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  • 1.
    Abarca-Guerrero, Lilliana
    et al.
    Univ Tecnol Eindhoven, Netherlands.
    Maas, Ger
    Univ Tecnol Eindhoven, Netherlands.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Desafíos en la gestión de residuos sólidos para las ciudades de países en desarrollo [Solid waste management challenges for cities in developing countries]2015In: Tecnología en Marcha, ISSN 0379-3982, Vol. 28, no 2, p. 141-168Article in journal (Refereed)
    Abstract [en]

    Solid waste management is a challenge for the cities' authorities in developing countries mainly due to the increasing generation of waste, the burden posed on the municipal budget as a result of the high costs associated to its management, the lack of understanding over a diversity of factors that affect the different stages of waste management and linkages necessary to enable the entire handling system functioning. An analysis of literature on the work done and reported mainly in publications from 2005 to 2011, related to waste management in developing countries, showed that few articles give quantitative information. The analysis was conducted in two of the major scientific journals, Waste Management Journal and Waste Management and Research. The objective of this research was to determine the stakeholders' action/behavior that have a role in the waste management process and to analyze influential factors on the system, in more than thirty urban areas in 22 developing countries in 4 continents. A combination of methods was used in this study in order to assess the stakeholders and the factors influencing the performance of waste management in the cities. Data was collected from scientific literature, existing data bases, observations made during visits to urban areas, structured interviews with relevant professionals, exercises provided to participants in workshops and a questionnaire applied to stakeholders. Descriptive and inferential statistic methods were used to draw conclusions. The outcomes of the research are a comprehensive list of stakeholders that are relevant in the waste management systems and a set of factors that reveal the most important causes for the systems' failure. The information provided is very useful when planning, changing or implementing waste management systems in cities.

  • 2.
    Alriksson, Stina
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Hakuli, M
    Helo, P
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Kekäle, T
    Kohtamäki, M
    MARQUES, MARCIA
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Paajaste, K
    Peltoniemi, J
    Peura, Pekka
    Key Areas of Environmental Entrepreneurships and Relevant Legal, Finacial and Organizational Framework2006 (ed. Alriksson, S., Hakuli, M., Helo, P., Hogland, W., Kekäle, T., Kohtamäki, M, Marques, M., Paajaste, K., Peltoniemi, J., and Peura, P., (eds))Book (Other academic)
  • 3. Ansbjer, J
    et al.
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Tamaddon, F
    Storage of waste-fuels with bailing technique1995In: ISWA Times, no 3Article in journal (Refereed)
  • 4. Bengtsson, L
    et al.
    Bendz, D
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Rosquist, H
    Åkesson, M
    Water balance for landfills of different age1994In: Journal of Hydrology, ISSN 0022-1694, E-ISSN 1879-2707, Vol. 158, no 3-4, p. 203-217Article in journal (Refereed)
    Abstract [en]

    Water-related processes in landfills are discussed with emphasis on internal processes such as field capacity, moisture variation in time and space, and macropore flow. Runoff production and evaporation from landfills in Sweden of different age are investigated. It is clarified in what ways and for how long a closed municipal landfill differs from an ordinary land area from a hydrological point of view. 

  • 5. Berg, Jørn. E
    et al.
    GLT-avfall, GLT-avfall
    Marika, Hogland
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Hvorfor grave ut "gammel moro"?2009In: Kretsløpet - Tidsskrift for avfall og gjenvinning, Vol. dec, no 6, p. 25-27Article in journal (Other (popular science, discussion, etc.))
  • 6. Berndtsson, R.
    et al.
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Dator-modellering för bestämning av bräddning - Ett nytt Hjälpmedel vid Upprättandet av Saneringsplaner1985In: Vann, ISSN 0042-2592, Vol. 20, no 2, p. 107-112Article in journal (Refereed)
  • 7. Berndtsson, R.
    et al.
    Hogland, William
    Lunds Universitet.
    Quantitative and Qualitative Characteristics of Urban Discharge to Small River Basins in the South West of Sweden1983In: Nordic Hydrology, Vol. 14, no 3, p. 155-166Article in journal (Refereed)
  • 8. Berndtsson, R
    et al.
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Larsson, M
    Mathematical modelling of combined sewer overflow quality, urban drainage modelling1986In: Proceedings of the International Symposium on Comparison of Urban Drainage Models with Real Catchment Data, UDM'86, Dubrovnik, Yugoslavia: Pergamon Press , 1986, p. 305-315Chapter in book (Other academic)
  • 9. Berndtsson, R
    et al.
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Larsson, M
    Niemczynowicz, J
    Aspects of computer modelling techniques for a semi-arid small catchment in Tunisia, Urban Drainage Modeling1986In: Proceedings of the International Symposium on Comparison of Urban Drainage Models with Real Catchment Data, UDM'86, Dubrovnik, Yugoslavia: Pergamon Press , 1986, p. 285-291Chapter in book (Other academic)
  • 10. Bernstone, C.
    et al.
    Dahlin, T.
    Ohlsson, T.
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    DC Rresistivity Mapping of Internal Landfill Structures: Two pre-excavation surveys2000In: Environmental Geology, Vol. 39(3-4), p. 360-371Article in journal (Refereed)
  • 11.
    Bhatnagar, Amit
    et al.
    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.
    Marques, Marcia
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Univ Estado Rio De Janeiro, Dept Sanit & Environm Engn, UERJ, Rio De Janeiro, Brazil.
    Sillanpaa, Mika
    Lappeenranta Univ Technol, Fac Technol, FI-50100 Mikkeli, Finland.
    An overview of the modification methods of activated carbon for its water treatment applications2013In: Chemical Engineering Journal, ISSN 1385-8947, E-ISSN 1873-3212, Vol. 219, p. 499-511Article, review/survey (Refereed)
    Abstract [en]

