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  • 1.
    Bertina, Laura
    et al.
    University of Latvia, Latvia.
    Krievans, Maris
    University of Latvia, Latvia.
    Burlakovs, Juris
    University of Latvia, Latvia.
    Lapinskis, Janis
    University of Latvia, Latvia.
    Coastal Development of Daugavgrîva Island, Located Near the Gulf of Riga2015In: Proceedings of the Latvian Academy of Sciences. Section B: Natural, Exact and Applied Sciences, ISSN 1407-009X, Vol. 69, no 6, p. 290-298Article in journal (Refereed)
    Abstract [en]

    Natural as well as anthropogenic processes impact greatly sensitive coastal areas all over the world. The spectrum of natural processes involved can be classified as meteorological, geologi-cal, marine, and lithodynamic. The Baltic Sea with its Gulf of Riga is an area in which combined sea erosion and accumulation processes, as well as alluvial processes, play significant roles in the coastal development. Major anthropogenic processes include impacts from ports and coastal protection structures, such as Riga Port hydraulic structures, fairway channels and coastal de-fence items. During summer also additional pressure of recreational activities has increased the effect on the coastal beach. Levelling data, historical cartographical material and beach sedimen-tary material granulometric analysis were used to describe natural and anthropogenic effects on development of the coastal beach of Daugavgrîva Island.

  • 2.
    Bhatnagar, Amit
    et al.
    Univ Eastern Finland, Finland.
    Kaczala, Fabio
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Univ Latvia, Latvia.
    Kriipsalu, Mait
    Estonian Univ Life Sci, Estonia.
    Hogland, Marika
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hunting for valuables from landfills and assessing their market opportunities: A case study with Kudjape landfill in Estonia2017In: Waste Management & Research, ISSN 0734-242X, E-ISSN 1096-3669, Vol. 35, no 6, p. 627-635Article in journal (Refereed)
    Abstract [en]

    Landfill mining is an alternative technology that merges the ideas of material recycling and sustainable waste management. This paper reports a case study to estimate the value of landfilled materials and their respective market opportunities, based on a full-scale landfill mining project in Estonia. During the project, a dump site (Kudjape, Estonia) was excavated with the main objectives of extracting soil-like final cover material with the function of methane degradation. In total, about 57,777 m(3) of waste was processed, particularly the uppermost 10-year layer of waste. Manual sorting was performed in four test pits to determine the detailed composition of wastes. 11,610 kg of waste was screened on site, resulting in fine (<40 mm) and coarse (>40 mm) fractions with the share of 54% and 46%, respectively. Some portion of the fine fraction was sieved further to obtain a very fine grained fraction of <10 mm and analyzed for its potential for metals recovery. The average chemical composition of the <10 mm soil-like fraction suggests that it offers opportunities for metal (Cr, Cu, Ni, Pb, and Zn) extraction and recovery. The findings from this study highlight the importance of implementing best available site-specific technologies for on-site separation up to 10 mm grain size, and the importance of developing and implementing innovative extraction methods for materials recovery from soil-like fractions.

  • 3.
    Burlakovs, Juris
    University of Latvia, Latvia.
    CONTAMINATION REMEDIATION WITH SOIL AMENDMENTS BY IMMOBILIZATION OF HEAVY METALS2015Doctoral thesis, monograph (Other academic)
  • 4.
    Burlakovs, Juris
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Ferrans, Laura
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Krumins, Janis
    University of Latvia, Latvia.
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Klavins, Maris
    University of Latvia, Latvia.
    Fluorescence Spectroscopy – Applied Tool for Organic Matter Analysis2019In: Goldschmidt Abstracts, 2019, 2019Conference paper (Refereed)
    Abstract [en]

    Large applied projects in various sub-fields of environmental science studied and analyzed properties of organic matter. The “Life-Sure” is as continuation of started work for cost effective bottom sediments treatment where organic matter play important role of sorption of urban contaminants; “CONTRA” - beach wrack studies for advanced value-based bioeconomy development. Another project on Jurassic clay is interesting in discourse on Pleistocene glaciers glaciodynamics. Material from field was tested by 3D fluorescence excitation-emission matrix (EEM) providing “fingerprints” for a single compound or a mixture of fluorescent components. Thus humic macromolecules might be well seen nevertheless structural units have variable effects on the wavelength as well as intensity of fluorescence. It decreases with increasing molecular size of the humic macromolecule. For applied environmental projects this is well non-destructive tool to quantify the decomposition degree of organic matter requiring negligible amount of sample. This important method is valid for both organic matter and humic substances analytics. Chemical nature of humic substances can be correlated to structural information, e.g., functional groups, poly-condensation, aromaticity, dynamic properties related to intermolecular interactions. Acquired data from EEM provided significant input for scientific knowledge and innovation along with other analytical tools. 

  • 5.
    Burlakovs, Juris
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Kriipsalu, Mait
    Estonian Univ Life Sci, Estonia.
    Vincevica-Gaile, Zane
    Univ Latvia, Latvia.
    Kaczala, Fabio
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Celma, Gunita
    Univ Latvia, Latvia.
    Ozola, Ruta
    Univ Latvia, Latvia.
    Rozina, Laine
    Univ Latvia, Latvia.
    Rudovica, Vita
    Univ Latvia, Latvia.
    Hogland, Marika
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Viksna, Arturs
    Univ Latvia, Latvia.
    Pehme, Kaur-Mikk
    Estonian Univ Life Sci, Estonia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Klavins, Maris
    Univ Latvia, Latvia.
    On the way to 'zero waste' management: Recovery potential of elements, including rare earth elements, from fine fraction of waste2018In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 186, p. 81-90Article in journal (Refereed)
    Abstract [en]

    Existing schemes of solid waste handling have been improved implementing advanced systems for recovery and reuse of various materials. Nowadays, the 'zero waste' concept is becoming more topical through the reduction of disposed waste. Recovery of metals, nutrients and other materials that can be returned to the material cycles still remain as a challenge for future. Landfill mining (LFM) is one of the approaches that can deal with former dumpsites, and derived materials may become important for circular economy within the concept 'beyond the zero waste'. Perspectives of material recovery can include recycling of critical industrial metals, including rare earth elements (REEs). The LFM projects performed in the Baltic Region along with a conventional source separation of iron-scrap, plastics etc. have shown that the potential of fine-grained fractions (including clay and colloidal matter) of excavated waste have considerably large amounts of potentially valuable metals and distinct REEs. In this paper analytical screening studies are discussed extending the understanding of element content in fine fraction of waste derived from excavated, separated and screened waste in a perspective of circular economy. Technological feasibility was evaluated by using modified sequential extraction technique where easy extractable amount of metals can be estimated. Results revealed that considerable concentrations of Mn (418-823 mg/kg), Ni (41-84 mg/kg), Co (10.7-19.3 mg/kg) and Cd (1.0-3.0 mg/kg) were detected in fine fraction (<10 mm) of waste sampled from Hogbytorp landfill, while Cr (49-518 mg/kg) and Pb (30-264 mg/kg) were found in fine fraction (<10 mm) of waste from Torma landfill revealing wide heterogeneity of tested samples. Waste should become a utilizable resource closing the loop of anthropogenic material cycle as the hidden potential of valuable materials in dumps is considerable. (C) 2018 Elsevier Ltd. All rights reserved.

