Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title The effects of various gas atmospheres on the oxidation of coal mine pyrites /
Author Robins, John D.
Other Authors
Author Title of a Work
Troy, Joseph C.
CORP Author NUS Corporation. Cyrus Wm. Rice Division.
Publisher [Environmental Protection Agency, Water Quality Office],
Year Published 1971
Report Number W7200081; EPAWQO-14010-ECC-08/71
OCLC Number 00215035
Subjects Acid mine drainage. ; Pyrites. ; Oxidation.
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 14010-ECC-08/71 Headquarters Library/Washington,DC 03/17/2014
EJBD  EPA 14010-ECC-08/71 Headquarters Library/Washington,DC 04/10/2015
EKAD  14010ECC08/71 Region 4 Library/Atlanta,GA 08/16/2002
EKAD  TD899.M5N2 Region 4 Library/Atlanta,GA 08/16/2002
ELBD RPS EPA 14010-ECC-08-71 repository copy AWBERC Library/Cincinnati,OH 05/21/2019
ELBD  EPA 14010-ECC-08-71 AWBERC Library/Cincinnati,OH 08/26/2020
Collation xiv, 140 pages : illustrations ; 28 cm.
"14010 ECC 08/71." Prepared for the Environmental Protection Agency under contract 14-12-877. Includes bibliographical references.
Contents Notes
Experiments up to 150 days in length were conducted to study the acid production rate of coal mine pyrites under various gas atmospheres. The gas atmospheres studied were air, nitrogen, methane, and carbon dioxide. The lower limits of the oxidation process were studied by introducing small amounts of oxygen along with the inert blanketing gas and by studying the effects of deaerated versus air saturated feedwater. Acid production was proportional to the available oxygen partial pressure. The acid parameters monitored continued to change and had not completely reached a steady state by the termination of the work. The acid production of nitrogen blanketed pyrite decreased to less than 1% of that of identical columns under air atmosphere. Nitrogen and methane gases were equally effective in reducing acid production. Both of these gases were slightly more effective than carbon dioxide. A large amount of detailed experimental data is presented.