    Activated carbon has been recognized as one of the oldest and widely used adsorbent for the water and wastewater treatment for removing organic and inorganic pollutants. The application of activated carbon in adsorption process is mainly depends on the surface chemistry and pore structure of porous carbons. The method of activation and the nature of precursor used greatly influences surface functional groups and pore structure of the activated carbon. Therefore, the main focus of researchers is to develop or modifies the activation/treatment techniques in an optimal manner using appropriate precursors for specific pollutants. In recent years, emphasis is given to prepare the surface modified carbons using different procedures to enhance the potential of activated carbon for specific contaminants. Various methods such as, acid treatment, base treatment, impregnation treatment, ozone treatment, surfactant treatment, plasma treatment and microwave treatment have been studied to develop surface modified activated carbons. In this paper, these modification methods have been reviewed and the potential of surface modified activated carbons towards water treatment has been discussed. This review article is aimed at providing precise information on efforts made by various researchers in the field of surface modification of activated carbon for water pollution control. (C) 2012 Elsevier B.V. All rights reserved.

  • 12.
    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.

  • 13.
    Bhatnagar, Amit
    et al.
    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.
    Hogland, William
    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. Univ Estado Rio De Janeiro, Dept Sanit & Environm Engn, UERJ, Rio De Janeiro, Brazil.
    Paraskeva, Christakis A.
    Papadakis, Vagelis G.
    Sillanpaa, Mika
    Valorization of solid waste products from olive oil industry as potential adsorbents for water pollution control-a review2014In: Environmental Science and Pollution Research, ISSN 0944-1344, E-ISSN 1614-7499, Vol. 21, no 1, p. 268-298Article, review/survey (Refereed)
    Abstract [en]

    The global olive oil production for 2010 is estimated to be 2,881,500 metric tons. The European Union countries produce 78.5 % of the total olive oil, which stands for an average production of 2,136,000 tons. The worldwide consumption of olive oil increased of 78 % between 1990 and 2010. The increase in olive oil production implies a proportional increase in olive mill wastes. As a consequence of such increasing trend, olive mills are facing severe environmental problems due to lack of feasible and/or cost-effective solutions to olive-mill waste management. Therefore, immediate attention is required to find a proper way of management to deal with olive mill waste materials in order to minimize environmental pollution and associated health risks. One of the interesting uses of solid wastes generated from olive mills is to convert them as inexpensive adsorbents for water pollution control. In this review paper, an extensive list of adsorbents (prepared by utilizing different types of olive mill solid waste materials) from vast literature has been compiled, and their adsorption capacities for various aquatic pollutants removal are presented. Different physicochemical methods that have been used to convert olive mill solid wastes into efficient adsorbents have also been discussed. Characterization of olive-based adsorbents and adsorption mechanisms of various aquatic pollutants on these developed olive-based adsorbents have also been discussed in detail. Conclusions have been drawn from the literature reviewed, and suggestions for future research are proposed.

  • 14.
    Burlakovs, J.
    et al.
    University of Latvia, Latvia.
    Vincevica-Gaile, Z.
    University of Latvia, Latvia.
    Bisters, V.
    University of Latvia, Latvia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Kriipsalu, M.
    Estonian University of Life Sciences, Estonia.
    Zekker, I.
    Tartu University, Estonia.
    Setyobudi, R. H.
    University of Muhammadiyah Malang, Indonesia.
    Jani, Y.
    Malmö University, Sweden.
    Anne, O.
    Klaipeda University, Lithuania.
    Application of anaerobic digestion for biogas and methane production from fresh beach-cast biomass2022In: 3rd EAGE Global Energy Transition, GET 2022, European Association of Geoscientists and Engineers, EAGE , 2022, p. 61-65Conference paper (Refereed)
    Abstract [en]

    In this research, biogas production potential from beach wrack collected in Riga Gulf (Ragaciems, Jaunķemeri, Bigauņciems) and in coastline of Sweden (Kalmar) was studied using an anaerobic digestion method. Selected beach wrack masses laying ashore and containing macroalgal biomass of common macroalgae types specific to the Baltic Sea were mixed for consolidated samples. Anoxic fermentation of untreated beach wrack was carried out in 16 bioreactors applying a single filling mode at 38 °C. The study revealed that by utilizing beach wrack accumulated ashore as a feedstock for anaerobic digestion methane can be utilized if pretreatment and conditioning of the samples are performed. The study was continued for selected brown algae containing biomass tested with three dewatering pretreatment methods: a) keeping in tap water for 24 hours; b) washing with running fresh water for one hour, and c) drying to relatively constant weight. The resulting methane outcome was compared with the data corresponding to raw brown algae. The study confirmed that washing of macroalgal biomass applied as pretreatment prior to anaerobic fermentation avoids inhibition of salts and promotes biomethane production.