  • 6.
    Burlakovs, Juris
    et al.
    University of Latvia, Latvia.
    Kaczala, Fabio
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Orupold, Kaja
    Estonian University of Life Sciences, Estonia.
    Bhatnagar, Amit
    University of Eastern Finland, Finland.
    Gaile-Vincevica, Zane
    University of Latvia, Latvia.
    Rudovica, Vita
    University of Latvia, Latvia.
    Kriipsalu, Mait
    Estonian University of Life Sciences, Estonia.
    Hogland, Marika
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Stapkevica, Mara
    University of Latvia, Latvia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Klavins, Maris
    University of Latvia, Latvia.
    Field-portable X-ray fluorescence spectrometry as rapid measurement tool for landfill mining operations: comparison of field data vs. laboratory analysis2015In: International Journal of Environmental Analytical Chemistry, ISSN 0306-7319, E-ISSN 1029-0397, Vol. 95, no 7, p. 609-617Article in journal (Refereed)
    Abstract [en]

    Landfill mining applied in reclamation at the territories of old dump sites and landfills is a known approach tended to global economic and environmental benefits as recovery of metals and energy is an important challenge. The aim of this study was to analyse the concentration of several metallic elements (Ca, Cu, Cr, Fe, K, Mn, Pb, Zn) in the fine fraction of waste derived in the landfill and to compare the results of measurements obtained by field-portable equipment with the data gained by advanced analytical tools. Atomic absorption spectrometry (AAS) and inductively coupled plasma mass spectrometry (ICP-MS) were used for the quantitative detection of metallic elements at the laboratory; whereas field-portable X-ray fluorescence spectrometry (FPXRF) was applied for rapid sample characterisation in the field (on-site). Wet digestion of samples (fine fraction of waste at landfill) was done prior analytical procedures at the laboratory conditions, but FPXRF analysis was performed using raw solid samples of waste fine fraction derived in the Kudjape Landfill in Estonia. Although the use of AAS and ICP-MS for the measurements of metals achieves more precise results, it was concluded that precision and accuracy of the measurements obtained by FPXRF is acceptable for fast approximate evaluation of quantities of metallic elements in fine fraction samples excavated from the waste at landfills. Precision and accuracy of the results provided by express method is acceptable for quick analysis or screening of the concentration of major and trace metallic elements in field projects; however, data correction can be applied by calculating moisture and organic matter content dependent on sample matrix as well as special attention must be paid on sample selection and homogenisation and number of analysed samples.

  • 7.
    Burlakovs, Juris
    et al.
    University of Latvia, Latvia.
    Kaczala, Fabio
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Vincevica-Gaile, Zane
    University of Latvia, Latvia.
    Rudovica, Vita
    University of Latvia, Latvia.
    Orupold, Kaja
    Estonian University of Life Sciences, Estonia.
    Stapkevica, Mara
    University of Latvia, Latvia.
    Bhatnagar, Amit
    University of Eastern Finland, Finland.
    Kriipsalu, Mait
    Estonian University of Life Sciences, Estonia.
    Hogland, Marika
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Klavins, Maris
    University of Latvia, Latvia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Mobility of Metals and Valorization of Sorted Fine Fraction of Waste After Landfill Excavation2016In: Waste and Biomass Valorization, ISSN 1877-2641, E-ISSN 1877-265X, Vol. 7, no 3, p. 593-602Article in journal (Refereed)
    Abstract [en]

    Reclamation of landfills and dumpsites requiresdetailed technical and economic evaluation of actual and potential pollution at the site, including detection of the main contaminants, their concentration, chemical stability and mobility in the environment. Contamination with metallic elements and metalloids is among the most important problems that limits recultivation of landfills and dumpsites and reuse of landfilled materials. This study was implemented at the Kudjape Municipal Landfill, located on Saaremaa Island in Estonia. The Kudjape Landfill is apartly closed landfill recultivated by covering it with a layer of a fine fraction of landfill material after the landfill mining operations. The fine fraction was derived at the site by sorting the landfill material (i.e., disposed waste) using mechanical screening, manual sorting and sieving. Obtained relatively homogeneous material, consisting of particles smaller than 10 mm, was defined as a fine fractionof waste. Samples from the fine fraction at different depth were collected and analyzed. Metal mobility was assessed after the sequential extraction. Results revealed that such elements as Zn, Mn, Mg are found in various fractions; Fe,Cd, Cr—mainly in residual fraction; Cu, Pb, Ni, Ba, Co and Rb mostly in fractions of residuals and reduced compounds,but they are presented in larger proportion of acid and water soluble fractions. Slight interconnection ofdetected parameters and sampling depth was revealed. Sequential extraction of elements in the fine fraction suggested the valorization of waste and confirmed that such landfill material can be successfully used as a landfill covering layer under the specific engineering circumstances.

  • 8.
    Burlakovs, Juris
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Krievans, Maris
    University of Latvia, Latvia.
    Seglins, V.
    Berzins, K.
    Stiebrins, O.
    Dobele impact structure in latvia: Review of archived reports for future2018In: International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM, International Multidisciplinary Scientific GeoConference & EXPO SGEM , 2018, no 1.1, p. 75-81Conference paper (Refereed)
    Abstract [en]

    Latvia is a State near Baltic Sea formerly included in Soviet Union that hardly classified all types of cartographical and geological information making it not available for scientific evaluation. Geological mapping data, deep boreholes with cores available from various depth up to crystalline basement (>1km), intersections and seismic data from 60-ties indicate the existence of an enigmatic structure similar to structural forms called astroblemes; it is located south of the town of Dobele in Latvia N56°35’ E23°15’. The structure at the beginning was suspected as kimberlitic pipe; however, gravimetric and magnetometer data did not approve these suspicions. The impact crater formed in between Late Triassic and Early Quaternary time; the age is not known precisely and one of versions of evolution of structure is possible explosion of a meteorite 2-5 km high above the land. Hydrogeological and geochemical data is contradictory to structural evidence therefore, a new survey including modern geophysical methods is highly recommended. The aim of this paper is reviewing of archived classified data from expedition reports of geological mapping events never published before and emphasize the need to recover hidden data about the formation of Dobele impact structure according to available research data and recommend future research approaches to shed light on unclear questions. The field geological mapping expedition was in charge during whole study of Dobele structure. The most devoted person to find the answers of development of the Dobele structure was Mr. Atis Murnieks, who left this world in summer 2017. © SGEM2018.

  • 9.
    Burlakovs, Juris
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. University of Latvia, Latvia.
    Kriipsalu, M.
    Estonian University of Life Sciences, Estonia.
    Arina, D.
    Latvia University of Agriculture, Latvia.
    Kaczala, Fabio
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Shmarin, S.
    Kyiv National University, Ukraine.
    Denafas, G.
    Kaunas University of Technology, Lithuania.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Former dump sites and the landfill mining perspectives in baltic countries and Sweden: The status2013In: SGEM2013 Conference Proceedings, 2013, p. 485-492Conference paper (Refereed)
    Abstract [en]

    Landfills are considered as places where the life cycle of products ends thus meaning that resources and materials, which before were valuables, become useless and are disposed forever in places away from the sight. Landfills that were not closed appropriately are of primary importance as the EU legislation demands closure of noncompliant landfills, re-cultivation followed by soil and groundwater remediation. Waste dumps in former times were created without any environmental planning and it causes problems. Planned actions to reduce and prevent impacts to the environment and get extracted valuables from dump sites are proposed in a new approach known as "landfill mining" (LFM). The number of dumpsites which are still not appropriately closed according to the EU Directives has diminished, but not completely. Landfills that are located close to the Baltic Sea and Black Seas could be good candidates for LFM. This research topic has had evolved in many aspects with the interest increase on material recovery, refuse derived fuels (RDF) production, greenhouse gas and leachate emission diminishing. Real-time applied LFM in last decade in Sweden has started and Estonian scientists and entrepreneurs took over the initiative - the project in Saaremaa Island is an example of closing the life cycle of dumpsites by following a more sustainable approach. The rise of raw material and energy costs promotes the process of LFM to be economically feasible, but this approach must be adjusted in regulations (permittingprohibiting schemes, environmental impact assessment, staff safety, monitoring).

