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Investigation of Microbially Induced Permeability Loss During In- situ Leaching.

Authors
Brierley-CL; Brierley-JA
Source
NTIS: PB/83-205534 :71 pages
Link
NIOSHTIC No.
10002894
Abstract
Accumulations of microorganisms in the in situ leaching environment are believed responsible for plugging of the ore body and thus decreasing uranium extraction. To assess the contribution of microbial growth to this problem, packed columns of ore and core specimens were leached in the laboratory. Samples collected at four in situ uranium mining operations revealed pseudomonads, xanthomonads, bacillus sp. and micrococcus sp. These microorganisms, inoculated into simulated leaching conditions, decreased permeability in two uranium ores by one order of magnitude in 20 days. Hydrogen peroxide alleviated microbial plugging in the laboratory. Periodic injection of hydrogen peroxide through the production well into the ore body may reduce microbial plugging problems in the field.
Publication Date
19820101
Document Type
CP; Final Contract Report;
Fiscal Year
1982
NTIS Accession No.
PB83-205534
NTIS Price
A05
Identifying No.
OFR 90-83
NIOSH Division
TCRC;
Source Name
NTIS: PB/83-205534
State
NM;
Performing Organization
New Mexico, Inst. of Mining & Tech.
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