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Physico-chemical Characterization of Fine Fraction Materials from a Swedish Glassworks Dumpsite
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. (Environmental Science and Engineering)ORCID iD: 0000-0002-9012-1847
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.ORCID iD: 0000-0002-7920-8001
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.ORCID iD: 0000-0002-1903-760X
2018 (English)In: Proceedings of the 6th International Conference on Sustainable Solid Waste Management, Naxos, Greece, June 13-16, 2018 / [ed] Dr. Konstantinos Moustakas, 2018Conference paper, Published paper (Refereed)
Abstract [en]

Waste physico-chemical characteristics and the presence and availability of three metals (As, Cu and Pb) in a glassworks dumpsite were investigated to assess excavated waste handling and storage requirements pre-valorisation. Eight 2 m deep test pits (TPs) were excavated and sampled at 0.5 m depth intervals. The excavated waste was hand-sorted, followed by X-Ray Fluorescence (XRF) scanning, leaching and HNO3 digestion of the fine fraction (< 10 mm), and assessing results against Swedish EPA regulations. The waste composition was glass > inert > organic > “other” waste, whereas the total metal concentrations (XRF) were Pb > As > Cu. Pb (all TPs) and As (four TPs) were in hazardous levels whereas Cu was not. TDS (2856 ± 467 mg kg-1) and DOC (56.4 ± 21.8 mg kg-1) were lower than the inert, non-hazardous and hazardous waste storage thresholds, whereas F- (10.8 ± 2 mg kg-1) was higher than the inert waste storage threshold. Moisture content was 24.4 ± 11.4% while pH was 7.3 ± 0.8. Leached metal concentrations were Pb > As > Cu, with low metal leachability (0.02% - 0.2%), and the leached amounts were lower than the non-hazardous and hazardous waste storage thresholds, but higher than the inert waste storage thresholds. HNO3 digestion yielded As and Cu concentrations higher than the thresholds for sensitive and less sensitive land uses, and Pb concentrations higher than the non-hazardous waste storage threshold. Metal recovery was 49.3%, 44.2% and 17.9% for Cu, Pb and As respectively. Although the waste was hazardous in nature based on total metal concentrations and Pb concentrations from acid digestion, the leaching was not in hazardous levels due to strongly bound metals in the waste material.

Place, publisher, year, edition, pages
2018.
Keywords [en]
Glass waste, fine fraction, heavy metals, landfill mining, waste characterization
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
URN: urn:nbn:se:lnu:diva-82518OAI: oai:DiVA.org:lnu-82518DiVA, id: diva2:1315426
Conference
6th International Conference on Sustainable Solid Waste Management, Naxos, Greece, June 13-16, 2018
Available from: 2019-05-13 Created: 2019-05-13 Last updated: 2019-05-15Bibliographically approved

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Mutafela, RichardMarques, MarciaHogland, William

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