  • 15.
    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. 

  • 16.
    Burlakovs, Juris
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Estonia university of life sciences, Estonia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Linnaeus University, Linnaeus Knowledge Environments, Water.
    Vincevica-Gaile, Zane
    University of Latvia, Latvia.
    Kriipsalu, Mait
    Estonia university of life sciences, Estonia;University of Latvia, Latvia.
    Klavins, Maris
    University of Latvia, Latvia.
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Setyobudi, Roy Hendroko
    university of Muhammadiyah Malang, Indonesia.
    Bikše, Jānis
    University of Latvia, Latvia.
    Rud, Vasiliy
    Russian Agricultural Academy, Russia.
    Tamm, Toomas
    Estonia university of life sciences, Estonia.
    Environmental Quality of Groundwater in Contaminated Areas—Challenges in Eastern Baltic Region2020In: Water Resources Quality and Management in Baltic Sea Countries / [ed] Abdelazim M. Negm, Martina Zelenáková & Katarzyna Kubiak-Wójcicka, Switzerland: Springer, 2020, p. 59-84Chapter in book (Refereed)
    Abstract [en]

    The lack of water in the future will force society to find more sophisticated solutions for treatment and improvement of groundwater wherever it comes from. Contamination of soil and groundwater is a legacy of modern society, prevention of contaminants spread and secondary water reuse options shall be considered. The aim of the book chapter is to give oversight view on problems and challenges linked to groundwater quality in Eastern Baltic region whilst through case studies explaining the practical problems with groundwater monitoring, remediation and overall environmental quality analysis. The reader will get introduced with case studies in industry levels as credibility of scientific fundamentals is higher when practical solutions are shown. Eastern Baltic countries experience cover contamination problems that are mainly of historic origin due to former Soviet military and industrial policy implementation through decades. Short summaries for each case study are given and main conclusions provided in form of recommendations at the very end of the chapter.

  • 17.
    Burlakovs, Juris
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Geo IT Ltd, Latvia.
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Kriipsalu, M.
    Estonian Univ Life Sci, Estonia.
    Grinfelde, I.
    Latvia Univ Life Sci & Technol, Latvia.
    Pilecka, J.
    Latvia Univ Life Sci & Technol, Latvia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Linnaeus University, Linnaeus Knowledge Environments, Water.
    Implementation of new concepts in waste management in tourist metropolitan areas2020In: 2019 9TH INTERNATIONAL CONFERENCE ON ENVIRONMENT SCIENCE AND ENGINEERING (ICESE 2019) / [ed] Sevilla, NPM Quanrud, D, IOP Publishing , 2020, p. 1-10, article id 012017Conference paper (Refereed)
    Abstract [en]

    The urban waste in tourist cities needs comprehensive global research efforts and proceeded action as for metropolitan areas huge impact and load on waste management is generated. Waste management and resource conservation strategies are prepared in state-of-the-art level however implementation and future improvement of the current situation is crucial. Some examples in waste prevention and management for better tourism, waste and resource management are provided in the paper as outcomes from Horizon2020 project "Urban Strategies for Waste Management in Tourist Cities". The policy and tools based on information gathered by scientists, municipal and NGOs experience (e.g. separation of bio-waste in catering industries, "sin-wastes" as from the bars, nightclubs and smoker places, reuse of unnecessary items that can serve for others and many more) are described. In addition, regulatory instruments (e.g. ban of plastic bags, reduction of allowed bio-waste in landfilling), economic instruments (taxes) and voluntary agreements (e.g. deposit systems; cleaning actions by volunteers) might be used to implement and elaborate the situation within environmental management and prevention practices in tourist metropolitan cities. Food waste prevention, beach and littoral management, special practices for festival waste and large amount specific waste generating facilities (e.g., entertainment industry, cruises etc.) are of high importance. The future outlook may be concentrated on digitalizing of waste flows and using the "big data" concept for better and smarter waste management.

  • 18.
    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.

  • 19.
    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.

  • 20.
    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.

  • 21.
    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).

  • 22.
    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.

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  • 23.
    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.

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  • 24.
    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.

  • 25.
    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.

