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Bench-scale test to selectively recover metals from metal mine drainage using biogenic H2S.

Authors
Hammack-RW; Dovrak-DHHM
Source
Proceedings of the International Land Reclamation and Mine Drainage Conference and Third International Conference on the Abatement of Acidic Drainage, April 24-29, 1994, Pittsburgh, Pennsylvania. Washington, DC: United States Department of the Interior, SP 06D-94, 1994 Apr; 1:214-222
NIOSHTIC No.
10005213
Abstract
Hydrogen sulfide generated by the anaerobic respiration of sulfate-reducing bacteria was used to treat samples of pH 2.2 water from the abandoned Rio Tinto copper mine in Nevada. The untreated water contained 550 mg/L Fe, 140 mg/L Al, 92 mg/L Cu, 76 mg/L Mn, 60 mg/L Zn, 4 mg/L Co, and 2 mg/L Ni. H2S was generated in a bench-scale bioreactor and bubbled into the mine water in three precipitator-clarifier units, where metal sulfide precipitation and recovery took place. The treatment system reduced the concentrations of all metals except Mn to less than 0.1 mg/L. Manganese concentrations were reduced by 96% to 3.3 mg/L. A CuS-S0 concentrate (33% Cu) and a ZnS-S0 concentrate (28% Zn) were produced that may be suitable for metal recovery at existing smelters.
Publication Date
19940401
Document Type
Conference/Symposia Proceedings
Fiscal Year
1994
NTIS Accession No.
NTIS Price
Identifying No.
OP 77-94
NIOSH Division
PRC
Source Name
Proceedings of the International Land Reclamation and Mine Drainage Conference and Third International Conference on the Abatement of Acidic Drainage, April 24-29, 1994, Pittsburgh, Pennsylvania
State
PA
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