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Publications (10 of 337) Show all publications
Stenis, J., Hogland, W., Sokolov, M., Rud, V. & Davydov, R. (2019). Economic management instrument for enhanced supply of utilities to megacities. In: International Scientific Conference "Digital Transformation on Manufacturing, Infrastructure and Service": 21–22 November 2018, Saint-Petersburg, Russian Federation. Paper presented at International Scientific Conference "Digital Transformation on Manufacturing, Infrastructure and Service". 21–22 November 2018, Saint-Petersburg, Russian Federation. Bristol: Institute of Physics Publishing (IOPP) (1), Article ID 012061.
Open this publication in new window or tab >>Economic management instrument for enhanced supply of utilities to megacities
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2019 (English)In: International Scientific Conference "Digital Transformation on Manufacturing, Infrastructure and Service": 21–22 November 2018, Saint-Petersburg, Russian Federation, Bristol: Institute of Physics Publishing (IOPP), 2019, no 1, article id 012061Conference paper, Published paper (Refereed)
Abstract [en]

A cost structure is proposed to enhance the supply of utilities to megacities on a regional operating scale. The introduced methodology involves business administration theory and economics and employs the previously introduced equality principle and the EUROPE (Efficient Use of Resources for Optimal Production Economy) model to impose shadow costs on supply losses to induce economic incentives to improve the functionality of megacities. A case study presents the practical application in an Asian context. It is concluded that the introduced methodology makes the megacities more efficient and improve their functionality. Profitability increases, the technology is advanced, and the environment improves when the EUROPE model is applied on activities that involve supply flows at higher policy analysis levels. Application of an introduced key factor encapsulates megacity aspects. The equity of the regional access to facilities is improved. The developed methods support decision-making when managing megacity supply.

Place, publisher, year, edition, pages
Bristol: Institute of Physics Publishing (IOPP), 2019
Series
IOP Conference Series: Materials Science and Engineering, ISSN 1757-899X ; 497
Keywords
Decision making, Economics, Business administration, Cost structure, Economic incentive, Economic management, Key factors, Megacities, Optimal production, Policy analysis, Manufacture
Identifiers
urn:nbn:se:lnu:diva-82890 (URN)10.1088/1757-899X/497/1/012061 (DOI)2-s2.0-85064856185 (Scopus ID)
Conference
International Scientific Conference "Digital Transformation on Manufacturing, Infrastructure and Service". 21–22 November 2018, Saint-Petersburg, Russian Federation
Available from: 2019-05-23 Created: 2019-05-23 Last updated: 2019-05-23
Burlakovs, J., Kriipsalu, M., Porshnov, D., Jani, Y., Ozols, V., Pehme, K.-M., . . . Klavins, M. (2019). Gateway of Landfilled Plastic Waste Towards Circular Economy in Europe. Separations, 6(2), 1-8, Article ID 25.
Open this publication in new window or tab >>Gateway of Landfilled Plastic Waste Towards Circular Economy in Europe
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2019 (English)In: Separations, E-ISSN 2297-8739, Vol. 6, no 2, p. 1-8, article id 25Article in journal (Refereed) Published
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.

Place, publisher, year, edition, pages
MDPI, 2019
Keywords
circular economy, landfill mining, Plasticene, plastic waste, sorting, thermogravimetry
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-86993 (URN)10.3390/separations6020025 (DOI)000474933600007 ()2-s2.0-85070058659 (Scopus ID)
Available from: 2019-07-26 Created: 2019-07-26 Last updated: 2019-08-29Bibliographically approved
Song, W., Li, J., Fu, C., Wang, Z., Zhang, X., Yang, J., . . . Gao, L. (2019). Kinetics and pathway of atrazine degradation by a novel method: Persulfate coupled with dithionite. Chemical Engineering Journal, 373, 803-813
Open this publication in new window or tab >>Kinetics and pathway of atrazine degradation by a novel method: Persulfate coupled with dithionite
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2019 (English)In: Chemical Engineering Journal, ISSN 1385-8947, E-ISSN 1873-3212, Vol. 373, p. 803-813Article in journal (Refereed) Published
Abstract [en]