  • 26.
    Carius, Staffan
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Jilken, Leif
    University of Kalmar, Department of Technology.
    Mathiasson, Anders
    Andersson, Per-Åke
    A Hidden Waste Material Resource: Disposed Thermoplastics1999In: Sardinia´99, The 7th International Waste Management and Landfill Symposium Vol V, Sardinia, Italy, 1999Conference paper (Refereed)
  • 27.
    Carlsson, Bo
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Johansson, Magnus
    Robertson, Kerstin
    Sundqvist, J-O
    Integrerade avfallsflöden och omvänd logistik som drivande variabler för innovations system i regionalt perspektiv för minskad miljöpåverkan och resursanvändning2002Report (Other academic)
  • 28.
    Carlsson, Bo
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Taylor, D
    MARQUES, MARCIA
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Design for Functional Units for Products by a Total Cost Accounting Approach2005Report (Other academic)
  • 29.
    Carlsson, Bo
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Taylor, D
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    MARQUES, MARCIA
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Design of Functional Units for Products by a Total Cost Accounting Approach2007Report (Other academic)
  • 30.
    Chang, Cheng
    et al.
    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 development in Sweden2022In: IOP Conference Series: Earth and Environmental Science, Volume 1096, Institute of Physics (IOP), 2022, Vol. 1096, no 1, article id 012001Conference paper (Refereed)
    Abstract [en]

    The contaminated air, water and soil have been major environmental issues during the last decades in Sweden. The phytoremediation technologies with ecological and economic benefits may help to alleviate those problems, especially related to heavy metal and organic pollutants. There is paucity of literatures on comprehensive understanding of phytoremediation technology development in Sweden. The Environmental Science and Engineering Group (ESEG) at Linnaeus University has been working on the relevant topics for decades and achieved some important findings. This study aimed at providing a systematic insight on the phytoremediation development in Sweden through literature reviews as well as summarizing the doctoral theses presented by ESEG. Herein suggestions and recommendations for phytoremediation development are given, especially those projects and research in Sweden and other countries with similar climate situation, which can benefit the works for site managers and engineers as well as ecologists and biochemists. The study presents useful findings: 1) The majority of phytoremediation research in Sweden is focused on wetlands. Some are working on soil remediation, and very few on air purification. Submerged plant species in wetlands have been shown to be more effective at removing heavy metals than free-floating and terrestrial plants. Willow is the most popular species used in soil remediation, and there are many different clones. There are some other potential plants for phytoremediation, including Poplar, Silver Birch, Alfalfa, Spinach, Fireweed, Reed Canary grass, Scots pine, Rapeseed, etc. 2) Composting, bacteria, and iodides are examples of additions that can help improve phytoremediation efficiency. 3) Both biomass yields and contaminants accumulation concentration in plant must be considered when evaluating phytoremediation efficiency. 4) The efficacy of the phytoremediation function will be influenced by factors such as plant selection, climate situation, additions of substrate, soil properties, etc. Furthermore, the concentration of contaminants varies between plants as well as between different parts of the plant. 5) Management and maintenance are essential for a successful phytoremediation operation. It is critical to protect plants against disease, fungi, insects, pests and so on. © Published under licence by IOP Publishing Ltd.

  • 31.
    Chubarenko, B.
    et al.
    Russian Acad Sci, Russia.
    Woelfel, J.
    Univ Rostock, Germany.
    Hofmann, J.
    EUCC Coastal Union Germany, Germany.
    Aldag, S.
    Hanseat Umwelt CAM GmbH, Germany.
    Beldowski, J.
    Polish Acad Sci, Poland.
    Burlakovs, Juris
    Estonian Univ Life Sci, Estonia.
    Garrels, T.
    KS VTCtech GmbH, Germany.
    Gorbunova, J.
    Russian Acad Sci, Russia.
    Guizani, S.
    Municipal Koege, Denmark.
    Kupczyk, A.
    Gdansk Univ Technol, Poland.
    Kotwicki, L.
    Polish Acad Sci, Poland.
    Domnin, D.
    Russian Acad Sci, Russia.
    Gajewska, M.
    Gdansk Univ Technol, Poland.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Kolecka, K.
    Gdansk Univ Technol, Poland.
    Nielsen, J.
    Municipal Koege, Denmark.
    Schubert, H.
    Univ Rostock, Germany.
    Converting beach wrack into a resource as a challenge for the Baltic Sea (an overview)2021In: Ocean and Coastal Management, ISSN 0964-5691, E-ISSN 1873-524X, Vol. 200, p. 1-15, article id 105413Article in journal (Refereed)
    Abstract [en]

    The paper distinguishes beach wrack, the marine generated organic part of beach cast, as a separate management object and discusses research questions related to its management and economically viable use. Based on experiences from the Baltic Sea and existing practices from countries with different management systems clear distinction between the management of natural and anthropogenic components of cast material is seen as an essential prerequisite for developing sustainable product chains that allow beach wrack to be used as a resource of commercial value. Presenting and discussing examples from Denmark (Koge Municipality), Germany (Kuhlungsborn, Rugen and Poel Island), Poland (Gulf of Gdansk), Russia (Curonian and Vistula spits) and Sweden (Kalmar municipality and Oland), social, ecological, and economic consequences of beach wrack removal are analysed to improve the attractiveness of beaches for recreational purposes. It also includes potential contribution to Baltic Sea water restoration processes through the removal of the organic part of beach cast, where indeed more studies about the chemical (nutrients, metals) composition of beach wrack are required for reliable calculation of a depuration rate. For local economies within the Baltic Sea region, the organic part of beach cast (beach wrack and terrestrial debris) has reasonable economic prospects as a renewable natural resource, e.g. for soil improvement products, in fertilisers and bio-coal production, for landfill covers (contributing to climate change mitigation), biogas generation, and even for coastal protection by providing humus-like material for accelerated dune vegetation succession. For all these recycling options the development of cost-efficient technologies for collecting beach cast on sandy as well as stony beaches and also for separating the organic part from sand and anthropogenic litter (mainly plastic), is urgently required. Amendments of legal regulations, that better reflect the dualism of beach cast are also required. In essence, dualism results from the fact that beach wrack is a part of nature (or a natural resource) when it remains on a beach. However, beach wrack immediately becomes legally categorised as waste once humans collect it irrespective of its litter content. Another legal aspect being dealt with originates from the migration of the beach wrack between water and beach, whilst it is an object of epleagl cleaning operations only at the beach it onto the beach, but not whilst in the water.

