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OLS Field Name OLS Field Data
Main Title Mine Waste Technology Program: Electrochemical Tailings Cover.
Author D. JORDAN
CORP Author MSE Technology Applications, Inc., Butte, MT.; Department of Energy, Cincinnati, OH. Environmental Management Consolidated Business Center.; National Risk Management Research Lab., Cincinnati, OH.
Year Published 2008
Report Number DE-AC09-96EW96405; EPA/600/R-08/095
Stock Number PB2009-100862
Additional Subjects Mine wastes ; Acid mine drainage ; Electrochemistry ; Sulfides ; Oxidation ; Mine Waste Technology Program(MWTP)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB2009-100862 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 04/28/2010
Collation 62p
Abstract This report summarizes the results of Mine Waste Technology Program (MWTP) Activity III, Project 40, Electrochemical Tailings Cover, funded by the U.S. Environmental Protection Agency (EPA) and jointly administered by EPA and the U.S. Department of Energy (DOE). MSE Technology Applications, Inc. implemented the technology demonstration for EPA and DOE. This project addressed EPAs technical issue of Mobile Toxic Constituents Water and Acid Generation. The objective of Project 40 was to demonstrate the effectiveness of an electrochemical enhancement of conventional soil covers to inhibit the oxidation of sulfide minerals in mine waste to control generation of acid mine drainage. ENPAR Technologies, Inc. of Guelph Ontario, Canada, was the technology provider for trademarked electrochemical cover AmdEITM, which is an alternative to conventional earthen covers for decommissioning and long-term management of deposits of mill tailings and mine waste rock containing acid-generating sulfide minerals. This demonstration showed evidence that the electrochemical tailings cover could reduce the oxidation of sulfide minerals in sulfide-containing mine waste. The reduction in oxidation of sulfur in the tailings was best shown by the post-test ABA analysis. The electrochemically treated cells retain total sulfur and pyritic sulfur at significantly higher levels than in the control cells that had no special treatment. In fact, treatment cell T2 retained over 90% of its original sulfur content. Nearly 50% of the sulfur was retained in the other treatment cell, T1; however, there was a large degree of variation in the initial sulfur data for this treatment cell, which seemed somewhat suspect due to high total sulfur content when compared to the three other test cells. Interestingly, both cells with the electrochemical treatment retained about 4.5% total sulfur while the untreated cells contained less than 0.05% sulfur at the conclusion of the demonstration. It is apparent that the sulfur was readily oxidized and leached away from the top few inches of tailings in the untreated control cells since initial total sulfur in the cells ranged from 4.78% to 9.44%.
Supplementary Notes Sponsored by Department of Energy, Cincinnati, OH. Environmental Management Consolidated Business Center. and National Risk Management Research Lab., Cincinnati, OH.
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PUB Date Free Form Jul 2008
Category Codes 48A; 68; 99F
NTIS Prices PC A05
Document Type NT
Cataloging Source NTIS/MT
Control Number 010500240
Origin NTIS
Type CAT