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Full-scale Field Trials of a Bactericidal Treatment to Control Acid Mine Drainage.

Authors
Kleinmann-RLP; Erickson-PM
Source
Pres Annu Mtg Geol Soc Am New Orleans Louisiana Oct 1982 1982 Oct; 14(7):531-532
Link
NIOSHTIC No.
10004068
Abstract
Sodium lauryl sulfate (sls) is one of several anionic detergents known to be effective in inhibiting the iron-oxidizing bacterium, thiobacillus ferrooxidans. Since t. Ferrooxidans plays a critical role in determining the rate of pyrite oxidation, the Bureau of Mines investigated the use of sls as a method to control the formation of acid mine drainage. In previously reported pilot-scale tests, the detergent successfully controlled t. Ferrooxidans and thereby reduced acid production 60 to 90 pct. During 1982, the Bureau conducted five full-scale field trials at active and abandoned surface mines and coal refuse piles. The first of these tests was at a 10-acre inactive refuse pile near Beckley, West Virginia. After a 3-month lag period, average acidity decreased from 900 mg/l to 350 mg/l and iron decreased from over 100 mg/l to 2 mg/l. An 8-acre active section of a large refuse pile was treated similarly; acidity and sulfate decreased from over 4,000 mg/l to less than 100 mg/l and iron decreased from 1,000 mg/l to 2 mg/l or less. At both sites, a single application was effective for about 4 months. Other field tests have been conducted at active and abandoned surface mines in Ohio and West Virginia.
Publication Date
19821001
Document Type
OP;
Fiscal Year
1983
NTIS Accession No.
NTIS Price
Identifying No.
OP 107-84
Issue of Publication
7
NIOSH Division
PRC;
Source Name
Pres. Annu. Mtg., Geol. Soc. Am., New Orleans, Louisiana, Oct. 1982, V. 14, No. 7, PP. 531-532
State
LA; OH; WV;
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