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Copper extraction from a low-grade ore by ferrobacillus ferrooxidans: effect of environmental and nutritional factors.

Authors
Corrick-JD; Sutton-JA
Source
College Park, MD: U.S. Department of the Interior, Bureau of Mines, RI 6714, 1965 Jan; :1-21
Link
NIOSHTIC No.
20036681
Abstract
The environmental and nutritional characteristics necessary for maximum copper extraction from a low-grade ore by Ferrobacillus ferrooxidans have been explored as have many of the limiting parameters. Criteria considered were oxygen consumption, copper extracted, soluble copper concentration, temperature, pH, particle size, nutrients, and other inorganic salt concentrations. A set of environmental and nutritional conditions were developed for E. ferrooxidans which supported cell reproduction and maximum microbial oxidation of a low-grade copper sulfide ore. Percolator tests conducted under these optimum conditions resulted in an 18 percent increase in the quantity of copper microbially extracted over that extracted under conditions considered to be standard. Manometric tests determined those extremes of environmental conditions and nutritional factors which were detrimental to the extraction of copper by E. ferrooxidans.
Keywords
Mineral-processing; Mining-industry; Copper-compounds; Copper-refining
Publication Date
19650101
Document Type
Report of Investigations
Fiscal Year
1965
NTIS Accession No.
NTIS Price
Identifying No.
RI-6714
NIOSH Division
CPRC
Source Name
College Park, MD: U.S. Department of the Interior, Bureau of Mines, RI 6714
State
MD
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