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Geochemical modeling of Copper (II) speciation in MSWI bottom ash leachates
Swedish Geotechnical Institute.
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2012 (English)In: WASCON 2012 - Towards Effective, Durable and Sustainable Production and Use of Alternative Materials in Construction: Proceedings of the 8th International Conference on Sustainable Management of Waste and Recycled Materials in Construction, Gothenburg, Sweden, 30 May - June 1, 2012  / [ed] Arm, M, Vandecasteele, C, Heynen, J, Suer, P, Lind, B / [ed] Arm, M, Vandecasteele, C, Heynen, J, Suer, P, Lind, B, Linköping: ISCOWA , 2012, p. 1-4Conference paper, Published paper (Refereed)
Abstract [en]

Municipal solid waste incinerator (MSWI) bottom ash is produced world-wide in large quantities and is generally landfilled or re-used in construction. The leaching of contaminants, such as heavy metals, oxyanions and salts, from these residues is a concern in many countries and may inhibit the potential re-use of MSWI bottom ash as a secondary material (Chandler et al., 1997; Olsson et al., 2006; van Zomeren and Comans, 2004). Copper (Cu) is a potentially toxic trace element that can be leached in relatively large amounts from the bottom ash when utilized for construction purposes. It is already well known that the Cu present in MSWI bottom ash leachates is largely bound to dissolved organic matter (DOM) (Arickx et al., 2007; Dijkstra et al., 2006; Meima et al., 1999; Olsson et al., 2007; van Zomeren and Comans, 2004). The strong complexation with DOM enhances the leaching and mobility of Cu, but may reduce the toxicity of the leachate, as the Cu-DOM complexes are less susceptible to biological uptake than the free Cu2+ ion. In order to make reliable long term leaching predictions and assess the risk for ecotoxicological impacts from MSWI bottom ash management alternatives, knowledge is therefore needed on both the total dissolved Cu concentration and the Cu speciation in the leachate.

Place, publisher, year, edition, pages
Linköping: ISCOWA , 2012. p. 1-4
Keywords [en]
Bottom ash, Incinerator ash, Municipal waste, Leaching, Leachate, Speciation, Geochemistry, Copper, Metal, Conference, Göteborg, 2012, English
National Category
Earth and Related Environmental Sciences Geotechnical Engineering
Identifiers
URN: urn:nbn:se:swedgeo:diva-884Local ID: 000077887OAI: oai:DiVA.org:swedgeo-884DiVA, id: diva2:1365887
Conference
8th International Conference on Sustainable Management of Waste and Recycled Materials in Construction, Gothenburg, Sweden, 30 May - June 1, 2012
Available from: 2019-10-25 Created: 2019-10-25 Last updated: 2019-10-25

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