  • 32. Cossu, Raffaello
    et al.
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Salerni, E
    Landfill mining in Europe and USA1996In: ISWA Yearbook, p. 107-114Article in journal (Refereed)
  • 33.
    Davydov, Roman
    et al.
    Peter the Great St. Petersburg Polytechnic University, Russia.
    Sokolov, Michael
    All-Russian Research Institute of Phytopathology, Russia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Glinushkin, A.
    All Russian Res Inst Phytopathol, Russia.
    Markaryan, A.
    The application of pesticides and mineral fertilizers in agriculture2018In: MATEC Web of Conferences, EDP Sciences, 2018Conference paper (Refereed)
    Abstract [en]

    Regulation of using pesticides and agrochemicals application in agriculture is one of the important problem now, as also the problem of storage of mineral fertilizers and their improper using, which have negative influence on the chemical and the food security of the country. This paper discusses the features and benefits of monodisperse aerosols of pesticides in plant protection after a long-term research. A new line of development of science, engineering, industrial and innovative technologies-the author's project "Monodisperse Anthropogenic Aerosols" is proposed. The measures for its implementation are presented. © The Authors, published by EDP Sciences, 2018.

  • 34.
    de Sa Salomao, Andre Luis
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Rio de Janeiro State University.
    Soroldoni, Sanye
    Rio de Janeiro State University.
    Marques, Marcia
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Rio de Janeiro State University.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Bila, Daniele
    Rio de Janeiro State University.
    Effects of single and mixed estrogens on single and combined cultures of D. subspicatus and P. subcapitata2014In: Bulletin of Environmental Contamination and Toxicology, ISSN 0007-4861, E-ISSN 1432-0800, Vol. 93, no 2, p. 215-221Article in journal (Refereed)
    Abstract [en]

    This paper investigates the effect of estrone (E1), 17 beta-estradiol (E2) and 17 alpha-ethinylestradiol (EE2) individually and mixed at equal proportions (1:1:1) on Desmodesmus subspicatus and Pseudokirchneriella subcapitata in single and combined cultures (S+) at different exposure times basedon algal growth (in vivo chlorophyll fluorescence and cell counting) and coenobium formation. EE2 and E2 were more toxic to individual and combined (S+) cultures than was E1. The frequency of coenobium formation by D. subspicatus increased significantly for all estrogens and all concentrations. After 96 h, D. subspicatus prevailed in S+. The results of the exposure to E+ suggested a less-than-additive effecton D. subspicatus and S+ and additive effect on P. subcapitata. Toxic effects occurred for both species exposed to E+ with individual estrogen concentrations below the NOEC of each species. Assays must include changes in response due to the exposure of more than one species to more than one estrogen.

  • 35.
    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)
  • 36.
    Diuldin, M. V.
    et al.
    All-Russian Research Institute of Phytopathology, Russia;Peter the Great Saint Petersburg Polytechnic University, Russia.
    Melebayew, D.
    Turkmen State University Named after Magtymguly, Turkmenistan.
    Terukov, E.
    Ioffe Institute, Russia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Kosolapov, V. M.
    FWRC WPA Moscow, Russia.
    Bobyl, A. V.
    Ioffe Institute, Russia.
    Pashikova, T. D.
    Yagshygeldi Kakayev International University of Oil and Gas, Turkmenistan.
    Garadzha, N.
    Lomonosov Moscow State Unuiversity, Russia.
    Shamuhammedowa, M.
    Turkmen State University Named after Magtymguly, Turkmenistan.
    Highly sensitive photodetectors on the basis of Au-oxide-n-GaP0.4As0.62022In: IOP Conference Series: Earth and Environmental Science, Volume 1096,, Institute of Physics (IOP), 2022, Vol. 1096, no 1, article id 012005Conference paper (Refereed)
    Abstract [en]

    This paper presents the results of studies of the photoelectric properties of Au-oxide-n-GaP0.4As0.6 nanostructures with different thicknesses of oxide layer (10-100Å) in the visible and ultraviolet regions of the spectrum. As a result, photodetectors of UV radiation based on Au-oxide-n-GaAs0.6P0.4 nanostructures with an optimal thickness of the oxide layer (δ=30-60 Å) were developed. The creation of highly effective photodetectors of solar ultraviolet radiation (λ=280-400 nm, h ...=3,1-4,43 eV) for ecological purposes has been reported. © Published under licence by IOP Publishing Ltd.