Efficient and environmentally friendly activation methods of persulfate (PS) have gained growing attention in the remediation of water or soil polluted by organic contaminants. Among all, the exploration of effective and applicable method for the PS activation becomes one of the hottest topics in the field of organic degradation. Dithionite (DTN) was employed in this study to activate PS and applied to degrade Atrazine (ATZ) without secondary pollution. ATZ could be completely degraded within 90 min by PS/DTN system. ATZ degradation by PS obeyed the pseudo-first-order kinetics and the rate constant values increased from (4.71-5.05) x10(-3) min(-1) to (4.59-5.09) x10(-2) min(-1) with the addition of DTN. Sulfate radicals were verified to be the dominant reactive species through the radical scavenging experiment. PS/DTN system can remain a strong oxidative ability in the range of pH below 9.0. The presence of Cl-, natural organic matter (NOM), and high concentration of HCO3- may inhibit the removal of ATZ while the low concentration of HCO3- can slightly promote the degradation. It was found that the degradation pathways of ATZ by PS/DTN involved de-chlorination and hydroxylation, de-alkylation, and de-amination by the reactive species. The study reveals that PS/DTN system has the broad application prospect in the treatment of refractory pollutants.

Place, publisher, year, edition, pages
Elsevier, 2019
Keywords
Persulfate, Dithionite, Atrazine, Sulfate radical, Degradation pathway
National Category
Environmental Sciences
Research subject
Environmental Science, Environmental Chemistry
Identifiers
urn:nbn:se:lnu:diva-86882 (URN)10.1016/j.cej.2019.05.110 (DOI)000471682900076 ()2-s2.0-85065863697 (Scopus ID)
Available from: 2019-07-18 Created: 2019-07-18 Last updated: 2019-08-29Bibliographically approved
Jani, Y., Burlakovs, J., Augustsson, A., Marques, M. & Hogland, W. (2019). Physicochemical and toxicological characterization of hazardous wastes from an oldglasswork dump at southeastern part of Sweden. Chemosphere
Open this publication in new window or tab >>Physicochemical and toxicological characterization of hazardous wastes from an oldglasswork dump at southeastern part of Sweden
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2019 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298Article in journal (Refereed) Accepted
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.

Keywords
Glass waste; Old glassworks; Trace elements; Glassworks dumps; Toxicity; Hazardous glass
National Category
Natural Sciences
Identifiers
urn:nbn:se:lnu:diva-87489 (URN)10.1016/j.chemosphere.2019.124568 (DOI)2-s2.0-85070565543 (Scopus ID)
Available from: 2019-08-10 Created: 2019-08-10 Last updated: 2019-08-29
Mutafela, R., Marques, M., Jani, Y., Kriipsalu, M. & Hogland, W. (2019). Physico-chemical characteristics of fine fraction materials from an old crystal glass dumpsite in Sweden. Chemistry and ecology, 35(8)
Open this publication in new window or tab >>Physico-chemical characteristics of fine fraction materials from an old crystal glass dumpsite in Sweden
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2019 (English)In: Chemistry and ecology, ISSN 0275-7540, Vol. 35, no 8Article in journal (Refereed) Epub ahead of print
Abstract [en]

Physico-chemical characteristics of waste, particularly fine fraction (FF), from an old crystal glass waste dump in Sweden were studied to assess recycling or disposal alternatives. Hand-sorting of the waste indicated glass content of 44.1% while sieving established the FF as a more soil-like mix of glass and other materials constituting 33.3% of all excavated waste. The FF was around neutral pH with 24.4% moisture content, low values of Total Dissolved Solids, Dissolved Organic Carbon and fluorides, but hazardous concentrations of As, Cd, Pb and Zn according to the Swedish Environmental Protection Agency guidelines. While the FF leached metals in low concentrations at neutral pH, it leached considerably during digestion with nitric acid, implying leaching risks at low pH. Thus, the waste requires safe storage in hazardous waste class ‘bank account’ storage cells to avoid environmental contamination as metal recovery and other recycling strategies for the glass waste are being developed. The study could fill the information gap regarding preservation of potential resources in the on-going, fast-paced excavation and re-landfilling of heavy metal contaminated materials in the region.