  • 10.
    Burlakovs, Juris
    et al.
    University of Latvia, Latvia.
    Kriipsalu, Mait
    Estonian University of Life Sciences, Estonia.
    Arina, Dace
    Institute of Physical Energetics, Latvia.
    Kaczala, Fabio
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Ozola, Ruta
    University of Latvia, Latvia.
    Denafas, Gintaras
    Kaunas University of Technology, Lithuania.
    Hogland, Marika
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Mykhaylenko, Valeriy
    Taras Shevchenko National University of Kyiv, Ukraine.
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Orupold, Kaja
    Estonian University of Life Sciences, Estonia.
    Turkadze, Tsitsino
    A. Tsereteli State University, Georgia.
    Daugelaite, Valdone
    Kaunas University of Technology, Lithuania.
    Bucinskas, Algimantas
    Kaunas University of Technology, Lithuania.
    Rudovica, Vita
    University of Latvia, Latvia.
    Horttanainen, Mika
    Lappeenranta University of Technology, Finland.
    Klavins, Maris
    University of Latvia, Latvia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Metals and rare Earth’s elements in landfills: case studies2016In: 3rd Int. Symposium on Enhanced Landfill Mining, Lisboa, 8-10/2/2016, 2016Conference paper (Refereed)
    Abstract [en]

    Landfills are considered as places where the life cycle of products ends and materialshave been “disposed forever”. The landfill mining (LFM) approach can deal with formerdumpsites and this material may become important for circular economy perspectiveswithin the concept “Beyond the zero waste”. Potential material recovery should includeperspectives of recycling of critical industrial metals where rare Earth elements (REEs)are playing more and more important role. Real-time applied LFM projects in the BalticRegion have shown the potential of fine-grained fractions (including clay and colloidalmatter) of excavated waste as storage of considerably large amounts of valuable metalsand REEs. Analytical screening studies have extended a bit further the understanding offine fraction contents of excavated, separated and screened waste in a circular economyperspective. The Swedish Institute and Latvian Research Program “Res Prod” supportedthe research.

  • 11.
    Burlakovs, Juris
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Univ Latvia, Latvia.
    Kriipsalu, Mait
    Estonian Univ Life Sci, Estonia.
    Klavins, Maris
    Univ Latvia, Latvia.
    Bhatnagar, Amit
    Univ Eastern Finland, Finland.
    Vincevica-Gaile, Zane
    Univ Latvia, Latvia.
    Stenis, Jan
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Mykhaylenko, Valeriy
    Taras Shevchenko Natl Univ Kyiv, Ukraine.
    Denafas, Gintaras
    Fac Chem Technol, Lithuania.
    Turkadze, Tsitsino
    Akaki Tsereteli State Univ, Republic of Georgia.
    Hogland, Marika
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Rudovica, Vita
    Univ Latvia, Latvia.
    Kaczala, Fabio
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Rosendal, Rene Moller
    Danish Waste Solut ApS, Denmark.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Paradigms on landfill mining: From dump site scavenging to ecosystem services revitalization2017In: Resources, Conservation and Recycling, ISSN 0921-3449, E-ISSN 1879-0658, Vol. 123, p. 73-84Article in journal (Refereed)
    Abstract [en]

    For the next century to come, one of the biggest challenges is to provide the mankind with relevant and sufficient resources. Recovery of secondary resources plays a significant role. Industrial processes developed to regain minerals for commodity production in a circular economy become ever more important in the European Union and worldwide. Landfill mining (LFM) constitutes an important technological toolset of processes that regain resources and redistribute them with an accompanying reduction of hazardous influence of environmental contamination and other threats for human health hidden in former dump sites and landfills. This review paper is devoted to LFM problems, historical development and driving paradigms of LFM from 'classical hunting for valuables' to 'perspective in ecosystem revitalization'. The main goal is to provide a description of historical experience and link it to more advanced concept of a circular economy. The challenge is to adapt the existing knowledge to make decisions in accordance with both, economic feasibility and ecosystems revitalization aspects. (C) 2016 Elsevier B.V. All rights reserved.

  • 12.
    Burlakovs, Juris
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Kriipsalu, Mait
    Estonian Univ Life Sci, Estonia.
    Porshnov, Dmitry
    Univ Latvia, Latvia.
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Ozols, Viesturs
    Univ Latvia, Latvia.
    Pehme, Kaur-Mikk
    Estonian Univ Life Sci, Estonia.
    Rudovica, Vita
    Univ Latvia, Latvia.
    Grinfelde, Inga
    Latvia Univ Life Sci & Technol, Latvia.
    Pilecka, Jovita
    Latvia Univ Life Sci & Technol, Latvia.
    Vincevica-Gaile, Zane
    Univ Latvia, Latvia.
    Turkadze, Tsitsino
    Akaki Tsereteli State Univ, Georgia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Klavins, Maris
    Univ Latvia, Latvia.
    Gateway of Landfilled Plastic Waste Towards Circular Economy in Europe2019In: Separations, E-ISSN 2297-8739, Vol. 6, no 2, p. 1-8, article id 25Article in journal (Refereed)
    Abstract [en]

    For decades, significant work has been conducted regarding plastic waste by dealing with rejected materials in waste masses through their accumulation, sorting and recycling. Important political and technical challenges are involved, especially with respect to landfilled waste. Plastic is popular and, notwithstanding decrease policies, it will remain a material widely used in most economic sectors. However, questions of plastic waste recycling in the contemporary world cannot be solved without knowing the material, which can be achieved by careful sampling, analysis and quantification. Plastic is heterogeneous, but usually all plastic waste is jointly handled for recycling and incineration. Separation before processing waste through the analytical approach must be applied. Modern landfill mining and site clean-up projects in contemporary waste management systems require comprehensive material studies ranging from the macro-characterization of waste masses to a more detailed analysis of hazardous constituents and properties from an energy calorific standpoint-where, among other methods, thermogravimetric research coupled with life cycle assessment (LCA) and economic assessment is highly welcomed.

  • 13.
    Burlakovs, Juris
    et al.
    University of Latvia, Latvia.
    Ozola, Ruta
    University of Latvia, Latvia.
    Kostjukovs, Juris
    University of Latvia, Latvia.
    Klavins, Ivars
    University of Latvia, Latvia.
    Purmalis, Oskars
    University of Latvia, Latvia.
    Klavins, Maris
    University of Latvia, Latvia.
    Properties of the Jurassic clayey deposits of Southwestern Latvia and Northern Lithuania2015In: Materials Science and Applied Chemistry, ISSN 2255-8713, Vol. 32, no 1, p. 5-12Article in journal (Refereed)
    Abstract [en]

    Jurassic clay rich in organic matter from western Latvia is known already from early 19th century. Jurassic clays provide an interest because of high potential for innovative use due to its clay mineral composition jointly with organic material. Properties of the Jurassic clayey deposits were studied by using various physical and chemical methods. Material gained from field was tested by modern techniques such as UV-Vis, 3D fluorescence and FTIR — spectra, which show patterns of organic compounds in the clay material. AAS analyses characterized inorganic content. PXRD studies raised discussions about the origin of kaolin, illite and smectite and interactions among these clay minerals. Obtained results show that Jurassic clays with organic matter have future potential for possible use in cosmetic industry and as a sorbent material.

  • 14.
    Burlakovs, Juris
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Pehme, Kaur-Mikk
    Estonian Univ Life Sci, Estonia.
    Anne, O.
    Kriipsalu, Mait
    Estonian Univ Life Sci, Estonia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Remarks on novel case studies for integrated pollution prevention in the baltic sea region2018In: International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM, International Multidisciplinary Scientific GeoConference & EXPO SGEM , 2018, no 3.2, p. 1167-1174Conference paper (Refereed)
    Abstract [en]

    The Baltic Sea is suffering from extended surplus of phosphorus, nitrogen and other pollutants. It causes diminishing biodiversity and increased eutrophication (mainly due to nitrogen and phosphorous in various substances). The common effort in the region is environmental standpoint in sustainable circular economy. Oil pollutants, heavy metals, organic substances are being released to the Baltic Sea and consequences for maritime environment are serious. However, Baltic Sea Region is one of the most innovative regions in the world considering environmental technology development. The interregional potential is about to solve the above mentioned challenges there were developed the project “Reviving Baltic Resilience (RBR)”. By using prior experiences in other EU projects as well as continuously working and acquiring new data and knowledge, our aim is to test at proactive methods/technologies for preventing pollution reaching the maritime environment and entering biological chains. The paper focuses on three novel case studies: 1) pollution prevention through phytoremediation at landfill close to the sea; 2) studies on sludge deposits with focus on recovery potential; 3) prevention of release of pollutants from sediments in bays and lagoons. This project was supported by Interreg South Baltic program “Reviving Baltic Resilience” (RBR) and Swedish Institute “PECEC”. © SGEM 2018.

