lnu.sePublications
Change search
Link to record
Permanent link

Direct link
BETA
Publications (10 of 30) Show all publications
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
Show others...
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
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
Show others...
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
Show others...
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
Show others...
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
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
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
Mutafela, R., Jani, Y. & Hogland, W. (2018). Circular Economy Perspectives in Managing Old Contaminated Glass Dumps. In: 11th International Conference on the Establishment of Cooperation among Companies and Institutions in the Nordic Countries, the Baltic Sea Region and the World, Kalmar, Sweden, November 19-21, 2018: Book of Abstracts. Paper presented at Linnaeus Eco-Tech 2018 (pp. 149). Kalmar, Växjö: Linnaeus university
Open this publication in new window or tab >>Circular Economy Perspectives in Managing Old Contaminated Glass Dumps
2018 (English)In: 11th International Conference on the Establishment of Cooperation among Companies and Institutions in the Nordic Countries, the Baltic Sea Region and the World, Kalmar, Sweden, November 19-21, 2018: Book of Abstracts, Kalmar, Växjö: Linnaeus university , 2018, p. 149-Conference paper, Oral presentation with published abstract (Other academic)
Abstract [en]

Landfills and dumpsites have been the ultimate end of life sinks for various materials and products. As such, they are considered rich stocks of secondary raw materials for the circular economy. However, most of them are non-sanitary as they lack protective measures against environmental contamination. Over the years, the need to exploit the resource potential of landfills as well as to mitigate their contamination problems, among other factors, has led to the concept of landfill mining, resulting in a number of mainly pilot scale mining of landfills and dumps globally. In southeastern Sweden for instance, where there are over forty old, contaminated glass dumps, a number of remedial dumpsite excavations have been going on, with eventual landfilling of excavated materials in sanitary landfills. Hence, based on the Swedish situation, this study presents three scenarios about: contaminated materials in non-sanitary dumps as they currently stand; ongoing material excavations with subsequent landfilling; and material excavations coupled with materials recovery towards reduced landfilling. The third scenario is presented as more suitable from the circular economy perspective. The scenario is thus discussed in terms of technological implications of the process from identification of concealed valuable materials in dumps to their excavation, sorting, temporal storage, valorization and eventual resource recovery. In addition, legal implications as well as potential social, economic and environmental barriers against the scenario’s implementation are discussed. Finally, the study provides recommendations that would be useful in decision making surrounding the management of contaminated and non-sanitary dumpsites.

Place, publisher, year, edition, pages
Kalmar, Växjö: Linnaeus university, 2018
Keywords
Circular economy, glass waste, heavy metals, landfill mining, waste management
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-82521 (URN)978-91-88898-28-9 (ISBN)
Conference
Linnaeus Eco-Tech 2018
Available from: 2019-05-13 Created: 2019-05-13 Last updated: 2019-05-28Bibliographically approved
Jani, Y. (2018). Landfills and glass dumpsites as future bank accounts of resources – waste characterization and trace elements extraction. (Doctoral dissertation). Växjö: Linnaeus University Press
Open this publication in new window or tab >>Landfills and glass dumpsites as future bank accounts of resources – waste characterization and trace elements extraction
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Environmental pollution and health threats as well as scarcity of raw materials, water, food and energy are among the main challenges our world are now facing. Simultaneously, landfills and open dumpsites still are the dominant global waste disposal option even with their long term environmental impacts in case of greenhouse gases and contaminated leachates. In this thesis, landfill mining is suggested as a tool that should be included in an enhanced circular economy model (repair, reuse and recycle + extract and recovery) by considering the extraction/recovery of the lost materials in landfills and dumpsites as secondary resources.

Characterization data (composition and physicochemical properties) is considered as a vital source for information for: i. the valorization of excavated wastes, ii. to explore potential hazards and iii. as an important tool for theassessment of the waste management systems and policies. In this thesis,excavated wastes from a classic landfill (Högbytorp in Sweden), a landfill buildup according to the European Directive requirements (Torma in Estonia) andhazardous glass dumpsite (Pukeberg in Sweden) was characterized as a centralstep in exploring the potential of recovering of valuables. In addition, the extraction of trace elements from waste glass and different finefractions were also investigated. The reduction-melting method was developedto extract hazardous concentrations of trace elements from old art and crystalglasses with more than (99%) of recovery of Pb, Cd and As. While threechelating agents (EDTA, DTPA and NTA) were used to extract Pb, Cd, Asand Zn from fine fraction (<2 mm) sampled from Pukeberg glasswork with anextraction efficiency of (40%). Besides, the fractionations of the metals Cu, Znand Cr in the fine fractions (<10 mm) excavated from Högbytorp and Tormalandfills were studied by using a modified sequential extraction procedure.

