||Acid mine drainage formation and abatement.
||Ohio State University. Research Foundation.
|| [Environmental Protection Agency, Water Quality Office],
||EPA DAST 42; EPA-14010-FPR; 08591,; 14010-FPR-04/71
Acid mine drainage. ;
( Water pollution ;
Mine waters) ;
( Pyrite ;
Mine waters) ;
Mathematical models ;
Chemical reactions ;
Oxidation reduction reactions ;
Mine acid drainage ;
Water pollution control
||PB 199 835
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||v, 82 pages : illustrations ; 28 cm.
The report pertains to at-source control of pyrite oxidation. The current level of knowledge of acid mine drainage formation is critically reviewed, with emphasis on reaction kinetics and reactant and product transport. A reaction system model is developed which provides a conceptual framework for subsequent discussion dealing specifically with the physical, chemical, and biological characteristics of pyritic systems encountered in mining situations. Practical considerations of at-source control of acid mine drainage formation in underground mines, spoil banks, and refuse piles are presented. Deficiencies in current knowledge include: Descriptions of the physical environment existing at pyrite oxidation sites in natural systems are far more incomplete that the current understanding of pyrite oxidation kinetics; Oxygen transport is poorly described at this time, but is probably the rate-controlling factor in most instances; Serious questions exist as to the effectiveness of air-sealing techniques as currently practiced; The significance of bacterial catalysis of pyrite oxidation under field conditions has not been established. (Author)
"14010 FPR 04/71." "DAST-42." Prepared for the Environmental Protection Agency, Water Quality Office. Includes bibliographical references. Microfiche.