  • 15.
    Burlakovs, Juris
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Purmalis, Oskars
    Krievāns, Māris
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Ground-penetrating Radar (GPR) Geoenvironmental Screening in Lakes of Latvia - Challenges and Outcomes2016Conference paper (Refereed)
    Abstract [en]

    Geophysical studies in mapping and geoenvironmental applications for screening purposes are widely applied in Latvia. Ground-penetrating radar (GPR) as the one method from geophysical toolbox is a non-invasive and non-destructive way where pulsed electromagnetic signal is recorded as scattering from subsurface objects. Aim of two described screening studies was to analyse potential advantages of GPR use for mapping bottom sediments and topography in two lakes and pinpoint challenges to overcome during works. Both lakes are relatively deep and of sub-glacial origin that became lakes after the ice retreat from Baltic region. Characterization of bottom sediments as well as full core description of upper limnic layers for comparison with GPR signals were performed. Major results show that GPR, coring and laboratory analysis can be used simultaneously, however, ground penetration radar sometimes fails to recognize full picture needed for geoenvironmental application needs. Proper treatment of data nevertheless diminish the necessity of dense coring in lakes when budgets are strict.

  • 16.
    Denafas, G.
    et al.
    Kaunas University of Technology, Lithuania.
    Bučinskas, A
    Kaunas University of Technology, Lithuania.
    Burlakovs, Juris
    University of Latvia, Latvia.
    Dace, E
    Riga Technical University, Latvia.
    Bazienė, K
    Vilnius Gediminas Technical University, Lithuania.
    Horttanainen, M
    Lappeenranta University of Technology, Finland.
    Havukainen, J
    Lappeenranta University of Technology, Finland.
    Kaartinen, T
    VTT Technical Research Center of Finland, Finland.
    Rosendal, R
    Danish Waste Solutions, Denmark.
    Kriipsalu, M
    Estonian University of Life Sciences, Estonia.
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Investigation for landfill mining feasibilities in the Nordic and Baltic countries: overview of project results2016In: CYPRUS 2016 4th International Conference on Sustainable Solid Waste Management, At Limassol, Cyprus, 23–25 June 2016., 2016, p. 1-13Conference paper (Refereed)
  • 17.
    Hogland, Marika
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Arina, Dace
    Inst Phys Energet, Latvia.
    Kriipsalu, Mait
    Estonian Univ Life Sci, Estonia.
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Kaczala, Fabio
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    de Sa Salomao, Andre Luis
    Univ Estado Rio De Janeiro, Brazil.
    Orupold, Kaja
    Estonian Univ Life Sci, Estonia.
    Pehme, Kaur-Mikk
    Estonian Univ Life Sci, Estonia.
    Rudovica, Vita
    Univ Latvia, Latvia.
    Denafas, Gintaras
    Kaunas Technol Univ, Lithuania.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Vincevica-Gaile, Zane
    Univ Latvia, Latvia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Remarks on four novel landfill mining case studies in Estonia and Sweden2018In: Journal of Material Cycles and Waste Management, ISSN 1438-4957, E-ISSN 1611-8227, Vol. 20, no 2, p. 1355-1363Article in journal (Refereed)
    Abstract [en]

    In common sense, a landfill is a place where the life cycle of products ends. Landfill mining (LFM) mostly deals with former dumpsites and derived material may have a significant importance for the circular economy. Deliverables of recently applied LFM projects in Sweden and Estonia have revealed the potential and problems for material recovery. There are 75-100 thousand old landfills and dumps in the Baltic Sea Region, and they pose environmental risks to soil, water and air by pollution released from leachate and greenhouse gas emissions. Excavation of landfills is potential solution for solving these problems, and at the same time, there are perspectives to recover valuable lands and materials, save expenses for final coverage of the landfills and aftercare control. The research project "Closing the Life Cycle of Landfills-Landfill Mining in the Baltic Sea Region for Future" included investigation at four case studies in Estonia and Sweden: Kudjape, Torma, Hogbytorp and Vika landfills. Added value of this research project is characterization of waste fine fraction material, determination of concentration for most critical and rare earth elements. The main results showed that both, coarse and fine, fractions of waste might have certain opportunities of recovery.

  • 18.
    Hogland, Marika
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. University of Latvia, Latvia.
    Burlakovs, Juris
    University of Latvia, Latvia.
    Celma, Gunita
    University of Latvia, Latvia.
    Vincevica-Gaile, Zane
    University of Latvia, Latvia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. University of Latvia, Latvia.
    Preliminary analysis of elements in water supply sludge at Rönneholms Mosse fields, southern Sweden2018In: 18th International Multidisciplinary Scientific GeoConference (SGEM 2018): Conference Proceedings, Sofia: International Multidisciplinary Scientific GeoConference & EXPO SGEM , 2018, Vol. 18, no 1.4, p. 111-118Conference paper (Refereed)
    Abstract [en]

    Sydvatten AB operates the water plant Ringsjö Agency in Stehag, Southern Sweden, and the company has since the 1970s deposited waterworks sludge in the sludge landfill at Rönneholms Mosse (bog), Sjöholmen (WGS84 55°48'46.1"N 13°18'25.6"E). In order to handle the produced future waterworks sludge from Ringsjö there was carried out a trenching and stratigraphic study of Ringsjö Agency waterworks sludge. The aim of the project was to roughly determine the mass balance for Fe and Al for the basis of the results to determine potential extraction and recycling opportunities for the iron and/or aluminum hydroxides of water treatment sludge. In addition trace elements and rare earth elements (REE) were studied. Analysis of 10 cores were characterized by technogenic stratigraphy, texture and color, results of geochemical studies of processed sludge recovered possible recycling opportunities to implement circular economy principles in sludge management. The Interreg Baltic Sea Region within the scope of project “Interactive Water Management” (IWAMA) has supported this study.

  • 19.
    Hogland, William
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Grinfelde, Inga
    Latvia University of Life Science and Technologies, Latvia.
    Pilecka, Jovita
    Latvia University of Life Science and Technologies, Latvia.
    Rage, A.
    The role of triple helix in soil remediation projects2018In: International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM, International Multidisciplinary Scientific GeoConference & EXPO SGEM , 2018, no 5.4, p. 305-312Conference paper (Refereed)
    Abstract [en]

    The protection of natural resources such as soil, water, and biodiversity are of greatest challenges in European Union Bioeconomy Strategy. According to the European Commission there are more than 2.5 million potentially contaminated sites and more than 0.3 million contaminated sites in Europe. Soil remediation is important and gentle technologies such as phytoremediation are more and more appropriate regarding new environmentally friendly actions paradigms. The aim of this research is to show successful Triple helix approach in soil remediation context. Interaction and cooperation among Triple helix actors in remediation projects in Southern Sweden has become a success story. Remedial actions in Triple helix approach are linked to aerial planning, environmental interests of society, economic growth and give bonus track – educational and environmental awareness value. According to the Triple helix concept the result can be achieved only in intersection area of actors: university-industry-government. This research was carried out within support of Swedish Institute projects PHYTECO and PECEC, as well as financial support of Latvia University of Agriculture, Faculty of Environment and Civil Engeneering. © 2018, International Multidisciplinary Scientific Geoconference. All rights reserved.

  • 20.
    Hogland, William
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Sorting of Wastewaters for Urban and Rural Recycling and Reuse2019In: ECOBALTICA- XVI International Youth Scientific and Environmental Forum of Baltic Region Countries, 7-9 October Gdansk, Poland, 2019Conference paper (Other academic)
    Abstract [en]

    Drinking water of good quality, in enough quantity at right time start to be very scarce in the world. At the same time perfect drinking water is used to flushing toilet, cleansing of sewage pipes, washing of industry floors, firefighting, washing of cars and trucks etc. Also agriculture is suffering of lack of water for irrigation during dry periods and it is necessary to use drinking water or river/lake water of high quality to get rich harvest of good quality. In the future drinking water must just be used as food stuff and not wasted in the society. People must, since they are children, be trained to respect the drinking water and not waste a single drop. Also, storm water can be considered as a source of fresh water if it collected and recycled properly. Recycling/reuse of treated/reclaimed wastewater will help to mitigate part of the increasing water demands in the society and secondary water can be used in non-potable end paths such as agriculture, industry or even recharging water aquifers.  Reclaimed/technical or recycled water for non-potable uses such as flushing toilets, irrigation and other uses will be very important in modern society in the future.