Place, publisher, year, edition, pages
Taylor & Francis, 2019
Keywords
Waste characterisation, physico-chemical characteristics, glass waste, fine fraction, heavy metals, circular economy
National Category
Environmental Sciences
Research subject
Environmental Science, Environmental technology
Identifiers
urn:nbn:se:lnu:diva-87086 (URN)10.1080/02757540.2019.1648442 (DOI)000479933500001 ()
Funder
Vinnova, 2016-05279
Available from: 2019-08-04 Created: 2019-08-04 Last updated: 2019-08-29
Jani, Y., Mutafela, R., Ferrans, L., Ling, G., Burlakovs, J. & Hogland, W. (2019). Phytoremediation as a promising method for the treatment of contaminated sediments. Iranian Journal of Energy and Environment, 10(1), 58-64
Open this publication in new window or tab >>Phytoremediation as a promising method for the treatment of contaminated sediments
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2019 (English)In: Iranian Journal of Energy and Environment, ISSN 2079-2115, Vol. 10, no 1, p. 58-64Article in journal (Refereed) Published
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.

Place, publisher, year, edition, pages
Iran: Babol Noshirvani University of Technology, 2019
Keywords
Phytoremediation, Metals, Sediments, Dredging
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-82514 (URN)10.5829/ijee.2019.10.01.09 (DOI)
Available from: 2019-05-13 Created: 2019-05-13 Last updated: 2019-05-17Bibliographically approved
Ozola, R., Krauklis, A., Burlakovs, J., Klavins, M., Vincevica-Gaile, Z. & Hogland, W. (2019). Surfactant-Modified Clay Sorbents for the Removal of p-nitrophenol. Clays and clay minerals, 67(2), 132-142
Open this publication in new window or tab >>Surfactant-Modified Clay Sorbents for the Removal of p-nitrophenol
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2019 (English)In: Clays and clay minerals, ISSN 0009-8604, E-ISSN 1552-8367, Vol. 67, no 2, p. 132-142Article in journal (Refereed) Published
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.

Place, publisher, year, edition, pages
Springer, 2019
Keywords
Cationic and Nonionic Surfactants, Clay Sorbents, p-nitrophenol, Sorption, Water Treatment
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-88779 (URN)10.1007/s42860-019-00015-2 (DOI)000477061400002 ()
Available from: 2019-08-28 Created: 2019-08-28 Last updated: 2019-08-28Bibliographically approved
Ferrans, L., Jani, Y. & Hogland, W. (2019). Testing of heavy metals recovery from dredged sediments. In: Marjan Euser (Ed.), Sediment as a dynamic natural resource from catchment to open sea: . Paper presented at 11th International SedNet Conference, 3-5 April 2019, Dubrovnik, Croatia, Sediment as a dynamic natural resource – from catchment to open sea.
Open this publication in new window or tab >>Testing of heavy metals recovery from dredged sediments
2019 (English)In: Sediment as a dynamic natural resource from catchment to open sea / [ed] Marjan Euser, 2019Conference paper, Poster (with or without abstract) (Refereed)
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-83395 (URN)
Conference
11th International SedNet Conference, 3-5 April 2019, Dubrovnik, Croatia, Sediment as a dynamic natural resource – from catchment to open sea
Available from: 2019-05-24 Created: 2019-05-24 Last updated: 2019-05-28Bibliographically approved
Mahmoud, N., Hogland, W., Sokolov, M., Rud, V. & Myazin, N. (2018). Assessment of rainwater harvesting for domestic water supply in palestinian rural areas. In: MATEC Web of Conferences: . Paper presented at 2018 International Scientific Conference on Energy, Environmental and Construction Engineering, EECE 2018, 19 November 2018 through 20 November 2018. EDP Sciences
Open this publication in new window or tab >>Assessment of rainwater harvesting for domestic water supply in palestinian rural areas
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2018 (English)In: MATEC Web of Conferences, EDP Sciences, 2018Conference paper, Published paper (Refereed)
Abstract [en]

