Reactive barrier treatment of groundwater contaminated by acid mine drainage: Sulfur accumulation and sulfide formation
1998 (English)In: Groundwater Quality: Remediation and Protection / [ed] Mike Herbert & Karel Kovar, 1998, 451-457 p.Conference paper (Refereed)
A permeable reactive barrier was installed in August 1995 at the Nickel Rim Mine near Sudbury, Ontario, Canada, for the passive remediation of groundwater contaminated with acid mine drainage. The reactive component of the barrier consists of a mixture of municipal and leaf compost and wood chips; the organic material promotes bacterially-mediated sulphate reduction. Hydrogen sulphide, a product of sulphate reduction, may then complex with aqueous ferrous iron and precipitate as iron sulphide. This study presents the solid phase sulphur chemistry of the reactive wall after two years of operation, and discusses the formation and accumulation of iron sulphide minerals in the reactive material. The results from the solidphase chemical analysis of core samples indicate that there is an accumulation of reduced inorganic sulphur in the reactive wall, with levels reaching 190 umol g"1 (dry weight) by July 1997.
Place, publisher, year, edition, pages
1998. 451-457 p.
, IAHS Series of Proceedings and Reports, 250
Oceanography, Hydrology, Water Resources
IdentifiersURN: urn:nbn:se:uu:diva-45956ISBN: 1-901502-55-4OAI: oai:DiVA.org:uu-45956DiVA: diva2:73864
GQ'98 Conference held at Tübingen, Germany, September 21-25 1998