  • 21.
    Hogland, William
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Mutafela, Richard
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    From Glass Dump to Phytoremediation Park2019In: ECOBALTICA- XVI International Youth Scientific and Environmental Forum of Baltic Region Countries, 7-9 October Gdansk, Poland, 2019Conference paper (Other academic)
    Abstract [en]

    Landfill mining was introduced in research inSweden for more than three and a half decades ago. During recent years, thefocus has been on the glass dumps in the Kingdom of Crystal in southeasternSweden. Mapping of the dumps, test excavations, sieving and sorting of theglass masses, characterization, laboratory extraction of the metals in theglass was performed as well as measurements of radioactivity done. The pollutedsoil underneath the removed glass masses was treated by remediation. In one ofplaces at the kingdom of Glass a phytoremediation/tourist park was establishedin Orrefors including a summer glasswork for tourist activities.

  • 22.
    Jani, Yahya
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Augustsson, Anna
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Marques, Marcia
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Characterization and toxicity of hazardous wastes from an old Swedish glasswork dumpManuscript (preprint) (Other academic)
    Abstract [en]

    More than 34 old glasswork sites in the southeastern part of Sweden pose a permanent threat to human and environmental health due to the presence of toxic metals in open dumps with glass waste. The possibility of leaching of metals from different fractions of the disposed waste needed to be assessed. In the present investigation, leachate from fine fraction (soil plus glass particles < 2 mm) was characterized as following: pH (7.3), TOC (< 2%), organic content (4.4%), moisture content (9.7), COD (163 mg/kg) and trace elements content, being the values in accordance to the Swedish guidelines for landfilling of inert materials. However, very high metals content was found in the fine fraction as well as in all colors of the glass fraction (≥ 2 mm), whose values were compatible to hazardous waste landfill class. Tests with Lepidium sativum growing in the fine fraction as substrate revealed chronic toxicity expressed as inhibition of root biomass growth in 11 out of 15 samples. Additionally, leachate from fine fractions posed acute toxicity to genetically modified E. coli (Toxi-Chromotest). This study highlights the importance of combining physicochemical characterization with toxicity tests for both solid waste and leachate obtained from different waste fractions for proper hazardousness assessment supporting decision making on remediation demands.

  • 23.
    Jani, Yahya
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Augustsson, Anna
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Marques, Marcia
    Rio de Janeiro State University, Brazil.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Physicochemical and toxicological characterization of hazardous wastes from an old glasswork dump at southeastern part of Sweden2019In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 237, p. 1-8, article id 124568Article in journal (Refereed)
    Abstract [en]

    More than 34 old glasswork sites in the southeastern part of Sweden pose a permanent threat to human and environmental health due to the presence of toxic trace elements in open dumps with glass waste. The possibility of leaching of trace elements from different fractions of the disposed waste needed to be assessed. In the present investigation, leachate from a mixture of soil and waste glass of particle sizes of less than 2mm (given the name fine fraction) was characterized by analyzing the pH (7.3), total organic content (TOC<2%), organic matter content (4.4%), moisture content (9.7%), chemical oxygen demand (COD, 163mg/kg) and trace elements content, being the values in accordance to the Swedish guidelines for landfilling of inert materials. However, very high trace elements content was found in the fine fraction as well as in all colors of waste glass, whose values were compatible to hazardous waste landfill class. Tests with Lepidium sativum growing in the fine fraction as substrate revealed chronic toxicity expressed as inhibition of root biomass growth in 11 out of 15 samples. Additionally, leachate from fine fractions posed acute toxicity to genetically modified E. coli (Toxi-Chromotest). This study highlights the importance of combining physicochemical characterization with toxicity tests for both solid waste and leachate obtained from different waste fractions for proper hazardousness assessment supporting decision making on remediation demands.

  • 24.
    Jani, Yahya
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Kriipsalu, Mait
    Estonian University of Life Sciences, Estonia.
    Pehme, Kaur-Mikk
    Estonian University of Life Sciences, Estonia.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hogland, Marika
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Denafas, Gintaras
    Kaunas University of Technology, Lithuania.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Composition of waste at an early EU-landfill of Torma in Estonia2017In: Iranica Journal of Energy and Environment / Iranian Journal of Energy and Environment, ISSN 2079-2115, Vol. 8, no 2, p. 113-117Article in journal (Refereed)
    Abstract [en]

    Landfills represent a continuous environmental threat due to the emission of different greenhouse gases, which are mainly responsible for the climate changes, and the contaminated leachate that affects the surface and ground water recipients. The circular economy approach appeared as a useful solution to reduce the depletion of the Earth’s natural resources and the environmental risk effects by considering all of the lost resources like wastes including the landfills as potential secondary resources. It is well known that characterizing the composition of landfill waste is an essential step in specifying the recycling methods. In the current research the waste composition at one of the first EU regulations-compliant sanitary landfills (the Torma landfill in Estonia) was studied. The results showed that the fine fraction (<20 mm) represented 53% of the total excavated waste materials while the waste to energy fraction (plastics, woods etc.) was the highest within the coarse fraction (>20 mm). The present work emphasized that mining landfills can be a good solution either for extracting primary raw materials like metals, as a source for recovering energy, or for acquiring landfill space.

  • 25.
    Jani, Yahya
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Mutafela, Richard
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Smålands glassworks: a review of the recently published studies2018In: LinnaeusEco-Tech 2018, 19–21 November 2018, Kalmar, Sweden: Abstract book / [ed] Yahya Jani, Jelena Lundström, Viveka Svensson, William Hogland, Kalmar: Linnaeus university , 2018, p. 151-Conference paper (Other academic)
    Abstract [en]

    The historical contamination of Smålands glass industry by hazardous concentrations of different trace elements (such as Pb, As, Zn, Cd and others) is a fact that has been approved by many researchers. These studies covered the situation of the glassworks contamination from different angles. However, the recommended solution by the Swedish Environmental Protection Agency is landfilling. Dumping these masses means, on the first hand, losing huge amounts of the Earth natural resources as wastes and, on the second hand, losing any future opportunity of recycling or reusing due to mixing these masses with other hazardous wastes generated by different sectors. In this paper, we are trying to review and highlight the results obtained by some of the already published studies in this field to identify the gap and challenges of recycling or reusing options.

  • 26.
    Jani, Yahya
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Mutafela, Richard
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Ferrans, Laura
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Ling, Gao
    Beihua University, People's Republic of China.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Phytoremediation as a promising method for the treatment of contaminated sediments2019In: Iranian Journal of Energy and Environment, ISSN 2079-2115, Vol. 10, no 1, p. 58-64Article in journal (Refereed)
    Abstract [en]

    Dredging activities are necessary to maintain the navigation depth of harbors and channels. Additionally,dredging can prevent the loss of water bodies. A large amount of extracted sediments is produced around theworld. Removed material is widely disposed at open seas or landfills. Much of the dredged material is pollutedand is classified as unsuitable for open-sea disposal. In Sweden, many dredging activities are taking placenowadays like that in Oskarshamn harbor, Inre harbor Norrköping municipality and Malmfjärden bay inKalmar. In this review, the potential of phytoremediation as a treatment method is discussed with focus onsuggested methods for reusing the treated sediments. Recycling or reusing of dredged and treated sedimentswill preserve Earth natural resources as well as reduce diffusion of contaminants to the environment.

  • 27.
    Jani, Yahya
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Pehme, Kaur-Mikk
    Estonian University of Life Sciences, Estonia.
    Bucinskas, A.
    Kaunas University of Technology, Lithuania.
    Kriipsalu, Mait
    Estonian University of Life Sciences, Estonia.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Speciation of Cu, Zn and Cr in Excavated Fine Fraction of Waste at two Landfills2018In: Iranica Journal of Energy and Environment (IJEE), ISSN 2079-2115, E-ISSN 2079-2123, Vol. 9, no 2, p. 86-90Article in journal (Refereed)
    Abstract [en]

    Mining landfills and open dumpsites is associated with (40-70% by mass) fine fraction of particle sizes less than 20 or 10 mm. Soil and trace elements of considerable concentrations typically dominate the composition of this fraction. In the present paper, a modified three steps sequential extraction procedure was used to fractionate Cu, Zn and Cr in the fine fraction of waste sampled from Högbytorp (Sweden) and Torma (Estonia) landfills. The results showed that the major concentrations of Cu (98.8 and 98.6 wt%) and Cr (98.5% and 98.4 wt %) in fines from Högbytorp and Torma landfills, respectively. These data were found associated to the residual fraction. Noticeable concentrations of Cu and Cr were also found associated within the water -soluble fraction, which could be regarded as a potential risk. The Zn displayed different behavior by distributing in all the sequential extraction fractions in the fine fractions from the two landfills. Specifying the metals content using this method is essential to explore the valorization as well as the potential environmental risks by these fines fractions.

