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The interaction between concrete pavement and corrosion-induced copper runoff from buildings
KTH, Skolan för kemivetenskap (CHE), Kemi, Korrosionslära (stängd 20081231).ORCID-id: 0000-0003-2206-0082
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2008 (Engelska)Ingår i: Environmental Monitoring & Assessment, ISSN 0167-6369, E-ISSN 1573-2959, Vol. 140, nr 1-3, s. 175-189Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Changes in chemical speciation of copper and the capacity of concrete pavement to retain copper in runoff water from external buildings have been investigated at urban field conditions, and in parallel laboratory experiments simulating outdoor scenarios. The research study showed the concrete surface to form a copper rich surface layer (approximate to 50 mu m thick) upon exposure, and a high capacity to significantly reduce the bioavailable fraction of released copper (20-95%). The retention capacity of copper varied between 5 and 20% during single runoff events in the laboratory, and between 10 and 40% of the total copper release during single natural runoff events. The capacity to retain and reduce the bioavailable fraction of non-retained copper increased with increasing wetness of the concrete surfaces, increasing pH of the runoff water and decreasing flow rates. Bioassay testing with bacterial and yeast bioreporters showed the bioavailable fraction of non-retained copper to be significantly lower than the total copper concentration in the runoff water, between 22 and 40% for bacteria and between 8 and 31% for yeast. The application of generated data to simulate a fictive outdoor scenario, suggests a significant reduction of bioavailable and total copper to background values during environmental entry as a result of dilution, and the interaction with solid surfaces, organic matter and complexing agents already in the drainage system.

Ort, förlag, år, upplaga, sidor
2008. Vol. 140, nr 1-3, s. 175-189
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Naturvetenskap
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URN: urn:nbn:se:kth:diva-17412DOI: 10.1007/s10661-007-9858-0ISI: 000254434400016Scopus ID: 2-s2.0-41749092548OAI: oai:DiVA.org:kth-17412DiVA, id: diva2:335456
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QC 20150727

Tillgänglig från: 2010-08-05 Skapad: 2010-08-05 Senast uppdaterad: 2017-12-12Bibliografiskt granskad

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Herting, G.Odnevall Wallinder, IngerLeygraf, Christofer

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