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Composition of waste at an early EU-landfill of Torma in Estonia
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. (ESEG)ORCID iD: 0000-0001-8906-9271
Estonian University of Life Sciences, Estonia.
Estonian University of Life Sciences, Estonia.
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.ORCID iD: 0000-0003-0269-4790
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2017 (English)In: Iranica Journal of Energy and Environment / Iranian Journal of Energy and Environment, ISSN 2079-2115, Vol. 8, no 2, p. 113-117Article in journal (Refereed) Published
Abstract [en]

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

Place, publisher, year, edition, pages
2017. Vol. 8, no 2, p. 113-117
Keywords [en]
Landfill mining, Waste composition, Characterization of landfill, Circular economy, Torma landfill
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
URN: urn:nbn:se:lnu:diva-69894DOI: 10.5829/ijee.2017.08.02.03OAI: oai:DiVA.org:lnu-69894DiVA, id: diva2:1174768
Available from: 2018-01-16 Created: 2018-01-16 Last updated: 2018-01-23Bibliographically approved
In thesis
1. Landfills and glass dumpsites as future bank accounts of resources – waste characterization and trace elements extraction
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

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Jani, YahyaBurlakovs, JurisHogland, MarikaHogland, William

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