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Classification of waste to enable utilization in an environmental safe way
Statens geotekniska institut.
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2012 (Engelska)Ingår i: 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, Linköping: ISCOWA , 2012, s. 1-4Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The Dept. of Applied Environmental Science (ITM), Stockholm University, and the Swedish Geotechnical Institute (SGI) have worked in projects with the main aim to improve the understanding of governing mechanisms for ecotoxicity of ash materials. With the ambition to provide recommendations on classification of waste according to H-14, we have characterised bottom and fly ash materials based on total levels in solid materials and eluates. In addition, the eluates have been characterized with a battery of ecotoxicity tests. The most important findings from the projects are: (1) considering harmonization of waste and chemical legislations (i.e. CLP), the classification of waste according to H-14 will involve drastic changes as opposed to more traditionally waste characterization methods, both related to choice of leaching conditions (e.g. L/S ratios (greater than 1000), pH) and ecotoxicity tests (test species, endpoints) (2) classification based on total content of substances over-estimates the ecotoxicological hazard potential as compared with ecotoxicity testing of eluates; (3) when leaching is performed at L/S (less than or equal) 10 L/kg, components not classified as hazardous, in particular potassium, significantly influence the toxicity of the eluates, which is problematic from a hazard classification perspective, but likely negligible from a long-term environmental risk perspective.

Ort, förlag, år, upplaga, sidor
Linköping: ISCOWA , 2012. s. 1-4
Nyckelord [en]
Fly ash, Bottom ash, Incinerator ash, Classification, Ecotoxicology, Conference, Göteborg, 2012, English
Nationell ämneskategori
Geovetenskap och miljövetenskap Geoteknik
Identifikatorer
URN: urn:nbn:se:swedgeo:diva-882Lokalt ID: 000077888OAI: oai:DiVA.org:swedgeo-882DiVA, id: diva2:1365885
Konferens
8th International Conference on Sustainable Management of Waste and Recycled Materials in Construction, Gothenburg, Sweden, 30 May - June 1, 2012
Tillgänglig från: 2019-10-25 Skapad: 2019-10-25 Senast uppdaterad: 2019-10-25

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