C-S-Fe Geochemistry of a Wetland Constructed to Treat Acidic Mine Waters

C-S-Fe Geochemistry of a Wetland Constructed to Treat Acidic Mine Waters			2003
Author(s): Morrison, M. (Univ. of Newcastle, Newcastle upon Tyne, UK); A.C. Aplin		Land Contamination and Reclamation, Vol 11 No 2, p 239-244, 2003
Mine:	Waste Type: AMD	Contaminant(s): sulfate, iron oxide	Technology Type: constructed wetland
Keywords: acid mine drainage, AMD
Abstract: This paper presents 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 sulfate and iron oxide, with precipitation of iron sulfides and buildup of dissolved iron in sediment pore waters. Successful remediation of acid mine drainage requires concomitant reduction of sulfate and iron, which 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.
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