Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Bactericidal Control of Acid Problems in Surface Mines and Coal Refuse.

Authors
Kleinmann-RLP
Source
Symp on Surface Min Hyd Sedim and Reclam Lexington Kentucky 1980 Dec; :333-337
Link
NIOSHTIC No.
10004060
Abstract
A bacterium thiobacillus ferroxidans, accelerates acidification of pyritic material and significantly increases the eventual level of acid production by catalyzing pyrite oxidation in the zone of aeration. Bactericides can be effective in reducing acid formation if added to infiltrating precipitation. However, the bactericidal treatment must be repeated frequently to prevent repopulation. To accomplish this at low cost, the Bureau of Mines developed a controlled release technique involving diffusion and dissolution of anionic detergents from pellets of an elastomeric matrix. Release is expected to continue for approximately 5 yr after application of the pellets. The technique was tested in the laboratory, on small coal refuse piles in central Pennsylvania, and on hydrologically isolated sections of an abandoned surface mine in northern west Virginia. Detergent concentrations of approximately 25 ppm in the pyritic material delayed or prevented acidification of coal refuse and reduced acidity of drainage from acid-producing material by 50% to 95%.
Publication Date
19801201
Document Type
OP;
Fiscal Year
1981
NTIS Accession No.
NTIS Price
Identifying No.
OP 104-84
NIOSH Division
PRC;
Source Name
Symp. on Surface Min. Hyd., Sedim. and Reclam, Lexington, Kentucky, Dec. 1- 5, 1980, PP. 333-337
State
KY; PA; WV;
TOP