Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Silicate treatment for acid mine drainage prevention : silicate and alumina/silica gel treatment of coal refuse for the prevention of acid mine drainage /
CORP Author Tyco Laboratories.
Publisher [Environmental Protection Agency, Water Quality Office],
Year Published 1971
Report Number EPA/14010-DLI-02/71; DI-14-12-560; EPA-WQO-14010-DLI; 07052,
Stock Number PB-198 427
OCLC Number 00195846
Subjects Acid mine drainage--United States. ; Coal mine waste--United States. ; Gelation. ; Silicates.
Additional Subjects ( Water pollution ; Mine waters) ; ( Coal mines ; Water pollution) ; Neutralization ; Coatings ; Refuse ; Surface water runoff ; Gels ; Sodium silicates ; Weathering ; Rubble ; Mine acid drainage ; Water pollution control ; Coal mine refuse
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 14010-DLI-02-71 Headquarters Library/Washington,DC 06/23/2014
EJBD  EPA 14010-DLI-02/71 Headquarters Library/Washington,DC 04/10/2015
ELBD RPS EPA 14010-DLI-02-71 repository copy AWBERC Library/Cincinnati,OH 05/21/2019
NTIS  PB-198 427 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation x, 94 pages : illustrations ; 28 cm.
A treatment technique has been demonstrated on a laboratory scale which inhibits or prevents the generation of acid mine water from waste coal refuse. Three variations of the general method were considered: Neutralization of the water-accessible refuse with a dilute solution of sodium silicate (waterglass); development of a continuous gel on the refuse surface structure which sealed off the entire pile from natural runoff waters; development within the pile structure of a continuous silica/aluminia gel to eliminate percolation through the refuse and minimize the effect of natural erosion of the gel structure. Comparison of the effluent water with an untreated pile shows that the neutralized pile was effective for a minimum of 120 in. of equivalent rainfall in inhibiting AMD generation. The surface gel was effective for a longer period of time. The most effective treatment utilized a mixed alumina/silica gel formed within the pile at depths up to 6 in. This method was effective for more than 500 in. of equivalent rainfall, the duration of the test, and appeared to be exceptionally stable at that time. The weathering resistance of the treatment methods was evaluated by heating the gel treated refuse in the laboratory and exposing it to rain, snow, and freeze-thaw cycles outdoors. (Author)
"14010 DLI 02/71." Prepared for the Environmental Protection Agency, Water Quality Office under contract no. 14-12-560. Includes bibliographical references.