Rainwater harvesting in Palestine is a principal water resource that had been adopted since ancient times. However, the system had not been subjected to a thorough assessment. This paper aims at assessing the feasibility of rainwater harvesting for domestic water supply in Palestinian rural areas with special emphasis on socio-cultural and financial aspects as well as harvested water quality. Different methods were used to collect necessary data from a case study village, including literature review, observations, questionnaires and water quality measurement of freshly fallen and harvested rainwater samples. Moreover, domestic water demand and water supply from such a system were compared, and economic feasibility of applying this system was checked. The results revealed that harvested rainwater is a viable resource that can contribute considerably to minimizing water shortage. © The Authors, published by EDP Sciences, 2018.

Place, publisher, year, edition, pages
EDP Sciences, 2018
Series
MATEC Web of Conferences, E-ISSN 2261-236X
Keywords
Harvesting, Rain, Surveys, Water distribution systems, Water quality, Water resources, Water supply, Domestic water supply, Economic feasibilities, Financial aspects, Literature reviews, Rain water harvesting, Rainwater samples, Water quality measurement, Water shortages, Rural areas
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-83835 (URN)10.1051/matecconf/201824506012 (DOI)2-s2.0-85058452570 (Scopus ID)
Conference
2018 International Scientific Conference on Energy, Environmental and Construction Engineering, EECE 2018, 19 November 2018 through 20 November 2018
Available from: 2019-05-28 Created: 2019-05-28 Last updated: 2019-06-13Bibliographically approved
Jani, Y. & Hogland, W. (2018). Chemical extraction of trace elements from hazardous fine fraction at an old glasswork dump. Chemosphere, 195, 825-830
Open this publication in new window or tab >>Chemical extraction of trace elements from hazardous fine fraction at an old glasswork dump
2018 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 195, p. 825-830Article in journal (Refereed) Published
Abstract [en]

Old glassworks siteshave been always associated with contamination by different trace elements likePb, Cd, As, Zn and others. The mixture of soil and waste glass of particlesizes <2mmat one of the oldest Swedish glassworks (the Pukeberg) was studiedby analyzing the trace elements content, organic content (3.6%) and pH (7.4).The results showed hazardous concentrations of Pb (1525 mg/kg), Ba (1312mg/kg), Sb (128 mg/kg), Cd (36 mg/kg), As (118 mg/kg), Zn (1154mg/kg) and Co(263 mg/kg) exceeded the Swedish guidelines of contaminated soil. Batchchemical extraction by the chelating agents EDTA, DTPA and the biodegradableNTA were performed to study the effect of chelating agent concentration and mixingtime on the extraction efficiencies by following a Box-Wilson design ofexperiments. The results displayed good extraction efficiencies (less than 41%)of Pb, Cd, As and Zn by the EDTA, DTPA and NTA, which seemed depends on thetype of chelator. In addition, high correlation between the extraction efficiencies,the chelators concentration and mixing time was found based on the statisticaland experimental results.

Place, publisher, year, edition, pages
Elsevier, 2018
Keywords
Fine fraction, Glass dumps, trace elements, chemical extraction, chelating agents, EDTA
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-69897 (URN)10.1016/j.chemosphere.2017.12.142 (DOI)000424172400088 ()29289910 (PubMedID)2-s2.0-85039748826 (Scopus ID)
Available from: 2018-01-16 Created: 2018-01-16 Last updated: 2019-08-29Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-1903-760X

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