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Lookup NU author(s): Michelle Morrison,
Professor Andrew Aplin
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The intertwined redox geochemistry of carbon, sulphur and iron is at the heart of remediation of acidic waters within passive, anaerobic wetland sediments. Here, we present some preliminary data from a sediment core taken from the Quaking Houses constructed wetland in County Durham, England. The data indicate rapid reduction of both sulphate and iron oxide, with precipitation of iron sulphides and buildup of dissolved iron in sediment porewaters. Successful remediation requires concomitant reduction of sulphate and iron and should guide the future design of treatment systems. Future work must determine the specific reactions occurring within the C-S-Fe system and also the critical rate-limiting step.
Author(s): Morrison MI, Aplin AC
Publication type: Article
Publication status: Published
Journal: Land Contamination and Reclamation
ISSN (print): 0967-0513
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