The findings of this thesis highlighted the need to consider the dumped wastesas secondary resources and landfills and dumpsites as future bank accounts offuture raw materials instead of being burden to the human health and theenvironment.

Place, publisher, year, edition, pages
Växjö: Linnaeus University Press, 2018
Series
Linnaeus University Dissertations ; 308
Keywords
Landfill mining, metals extraction, glass dumpsites, hazardous waste, chemical extraction, reduction-melting
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-69898 (URN)978-91-88761-15-6 (ISBN)978-91-88761-16-3 (ISBN)
Public defence
2018-02-02, 15:57 (English)
Opponent
Supervisors
Available from: 2018-01-17 Created: 2018-01-16 Last updated: 2018-03-14Bibliographically approved
Mutafela, R., Kaczala, F., Jani, Y., Aid, G. & Hogland, W. (2018). Methods for investigation of old glass waste dumpsites. In: Peter Tom Jones & Lieven Machiels (Ed.), Proceedings of the 4th International Symposium On Enhanced Landfill Mining: 5-6 February 2018, Mechelen, Belgium. Paper presented at 4th International Symposium On Enhanced Landfill Mining, Mechelen, Belgium, February 5-6, 2018 (pp. 145-150). Leuven, Belgium: European Enhanced Landfill Mining Consortium (EURELCO)
Open this publication in new window or tab >>Methods for investigation of old glass waste dumpsites
Show others...
2018 (English)In: Proceedings of the 4th International Symposium On Enhanced Landfill Mining: 5-6 February 2018, Mechelen, Belgium / [ed] Peter Tom Jones & Lieven Machiels, Leuven, Belgium: European Enhanced Landfill Mining Consortium (EURELCO) , 2018, p. 145-150Conference paper, Published paper (Refereed)
Abstract [en]

An old glass dumpsite in southern Sweden was mapped and investigated to locate

glass abundance zones (“hotspots”) and understand physicochemical parametres of

the waste. Global Positioning System (GPS) was used for mapping the site while a

geophysical method of Electrical Resistivity was used for detecting glass hotspots in

the dump. Test pits were excavated and samples taken, after which hand sorting,

sieving and X-Ray Fluorescence (XRF) scanning of the waste were used for

physicochemical properties. Geophysical mapping was found to be a feasible nondestructive

tool in locating glass hotspots. In terms of composition, glass was found

to be the most abundant fraction at 90% average from all 4 sampling points. From

particle size distribution, particles > 11.3 mm were more abundant (75% average)

than particles < 11.3 mm. XRF scanning yielded As, Cd and Pb concentrations of 3,700

mg/kg, 500 mg/kg and 5,300 mg/kg, respectively. In conclusion, it is possible to locate

glass hotspots and excavate them carefully in readiness for metal extraction while

avoiding the need for complicated sorting post-excavation.

Place, publisher, year, edition, pages
Leuven, Belgium: European Enhanced Landfill Mining Consortium (EURELCO), 2018
Keywords
Landfill mining, geophysics, waste valorisation, circular economy, glass waste
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-82519 (URN)9789082825909 (ISBN)
Conference
4th International Symposium On Enhanced Landfill Mining, Mechelen, Belgium, February 5-6, 2018
Available from: 2019-05-13 Created: 2019-05-13 Last updated: 2019-05-17Bibliographically approved
Burlakovs, J., Jani, Y., Kriipsalu, M., Vincevica-Gaile, Z., Kaczala, F., Celma, G., . . . Klavins, M. (2018). On the way to 'zero waste' management: Recovery potential of elements, including rare earth elements, from fine fraction of waste. Journal of Cleaner Production, 186, 81-90
Open this publication in new window or tab >>On the way to 'zero waste' management: Recovery potential of elements, including rare earth elements, from fine fraction of waste
Show others...
2018 (English)In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 186, p. 81-90Article in journal (Refereed) Published
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.

Place, publisher, year, edition, pages
Elsevier, 2018
Keywords
Circular economy, Element recovery, Landfill mining, Zero waste concept, Waste valorisation
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-76767 (URN)10.1016/j.jclepro.2018.03.102 (DOI)000430785600008 ()2-s2.0-85046016140 (Scopus ID)
Available from: 2018-07-11 Created: 2018-07-11 Last updated: 2019-08-29Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-8906-9271

Search in DiVA

Show all publications