  • 28.
    Kaczala, Fabio
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Orupold, Kaja
    Estonian Univ Life Sci, Estonia.
    Augustsson, Anna
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hogland, Marika
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Bhatnagar, Amit
    Univ Eastern Finland, Finland.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Fractionation of Pb and Cu in the fine fraction (< 10 mm) of waste excavated from a municipal landfill2017In: Waste Management & Research, ISSN 0734-242X, E-ISSN 1096-3669, Vol. 35, no 11, p. 1175-1182Article in journal (Refereed)
    Abstract [en]

    The fractionation of metals in the fine fraction (<10 mm) of excavated waste from an Estonian landfill was carried out to evaluate the metal (Pb and Cu) contents and their potential towards not only mobility but also possibilities of recovery/extraction. The fractionation followed the BCR (Community Bureau of Reference) sequential extraction, and the exchangeable (F1), reducible (F2), oxidizable (F3) and residual fractions were determined. The results showed that Pb was highly associated with the reducible (F2) and oxidizable (F3) fractions, suggesting the potential mobility of this metal mainly when in contact with oxygen, despite the low association with the exchangeable fraction (F1). Cu has also shown the potential for mobility when in contact with oxygen, since high associations with the oxidizable fraction (F3) were observed. On the other hand, the mobility of metals in excavated waste can be seen as beneficial considering the circular economy and recovery of such valuables back into the economy. To conclude, not only the total concentration of metals but also a better understanding of fractionation and in which form metals are bound is very important to bring information on how to manage the fine fraction from excavated waste both in terms of environmental impacts and also recovery of such valuables in the economy.

  • 29.
    Klavins, Maris
    et al.
    University of Latvia, Latvia.
    Burlakovs, Juris
    University of Latvia, Latvia.
    Ozola, Ruta
    University of Latvia, Latvia.
    Muter, Olga
    University of Latvia, Latvia.
    Composite clay sorbents for immobilisation of biomolecules and cells2015In: Journal of Biotechnology, ISSN 0168-1656, E-ISSN 1873-4863, Vol. 208, no supplement, p. S56-Article in journal (Refereed)
  • 30.
    Krauklis, Andrejs
    et al.
    Norwegian Univ Sci & Technol, Norway ; Univ Latvia, Latvia ; Riga Tech Univ, Latvia.
    Ozola, Ruta
    Univ Latvia, Latvia.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Univ Latvia, Latvia.
    Rugele, Kristine
    Riga Tech Univ, Latvia.
    Kirillov, Kirill
    Univ Latvia, Latvia.
    Trubaca-Boginska, Anna
    Univ Latvia, Latvia.
    Rubenis, Kristaps
    Riga Tech Univ, Latvia.
    Stepanova, Valentina
    Riga Tech Univ, Latvia.
    Klavins, Maris
    Univ Latvia, Latvia.
    FeOOH and Mn8O10Cl3 modified zeolites for As(V) removal in aqueous medium2017In: Journal of chemical technology and biotechnology (1986), ISSN 0268-2575, E-ISSN 1097-4660, Vol. 92, no 8, p. 1948-1960Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Arsenic in drinking water poses serious potential health risks in more than 30 countries with total affected population of around 100 million people. The present study is devoted to the development of innovative sorbents based on zeolite materials for As(V) sorption by modifying raw materials with iron oxyhydroxide and manganese oxychloride. Natural clinoptilolite and synthetic zeolite A were modified in order to obtain improved sorption of As(V). Sorption properties of newly developed sorbentswere studied. Zeolites containing natural clinoptilolite are chosen due to relatively lowcost and their broad use in industrial production as well as characteristic large surface area. RESULTS: Results obtained indicate that modification of zeolites with FeOOH and Mn8O10Cl3 significantly improves the As(V) sorption capacity of newly developed materials. As(V) sorption on FeOOH-modified aluminosilicates follows the Langmuir model, while on unmodified aluminosilicates it is described by the Freundlich model. As(V) sorption kinetics on both modified and unmodified materials most precisely can be described by Lagergren's pseudo-second-order kinetic model. Elevated As(V) concentration on the surface of Mn8O10Cl3 crystals and amorphous FeOOH indicates these compounds as responsible for sorption increase. CONCLUSION: Developed sorbents show improved performance in comparison with their unmodified counterparts, with a dramatic increase in As(V) sorption capacity up to 99.3 times in the case of FeOOH-modified calcium zeolite A. These materials have great potential for As(V) removal in aqueousmedium. (C) 2017 Society of Chemical Industry

  • 31.
    Mutafela, Richard
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Kaczala, Fabio
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Kihl, Anders
    Ragn Sells AB.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Characterization of Waste from Glassworks towards Resource Recovery - the Case of Madesjö Dumpsite2016In: Linnaeus Eco-Tech 2016, 21-23 November 2016, Kalmar, Sweden: Book of Abstracts, The 10th International Conference on Establishment of Cooperation between Companies and Institutions in the Nordic Countries, the Baltic Sea Region and the World. / [ed] Stina Alriksson, Jelena Lundström, William Hogland, Linnaeus University , 2016, p. 159-159Conference paper (Other academic)
    Abstract [en]

    The ‘Glasriket’ of Sweden’s Småland region is characterized by an array of landfillsand dumpsites of glass and other raw material wastes from old glassworks. Most ofthe dumpsites contain heavy metals with leaching capabilities to soil and groundwater. As these metals could be potential resources that could be recovered into theresource loop, the characterization of these wastes can provide necessary informationabout the resource recovery potential. The current investigation focuses on the firststages by quantifying the amounts of selected metals (Ba, Cr and Zn) in the glassdeposit at Madesjö dumpsite as a case. The dump was sampled at nine different pointsand two levels per point. The samples were subjected to X-ray Fluorescence scanning(XRF) and leaching tests with further analyses of metals using ICP. According to theinvestigation, the highest metal contents in the solid phase were observed in Zn(average of 4515 mg/kg) while the lowest were observed in Cr (average of 72 mg/kg).In the liquid phase, the average metal concentrations were observed to be 0.37 mg/kg,0.02 mg/kg and 0.23 mg/kg for Ba, Cr and Zn respectively. These, however, are not inreadily available form, and so further investigations need to be done in order to findcost-effective techniques for their extraction. On the other hand, further investigationsneed to be done to ascertain the leaching potential by altering such leachingparameters as contact time and liquid to solid ratio.

  • 32.
    Ozola, Ruta
    et al.
    Univ Latvia, Latvia.
    Klavins, Maris
    Univ Latvia, Latvia.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Clays, intercalated with organic substances for environmental technologies2018In: International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM, International Multidisciplinary Scientific GeoConference & EXPO SGEM , 2018, no 5.2, p. 197-202Conference paper (Refereed)
    Abstract [en]

    It is well documented that the interlayer space of clay minerals, notably smectites (e.g., montmorillonite), can be intercalated with wide variety of inorganic cations or organic cations through ion exchange reactions or using other physical and chemical means of interaction. When the modification of smectite is performed with organic cations, their properties change from hydrophilic to hydrophobic. Therefore, the resulting materials become efficient sorbents of organic contaminants in wastewater, e.g., as sorbing materials in landfill liners etc. Organophilic montmorillonite is prepared through exchange of smectite interlayer cations with long chain (C16-C18) alkylammonium-based ions (surfactants). Ionic liquids containing long chain cations (mostly imidazolium based) are another alternative to conventional nanoparticle modifiers. The review provides an overview of available clay based intercalated materials with various ionic liquids and surfactants, their effectiveness in removal of organic contaminants, and potential applications in environmentally friendly technologies. Present review is providing a platform for understanding the structure, properties and potential applications of organically modified clay materials, especially emphasizing water treatment. © SGEM2018.

