Stimulation of Sulfate-Reducing Bacteria in Lake Water from a Former Open-Pit Mine Through Addition of Organic Wastes

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Abstract:

A method to improve water quality in a lake occupying a former open-pit mine was evaluated in a laboratory-scale study. Untreated pit lake water contained high levels of sulfate, iron, and arsenic (1 200, 100, and 5 mg/L, respectively) and was mildly acidic (∼pH 6). Varying amounts of two locally available organic waste products (waste from a potato-processing plant and composted steer manure) were added to pit water and maintained in microcosms under anoxic conditions. In selected microcosms, populations of sulfate-reducing bacteria increased with time; sulfide was generated by sulfate reduction; sulfate, iron, and arsenic concentrations approached zero; and pH approached neutrality. Best results were obtained with intermediate amounts of waste potato skin.

Keywords: ACID; BACTERIA; LAKE; MINE; OPEN-PIT; REDUCTION; REMEDIATION; SULFATE

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/106143098X121806

Publication date: March 1, 1999

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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