  • 37.
    Fadeenko, V. B.
    et al.
    Peter Great St Petersburg Polytech Univ, Russia.
    Rud', V. Yu.
    Peter Great St Petersburg Polytech Univ, Russia;All Russian Res Inst Phytopathol, Russia.
    Rud', Yu. V.
    Russian Acad Sci, Russia.
    Glinushkin, A. P.
    All Russian Res Inst Phytopathol, Russia.
    Shpunt, V. Ch.
    Russian Acad Sci, Russia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Photoluminescence spectroscopy features in the study of green leaves drying process2018In: INTERNATIONAL CONFERENCE PHYSICA.SPB/2017 / [ed] Averkiev, NS Poniaev, SA Sokolovskii, GS, Institute of Physics Publishing (IOPP), 2018, p. 1-5, article id UNSP 012030Conference paper (Refereed)
    Abstract [en]

    The presented work demonstrates new results of studying the photoluminescence kinetics of green leaves of Brassica rapa L. that were separated from the parent plant and in fact is the logical development of our studies. We found that the time dependence of its intensity includes 2 stages characterized by the fact that in the first one there is an increase in intensity, reaching a maximum and then decrease, but with long drying times in conditions of constant room temperature, it does not fall below its characteristic value for a living plant.

  • 38.
    Fathollahzadeh, Homayoun
    et al.
    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.
    Bhatnagar, Amit
    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.
    Significance of environmental dredging on metal mobility from contaminated sediments in the Oskarshamn Harbor, Sweden2015In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 119, p. 445-451Article in journal (Refereed)
    Abstract [en]

    Metals are often seen as immobile in bottom sediments as long as these environmental sinks remain undisturbed. The aim of this paper was to evaluate the potential metal mobility due to resuspension under pseudo-dredging conditions of contaminated sediments in the Oskarshamn Harbor that are likely to be dredged as part of a remediation program established in Sweden. To address this concern, mixtures of water slurries were sampled from pore, leaching, and surface water over a period of nearly 36 d, and the major ions and trace metal concentrations determined. The results of this study pointed out the potential mobility and toxicity of metals posed by temporary changes during dredging operations, and highlighted the potential release of Cu, Pb, Zn, Mn, and Ni to the environment. Among the toxic metals, regarding pre and post dredging, Cu and Pb significantly demonstrated to be in ionic form, apparently because of dissolution of Fe-Mn oxy/hydroxides and decomposition of organic matter. (C) 2014 Elsevier Ltd. All rights reserved.

  • 39.
    Fathollahzadeh, Homayoun
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Sveriges Lantbruksuniversitet, Uppsala.
    Kaczala, Fabio
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Bhatnagar, Amit
    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 metals in contaminated sediments from Oskarshamn Harbor, Oskarshamn, Sweden2014In: Environmental Science and Pollution Research, ISSN 0944-1344, E-ISSN 1614-7499, Vol. 21, no 4, p. 2455-2464Article in journal (Refereed)
    Abstract [en]

    Bottom sediments in coastal regions have been considered the ultimate sink for a number of contaminants, e. g., toxic metals. In this current study, speciation of metals in contaminated sediments of Oskarshamn harbor in the southeast of Sweden was performed in order to evaluate metal contents and their potential mobility and bioavailability. Sediment speciation was carried out by the sequential extraction BCR procedure for As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn and the exchangeable (F1), reducible (F2), oxidizable (F3), and residual (R) fractions were determined. The results have shown that Zn and Cd were highly associated with the exchangeable fraction (F1) with 42-58 % and 43-46 %, respectively, of their total concentrations in the mobile phase. The assessment of sediment contamination on the basis of quality guidelines established by the Swedish Environmental Protection Agency (SEPA) and the Italian Ministry of Environment (Venice protocol for dredged sediments) has shown that sediments from Oskarshamn harbor are highly contaminated with toxic metals, especially Cu, Cd, Pb, Hg, As, and Zn posing potential ecological risks. Therefore, it is of crucial importance the implementation of adequate strategies to tackle contaminated sediments in coastal regions all over the world.

  • 40. Fedorov, M
    et al.
    Rud, V YuHogland, WilliamUniversity of Kalmar, School of Pure and Applied Natural Sciences.
    Proceedings of the 3rd International Youth Environmental Forum ECOBALTICA2000Conference proceedings (editor) (Other academic)
  • 41.
    Ferrans, Laura
    et al.
    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.
    Environmental monitoring of a dredging project with a focus on the dewatering treatment system2022In: WODCON XXIII Proceedings / [ed] van Rhee C., Central Dredging Association (CEDA) , 2022Conference paper (Refereed)
  • 42.
    Ferrans, Laura
    et al.
    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.
    Using dredged sediments as a plant-growing substrate: New source of nutrients2021In: 12th International SedNet conference (online), from 28 June -2 July 2021Sediment Challenges and Opportunities due to Climate Change and Sustainable Development, 2021Conference paper (Refereed)
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  • 43.
    Ferrans, Laura
    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.
    Burlakovs, Juris
    Estonian University of Life Sciences, Estonia.
    Klavins, Maris
    University of Latvia, Latvia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Linnaeus University, Linnaeus Knowledge Environments, Water.
    Chemical speciation of metals from marine sediments: assessment of potential pollution risk while dredging, a case study in southern Sweden2021In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 263, no January, p. 1-9, article id 128105Article in journal (Refereed)
    Abstract [en]

