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A PERMEABLE REACTIVE BARRIER (PRB) FOR THE REMOVAL AND IMMOBILIZATION OF SELENIUM IN SEEP WATER AND SHALLOW GROUNDWATER AT A PHOSPHATE MINE IN SOUTHERN IDAHO: RESULTS OF BENCH SCALE TESTING
Walker, W.J., D. Tooke, M. Wright, J. Hamilton, C. Schreier, and J. Peterson.
Journal American Society of Mining and Reclamation 7(3):20-44(2018)

This bench study tested whether a permeable reactive barrier (PRB) could treat Se-contaminated groundwater and seep water from a phosphate mine in Idaho. The study consisted of: (1) a test to determine the chemistry of the site-water and the components of the proposed PRB, (2) batch leaching studies, and (3) vertical column studies testing the PRB media. The groundwater Se was reduced from 1 mg/L, to < 0.02 mg/L in the first 3 hours of column contact time, well below the 0.05 mg/L water quality goal. Aside from Se reduction, no significant deleterious changes to water quality were observed when compared to primary water quality standards. https://www.asmr.us/Portals/0/Documents/Journal/Volume-7-Issue-3/Walker-WA.pdf



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