Acid mine drainage (AMD) is a common result of mining activities caused by bacterial oxidation of sulphide minerals (pyrite) that results in sulphate rich waste water. AMD can be treated biologically in the presence of sulphate reducing bacteria (SRB) and organic matter such as ethanol. During this process hydrogen sulphide (H2S) is formed, which can have toxic effects on the methanogenic activity (Koster et al.,1986) as well as on the sulphidogenic bacteria (Okabe et al., 1995). Lens & Hulshoff Pol (2000) showed that at
neutral pH values, free H2S (which is more toxic than HS-), accounts for 50% of total dissolved sulphide, whereas at pH 8 it is only around 10%.
Reference:
Greben, H. 2007. Focus on CSIR research in pollution and waste: High sulphide Concentrations tolerated by sulphate reducing bacteria. 2007 Stockholm world water week, 13-17 August 2007, 2 p.hide
Greben, H. (2007). Focus on CSIR research in pollution and waste: High sulphide Concentrations tolerated by sulphate reducing bacteria. CSIR Natural Resources and the Environment 2007. http://hdl.handle.net/10204/1114
Greben, H. "Focus on CSIR research in pollution and waste: High sulphide Concentrations tolerated by sulphate reducing bacteria." (2007): http://hdl.handle.net/10204/1114
Greben H, Focus on CSIR research in pollution and waste: High sulphide Concentrations tolerated by sulphate reducing bacteria; CSIR Natural Resources and the Environment 2007; 2007. http://hdl.handle.net/10204/1114 .
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