    Contamination associated with metals is a critical concern related to their toxicity, persistence, and bio-accumulation. Trace elements are partitioned into several chemical forms, which some are more labile during fluctuations in the environment. Studying the distribution of metals between the different chemical fractions contributes to assess their bioavailability and to identify their potential risk of contamination to surrounding environments. This study concerns the speciation of metals (Pb, Cr, Ni, Zn and Fe) from sediments coming out from Malmfjärden bay, Sweden. The aim was to assess the potential risk of metal pollution during present and future dredging as well as while using dredged sediments in beneficial uses. The Tessier speciation procedure was chosen, and the results showed that low concentrations of metals were associated with the exchangeable fraction. In contrast, the major concentrations were linked to the residual part. The risk indexes (contamination factor and risk assessment code) showed that, during dredging activities, there is a low concern of pollution for Cr, Ni and Fe and a medium risk for Pb and Zn. Additionally, in all elements, the sum of non-residual concentrations was below the Swedish limits for using dredged sediments in sensitive lands. The findings suggested that the investigated metals in Malmfjärden sediments are related to low risks of spreading during using in beneficial uses.

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  • 44.
    Ferrans, Laura
    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.
    Gao, Ling
    Beihua University, China.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Characterization of dredged sediments: a first guide to define potentially valuable compounds - the case of Malmfjärden Bay, Sweden2019In: Advances in Geosciences, ISSN 1680-7340, E-ISSN 1680-7359, Vol. 49, p. 137-147Article in journal (Refereed)
    Abstract [en]

    Millions of tons of bottom sediments are dredged annually all over the world. Ports and bays need to extract the sediments to guarantee the navigation levels or remediate the aquatic ecosystem. The removed material is commonly disposed of in open oceans or landfills. These disposal methods are not in line with circular-economy goals and additionally are unsuitable due to their legal and environmental compatibility. Recovery of valuables represents a way to eliminate dumping and contributes towards the sustainable extraction of secondary raw materials. Nevertheless, the recovery varies on a case-by-case basis and depends on the sediment components. Therefore, the first step is to analyse and identify the sediment composition and properties. Malmfjärden is a shallow semi-enclosed bay located in Kalmar, Sweden. Dredging of sediments is required to recuperate the water level. This study focuses on characterizing the sediments, pore water and surface water from the bay to uncover possible sediment recovery paths and define the baseline of contamination in the water body. The results showed that the bay had high amounts of nitrogen (170–450 µg L−1 ), leading to eutrophication problems. The sediments mainly comprised small size particle material (silt, clay and sand proportions of 62 %–79 %, 14 %–20 %, 7 %–17 %, respectively) and had a medium–high level of nitrogen (7400–11 000 mg kg−1 ). Additionally, the sediments had little presence of organic pollutants and low–medium concentration of metals or metalloids. The characterization of the sediments displays a potential use in less sensitive lands such as in industrial and commercial areas where the sediments can be employed as construction material or as plant-growing substrate (for ornamental gardens or vegetation beside roads).

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  • 45.
    Ferrans, Laura
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Jani, Yahya
    Malmö University, Sweden.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Linnaeus University, Linnaeus Knowledge Environments, Water.
    Chemical extraction of trace elements from dredged sediments into a circular economy perspective: Case study on Malmfjärden Bay, south-eastern Sweden2021In: Resources, Environment and Sustainability, E-ISSN 2666-9161, Vol. 6, article id 100039Article in journal (Refereed)
    Abstract [en]

    Worldwide, sediments are dredged from water bodies to guarantee proper water levels and remediate aquatic ecosystems. Dredged sediments contain metals that could interfere with recycling if the concentrations overpass permissible limits. Washing of elements from sediments represents a technique to decrease the concentration of metals, and it could introduce a new source of elements. The current study aimed to employ ethylenediamine-tetraacetic acid (EDTA) and ethylenediamine-disuccinic acid (EDDS) and investigate the effect of operational parameters (concentration and pH) on the chemical extraction of metals from dredged sediments. Core sediments were extracted from sampling stations around Malmfjärden bay, Sweden. The results suggested that lead, zinc and copper were the elements with higher extraction rates, followed by arsenic and nickel. Chromium was poorly extracted. EDTA was more efficient than EDDS in dissolving the elements. Moreover, acidic conditions offered higher extraction rates for As using both chelators and for Pb employing EDTA. The 0.05 M concentration presented a higher mean extraction rate than 0.01 M for Cu, Cr and Ni for EDTA and EDDS. The findings in this study suggest that sediment washing is a promising technique to decrease metal concentrations in sediments and enhancing the feasibility to use the material for beneficial uses.