  • 33.
    Ozola, Ruta
    et al.
    University of Latvia, Latvia.
    Krauklis, Andrejs
    Norwegian Univ Sci & Technol, Norway.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. University of Latvia, Latvia.
    Klavins, Marls
    University of Latvia, Latvia.
    Vincevica-Gaile, Zane
    University of Latvia, Latvia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Surfactant-Modified Clay Sorbents for the Removal of p-nitrophenol2019In: Clays and clay minerals, ISSN 0009-8604, E-ISSN 1552-8367, Vol. 67, no 2, p. 132-142Article in journal (Refereed)
    Abstract [en]

    Organic pollutants are widespread and a known problem for the environment. p-nitrophenol (PNP) is one such pollutant found in effluents from various industries involved with pesticides, pharmaceuticals, petrochemicals, plastic, paper, and other materials. The objective of this research was to prepare and test organically modified clays using four different surfactants and to evaluate the removal efficiency of PNP from aqueous solutions. Organically modified clays have attracted great interest due to their wide applications in industry and environmental protection as sorbents for organic pollutants. Two natural smectite-dominated clay types from outcrops in Latvia and Lithuania as well as industrially manufactured montmorillonite (Mt) clay were modified using different nonionic (4-methylmorpholine N-oxide (NMO) and dimethyldodecylamine N-oxide (DDAO)) and cationic (benzyltrimethyl ammonium chloride (BTMAC) and dodecyltrimethyl ammonium chloride (DTAC)) surfactants. Modified clay materials were characterized by Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and the Brunauer-Emmett-Teller method (BET) for surface area analysis. Sorption of PNP was investigated under various conditions, e.g. surfactant loading, initial PNP concentration, contact time, and pH. The novelty of the present study was to prepare innovative organo-sorbents based on manufactured as well as natural clay samples using cationic surfactants and nonconventional nonionic surfactants as modifiers. The sorption data combined with FTIR and XRD supplementary results suggests that nonionic organo-clay (Mt-DDAO_2) is the most effective sorbent and may serve as a low-toxicity immobilizer of pollutants such as phenols.

  • 34.
    Ozola, Ruta
    et al.
    University of Latvia, Latvia.
    Krauklis, Andrejs
    University of Latvia, Latvia;Riga Technical University, Latvia.
    Leitietis, Martins
    University of Latvia, Latvia.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. University of Latvia, Latvia.
    Vircava, Ilze
    University of Latvia, Latvia;University of Tartu, Estonia.
    Ansone-Bertina, Linda
    University of Latvia, Latvia.
    Bhatnagar, Amit
    University of Eastern Finland, Finland.
    Klavins, Maris
    University of Latvia, Latvia.
    FeOOH-modified clay sorbents for arsenic removal from aqueous solutions2019In: Environmental Technology & Innovation, ISSN 2352-1864, Vol. 13, p. 364-372Article in journal (Refereed)
    Abstract [en]

    The presence of arsenic (As) in natural and anthropogenic soils causes severe pollution of groundwater due to its harmful carcinogenic effects. The present work describes the research activities for searching of appropriate innovative sorbents based on clay material for As sorption using iron oxy-hydroxide modification. Natural and manufactured clay was chosen for comparison of modification efficiency in order to obtain best sorption results for As(V). The results of pilot testing were obtained and the sorption was studied as a function of initial arsenic concentration. Obtained results indicate that modification of clay with Fe compounds significantly improves the sorption capacity of a newly developed material used for sorption of As(V). Efficiency of sorption for Fe-modified clay is highly dependent on clay type as well as iron content in it. Further perspectives of investigations are recovered during this study in order to create more efficient and relatively cheap sorbents for As removal from aqueous solutions.

  • 35.
    Porshnov, Dmitry
    et al.
    University of Latvia, Latvia.
    Ozols, Viesturs
    University of Latvia, Latvia.
    Ansone-Bertina, Linda
    University of Latvia, Latvia.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. University of Latvia, Latvia.
    Klavins, Maris
    University of Latvia, Latvia.
    Thermal decomposition study of major refuse derived fuel components2018In: International Scientific Conference on Environmental and Climate Technologies, CONECT 2018 / [ed] Valtere, S, Elsevier, 2018, p. 48-53Conference paper (Refereed)
    Abstract [en]

    Refuse Derived Fuel (RDF) composed on biomass, paper, textiles, wood, synthetic polymers and other combustible materials is an alternative energy resource to implement Waste-to-Energy strategy. The aim of this study is to investigate the thermal decomposition characteristics of materials forming RDF by thermogravimetric analysis. Thermogravimetric (TG) analysis of RDF components demonstrates major differences in processes behind the thermal decomposition processes of waste components. Biomass decomposition can be divided into two distinct stages for wood, cotton, cotton wool and other biomass samples whereas three distinct stages can be distinguished for cardboard and paper samples. TG plots for synthetic polymers show two degradation steps for latex, vinyl and polystyrene sample, whereas one degradation step in nitrogen is characteristic for the rest of studied synthetic polymers. © 2018 The Authors. Published by Elsevier Ltd.

  • 36.
    Purmalis, Oskars
    et al.
    University of Latvia, Latvia ; Inst Environm Solut, Latvia.
    Alksnis, Aigars
    Inst Environm Solut, Latvia.
    Taskovs, Juris
    Inst Environm Solut, Latvia.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. University of Latvia, Latvia.
    Ground-penetrating radar (GPR) screening in shallow endure and pape lagoon lakes2016In: RESEARCH FOR RURAL DEVELOPMENT 2016, VOL. 1, 2016, p. 228-235Conference paper (Refereed)
    Abstract [en]

    Geophysical studies in mapping and screening applications are widely applied for archaeological, environmental, geological, hydrological and many other applications. Ground-penetrating radar (GPR) is one of methods from geophysical toolbox that is also called a ground-probing radar, subsurface radar surface-penetrating radar and 'georadar' or impulse radar it is a non-invasive and non-destructive technique. Pulsed electromagnetic signal is recording the reflected energy and scattering from subsurface objects. Studies were performed in former Littorina Sea lagoons that became lakes after the further Limnea Sea stage in the Baltic Sea established with comparatively lower absolute sea level that is close to present day situation. Characteriz ation of sediments as well as full sediment core description for comparison with GPRsignals were performed. Major results showthat GPR as non-destructive method in combination with geological coring followed by laboratory analysis of sediment properties can be successfully used to describe layering conditions, topography and depth of shallow lakes. Although there are some limitations regarding the electromagnetic (EM) noise and similar FM properties of analysed sediments, proper treatment of data gives complementary insight thus diminishing the necessity of dense coring network establishments in analysed areas of lakes. The aim of this screening study is to analyse potential advantages of GPR use for mapping sediments and topography of sandy bottom in shallow lagoon lakes as well as pinpoint problems during field and cameral works considering electromagnetic, geological and topographical disturbances.

  • 37.
    Purmalis, Oskars
    et al.
    Univ Latvia, Latvia.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Univ Latvia, Latvia.
    Reviving prospects for lake restoration: Investigating the geochemistry of lake Aluksne sediments2017In: Research for Rural Development 2017 / [ed] Treija, S Skujeniece, S, Latvia Univ Agriculture , 2017, Vol. 1, p. 145-152Conference paper (Refereed)
    Abstract [en]

    Lake sediments have a broad range of elementary and organic substance content. Bottom sediments collect decaying organic debris of aquatic plants and animals mixed by water drift with mineral constituents - deposited in the bottom of the lake in anoxic conditions. Lake Aluksne is situated in Northeast Latvia and is of glacial origin. Its water and bottom sediments chemical content depends on formation conditions - influenced also by anthropogenic activities. In order to determine environmental quality for restoration purposes and sediment recovery, geochemical research is needed. This paper aims to study bottom sediments - texture, ash part, organic compounds and metals to pinpoint necessary steps that are crucial for distinguishing environmental quality of the lake through geochemistry research. Bottom sediments contain sapropel with large admixture of organic compounds and microelements that may significantly influence biota and human health if concentration exceeds natural background levels. When bottom sediments are recovered, it may improve oxygene conditions in the lake, extracted sapropel can be used as a fertilizer, therapeutic agents, supplements for farm foods. Generally, sapropel is improving the structure of agricultural soils, increasing the cation exchange capacity and serving as binding material for complexes formation; thus diminishing ecotoxicological exposure threats of heavy metals, increasing yields and albumen and protein quantity in plants cultivation products. As these sediments can be used for soil fertilizing and crop production improvement in agriculture, mechanisms of ecotoxicological impact to various soil types and agricultural plant ecology should be researched.

