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Arsenic removal from mining waste waters using sulfate-reducing bacteria in a 2 stage bioreactor.
Belin-DD; Dinsdale-BE; Altringer-PB
Biohydrometallurgical technologies: fossil energy materials, bioremediation, microbial physiology: Proceedings of an International Biohydrometallurgy Symposium, August 22-25, 1993, Jackson Hole, Wyoming, USA. Torma AE, Apel ML, Brierley CL, eds. Warrendale, PA: Minerals, Metals and Materials Society, 1993 Sep; 2:613-620
The U.S. Bureau of Mines Salt Lake City Research Center, is investigating biological decontamination of arsenic-bearing mining and milling waste waters. Research is focusing on bacterial conversion of soluble arsenic complexes to insoluble arsenic sulfide compounds. This report describes initial laboratory results using sulfate-reducing bacteria (SRB) in a 2-stage process. SRB-generated sulfides from the stage-1 bioreactor precipitate arsenic from waste water in the stage-2 treatment reactor. Results are presented on (1) optimizing bacterial sulfide production in the bioreactor, and (2) removing arsenic from samples of industrial waste waters in stage 2. Promising exploratory results may lead to a practical biological process for arsenic removal from contaminated water.
Waste treatment; Mining industry; Heavy metals; Bacteria
U.S. Bureau of Mines, Salt Lake City Research Center, 729 Arapeen Drive, Salt Lake City, Utah 84108
Torma-AE; Apel-ML; Brierley-CL
Biohydrometallurgical technologies: fossil energy materials, bioremediation, microbial physiology: Proceedings of an International Biohydrometallurgy Symposium, August 22-25, 1993, Jackson Hole, Wyoming, USA
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division