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Reduction-melting extraction of trace elements from hazardous waste glass from an old glasswork’s dump in the southeastern part of Sweden
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. (ESEG)ORCID iD: 0000-0001-8906-9271
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. (ESEG)ORCID iD: 0000-0002-1903-760X
2017 (English)In: Environmental science and pollution research international, ISSN 0944-1344, E-ISSN 1614-7499, Vol. 24, no 34, p. 26341-26349Article in journal (Refereed) Published
Abstract [en]

At the southeastern part of Sweden, old art and crystal waste glass has been identified as a hazardous waste due to high weight concentrations of Pb (32.398%), Cd (0.085%) and As (1.976%). The reduction-melting technique was used to investigate the extraction of these trace elements from powder waste glass of particle size <1 mm. Following a factorial design technique, the experimental results of the reduction-melting method showed that 99.9% of Pb, 100% of Cd and 99% of As could be extracted. For a batch of 10 g powder waste glass, the found experimental and theoretical optimum operating conditions were 1100 oC of melting temperature, 5 g of Na2CO3, 2 g of carbon and 120 min of melting time. The reduction-melting method displayed promising results which might help in recycling the extracted trace elements and glass compared to the current used solution of landfilling as hazardous wastes. 

Place, publisher, year, edition, pages
Springer, 2017. Vol. 24, no 34, p. 26341-26349
Keywords [en]
Crystal glass, Extraction of trace elements, Glass melting, Old glassworks dumps, Hazardous glass waste, Reduction-melting method
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
URN: urn:nbn:se:lnu:diva-68090DOI: 10.1007/s11356-017-0243-4OAI: oai:DiVA.org:lnu-68090DiVA, id: diva2:1144003
Available from: 2017-09-25 Created: 2017-09-25 Last updated: 2018-02-28Bibliographically 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, YahyaHogland, William

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