  • 38.
    Purmalis, Oskars
    et al.
    University of Latvia, Latvia ; Inst Environm Solut, Latvia.
    Grinfelde, Inga
    Latvia University of Agricultur, Latvia.
    Valujeva, Kristine
    Latvia University of Agricultur, Latvia.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. University of Latvia, Latvia.
    The abandoned block-cut peat extraction field influence on the natural raised bog hydrological regime2016In: RESEARCH FOR RURAL DEVELOPMENT 2016, VOL. 1, 2016, p. 236-241Conference paper (Refereed)
    Abstract [en]

    Peat is still mined in many parts of the world for production of peat substrates and ener gy. Many peatlands were affected by drainage in the past also for forestry and aguicultural needs. Nowadays a raised attention to peatlands is focused, especially to drained peatlands due to their carbon reserves and their potential influence to the climate on the one hand, but on the other hand - due to raising awareness on protection of environment, habitats and biotopes. There are many examples on restoration activities in peatlands found worldwide, especially their water regime is the subject of regulation, which plays the major role to bring back original functions. In most cases in Latvia as the aim for protection and restoration of degraded peatlands was protection of EU biotopes and habitats. Of course, peatlands play an important role in emissions of the greenhouse gases CO2, CH4 and N2O, produced during mineralization of the drained peat organic matter. In literature, we can find only few cases where hydrological regimes are described for natural raised as well as restored block-cut peat extraction fields. This research analyses block-cut peat extraction field water level fluctuation influence on naturally raised bog hydrological regimes. Hourly data is analysed for six groundwater monitoring wells as well as for determination needs of water level fluctuations in excavated peat quarry as a response to precipitation.

  • 39.
    Valujeva, Kristine
    et al.
    Latvia University of Life Science and Technologies, Latvia.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Grinfelde, Inga
    Latvia University of Life Science and Technologies, Latvia.
    Pilecka, Jovita
    Latvia University of Life Science and Technologies, Latvia.
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Phytoremediation as tool for prevention of contaminant flow to hydrological systems2018In: Research for Rural Development 2018: Engineering, landscape architecture, Jelgava: Latvia University of Agriculture , 2018, Vol. 1, p. 188-194Conference paper (Refereed)
    Abstract [en]

    Management of remediation projects in contaminated sites has become an increasingly global challenge and nowadays takes intensive international environmentally sound cooperation intended to relieve negative consequences of landscape pollution. This paper aims to deal with the phytoremediation approach for protection of environment and preventing the streaming of contaminant flows to hydrological systems. Phytoremediation is a cost-effective environmentally friendly clean-up technology, which uses plants and microorganisms in rhizosphere for soil and groundwater treatment. Phytoremediation is enhancing degradation of organic pollutants and improving stabilization of inorganic contaminants where plants can be used to treat soil and water polluted with hydrocarbons, chlorinated substances, pesticides, metals, explosives, radionuclides as well as to reduce the excess of nutrients. Selection of species for this type of treatment processes is based on evapotranspiration potential and ability to bioaccumulate contaminants. The project entitled “Phytoremediation Park for treatment and recreation at glassworks contaminated sites“ (PHYTECO) aimed at cross-sector international partnership. The challenge of project was to develop remediation strategy where negative consequences from centuries long anthropogenic influence are turned to be something positive - development of the recreation park from the glass dump. Here designers, scientists, local volunteers, international students would join ideas and common work for the boost of innovation and sustainable thinking. New “Knowledge in Inter Baltic Partnership Exchange for Future Regional Circular Economy Cooperation“ (PECEC) project is sequential continuation.

  • 40.
    Vincevica-Gaile, Zane
    et al.
    University of Latvia, Latvia.
    Stapkevica, Mara
    University of Latvia, Latvia.
    Stankevica, Karina
    University of Latvia, Latvia.
    Burlakovs, Juris
    University of Latvia, Latvia.
    Testing sapropel (gyttja) as soil amendment: assessment of plant germination and early seedling development2015In: Research for Rural Development 2015: Annual 21st International Scientific Conference Proceedings / [ed] Santa Treija & Signe Skujeniece, Latvia University of Agriculture , 2015, Vol. 1, p. 88-94Conference paper (Refereed)
    Abstract [en]

    Sapropel or gyttja are the terms that relate to specific water body sediments containing a high level of organic matter formed from the remains of water biota mixed with mineral components. One of the most promising utilisation ways of sapropel is agriculture and forestry where this natural material can be used as soil amendment to enrich soil fertility, neutralise acidity, improve water capacity and reduce phytoavailablity of excess of metallic elements. The aim of this study was to perform plant germination and early seedling tests using various sapropel samples and to reveal response of plant development depending on the type of sapropel to be used as soil amendment. Pure natural sapropel and sapropel/sand substrate of such types as peaty, organic-sandy, cyanobacteria, green algae and carbonatic sapropel, derived from four lakes of eastern Latvia, were tested. Seeds of cucumber Cucumis sativus and tomato Solanum lycopersicum as dicotyledons and perennial rye-grass Lolium perenne as monocotyledon were chosen for the experiment. Seed germination and early seedling tests were performed in PHYTOTESTKIT plates. Seeds were germinated in thermostat at a temperature of 26 °C for 7 days but early seedling development was achieved after 23-30 days (depending on plant species) under daylight conditions at a temperature of 20 °C. Developed radicles and hypocotyls were measured, shoots and roots were weighed. The obtained results showed a distinctive effect of applied sapropel type on the development of plants depending on species and substrate - substrate containing pure natural sapropel is effective for cucumber and perennial rye-grass, but not for tomato.

  • 41.
    Zheng, Hennisa
    et al.
    Univ Gadjah Mada, Indonesia.
    Risa, Novia
    Univ Gadjah Mada, Indonesia.
    Juliany,
    Univ Gadjah Mada, Indonesia.
    Kelvin, Shawn
    Univ Gadjah Mada, Indonesia.
    Kalati, Tyas Delilla
    Univ Gadjah Mada, Indonesia.
    Lukitaningsih, Raden Rara Endang
    Univ Gadjah Mada, Indonesia.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Sembur Karo: Karo's Traditional Medicine as Burns Injury Alternative Treatment with Rattus norvegicus as Model2017In: 4th International Conference on Biological Science (2015) / [ed] Nuringtyas, TR Setyobudi, RH Burlakovs, J Mel, M Adinurani, PG VincevicaGaile, Z, 2017, p. 111-117Conference paper (Refereed)
    Abstract [en]

    Burns injury can be caused by flame, heat, chemical and electricity and it remains as one of the most serious problems in the medical world. Burns injury can be treated with traditional medicine. One of them is Sembur Karo. The objective of this research was to investigate the Sembur Karo potency for burns injury treatment. Sembur Karo obtained from North Sumatera was identified its plant composition and analyzed for bioactive compounds; flavonoid, steroid, and tannin. Twenty five rats (Rattus norvegicus) were used. The rats were divided into five groups of five. The first group used as a control without treatment, the second group are sprayed with Sembur Karo, while the third and the fourth groups were applied with Sembur Karo added with water and human saliva respectively. The last group were treated with Bioplacentone. All treatments were done once a day for 3 wk. Each week, one rat from all group were sacrificed with skins were taken for histology specimen. From this research, it was concluded that bioactive compounds in Sembur Karo were isoquersetin, sterol, and condensed tannin. The skin histology showed that the group which sprayed with Sembur Karo had the most effective effect among all groups.

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