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  • 46.
    Ferrans, Laura
    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.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Testing of heavy metals recovery from dredged sediments2019In: Sediment as a dynamic natural resource from catchment to open sea / [ed] Marjan Euser, 2019Conference paper (Refereed)
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  • 47.
    Ferrans, Laura
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Nilsson, Alexander
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Schmieder, Frank
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Pal, Divya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Rahmati-Abkenar, Mahboubeh
    Stockholm Environment Institute, Sweden.
    Marques, Marcia
    Rio de Janeiro State University-UERJ, Brazil.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Life Cycle Assessment of Management Scenarios for Dredged Sediments: Environmental Impacts Caused during Landfilling and Soil Conditioning2022In: Sustainability, E-ISSN 2071-1050, Vol. 14, no 20, p. 13139-13139Article in journal (Refereed)
    Abstract [en]

    The management of dredged sediments is a challenging issue since it involves the interconnection of complex economic, social, technical and environmental aspects. The EU LIFE SUREproject aimed to apply a more sustainable dredging technique to Malmfjärden Bay in Kalmar/Sweden(a shallow urban water body with a high content of nutrients) and, additionally, it involved beneficial uses for the dredged material, in line with the circular economy concept. To achieve this, a life cycle assessment (LCA) study was carried out to assess the potential environmental impacts associated with two scenarios: sediment landfilling (S1) and soil conditioning (S2). This LCA study also aimed to evaluate and compare the costs related to each scenario. S1 contemplated the construction and operation of the landfill for 100 years, including the collection and discharge of leachate and biogas. S2 included the use of sediments in soils and the avoidance of producing and using fertilisers. Results showed that (S2) soil conditioning (total impact: −6.4 PE) was the scenario with fewer environmental impacts and the best economic evaluation. The S2 scenario was mainly related to the positive environmental savings produced by reducing fertiliser consumption (which also avoided purchase costs). However, S2 was also linked to potential negative effects associated with eutrophication and toxicity categories of impacts due to the possible spread of nutrients and pollutants in terrestrial and aquatic environments. In order to mitigate this problem, the sediments could be pre-treated to reduce their risk of pollution. Moreover, the main impact of the landfilling scenario(S1, total impact: 1.6 PE) was the emission of global warming-contributing gases during the operation of the facility. Implementing the soil conditioning scenario was therefore recommended, in line with the aim of the LIFE SURE project. Finally, it was recommended that LCA studies should be applied more often in the future when selecting beneficial uses for dredged sediments. The decision-making process is facilitated when the positive and negative impacts produced by each handling option are considered.

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  • 48.
    Ferrans, Laura
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Schmieder, Frank
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Mugwira, Rumbidzai
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Marques, Marcia
    Rio De Janeiro State Univ UERJ, Brazil.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Dredged sediments as a plant-growing substrate: Estimation of health risk index2022In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 846, article id 157463Article in journal (Refereed)
    Abstract [en]

    Dredging of sediments is conducted worldwide to maintain harbours and water bodies. As a result, large amounts of materials generated require proper management and could have useful applications in a circular economy context. The current use of peat as organic material in cultivating plants requires urgent replacement by more sustainable alternatives. In this context, using nutrient-rich sediments generated by dredging could be an attractive option. However, due to contaminants in dredged sediments, more investigations are required. The present study investigated the potential to employ dredged material as a plant-growing substrate to cultivate lettuce (Lactuca sativa). The study employed compost and dredged sediments from Malmfj & auml;rden Bay, Sweden, with low and high nutritional content(LN and HN, respectively), with and without polymer (PO) used for dewatering. The tests were carried out under con-trolled conditions in a greenhouse, and the studied substrates were (% vol): (1) 100 % sediment (100S(HN)); (2) 50 %sediment +50 % compost (50S(LN)-50C); (3) 70 % sediment +30 % compost (70S(LN)-30C); (4) 50 % polymer sediment+50 % compost (50S(PO)-50C);and (5) 100 % compost (100C). Fertilisers were added to 50S(LN)-50Cand 70SLN-30C during the experiment. Lettuces with the highest weight were harvested from substrates 100C, 50S(PO)-50C and 50S(LN)-50C.However, the lettuces only reached a weight of 18.57 +/- 4.67 g. The results showed that a main limitation of the growth was probably a lack of aeration of the sediments during sampling and development of the experiment. The low aeration possibly caused a lack of available forms of N in the substrates, hindering the growth. Lettuces harvested from substrates containing sediments presented Cd concentrations slightly overpassing the Swedish thresholds, and the health risk index was marginally exceeding 1. Hence, sediments need to be pre-treated before using them to cultivate edible crops, or they could be employed to cultivate ornamental or bioenergy plants

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  • 49. Fiodorov, M P
    et al.
    Hogland, WilliamUniversity of Kalmar, School of Pure and Applied Natural Sciences.Rud, V Yu
    Book of Proceedings of ECOBALTIC 2006 – The VI International Youth Environmental Forum2006Conference proceedings (editor) (Other academic)
  • 50. Fiodorov, M P
    et al.
    Hogland, WilliamUniversity of Kalmar, School of Pure and Applied Natural Sciences.Rud, V Yu
    Proceedings of the V th International Forum Ecobaltica2004Conference proceedings (editor) (Other academic)
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