Effects of cover materials on leaching of constituents from dolomitic lead mine tailings

Water, Air, & Soil Pollution
By: , and 

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Abstract

Five raised-bed test plots were used to study the effects of cover materials on the leaching of constituents from dolomitic Pb mine tailings over a 2-yr period. The cover materials studied were a fertilizer and seed mixture, anaerobically digested sewage sludge, loam and sod, and fallen leaves from silver maples (Acer Saccharinum); one plot was not covered. Fresh leachates and receiving pool waters were analyzed for ten metals, Si, P, inorganic anions, filterable organic carbon (FOC), and alkalinity. The mixture of fertilizer and seed decreased leaching of Pb and Zn during the first year. The leaf cover increased leaching of Pb during both years; this effect decreased as the leaves weathered. Sludge caused some increase in Pb leaching during the first year, and increased Cd leaching during both years. Concentrations of most leachate constituents decreased, and pH increased in the receiving pools. Concentrations of Pb remained higher in the receiving pool for the leaf-covered plot than in the other pools. Increases in leaching of Pb and Cd with a sludge cover were moderate, and the ability of the material to support plant growth on the tailings suggested that it may be a good medium for inducing growth of vegetative cover on the dolomitic tailings. Other organic materials may cause pronounced increase in the concentration of toxic trace metals in leachate from the tailings.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Effects of cover materials on leaching of constituents from dolomitic lead mine tailings
Series title Water, Air, & Soil Pollution
DOI 10.1007/BF00176865
Volume 34
Issue 1
Year Published 1987
Language English
Publisher Springer
Contributing office(s) Columbia Environmental Research Center
Description 13 p.
First page 31
Last page 43
Country United States
State Missouri
City Desloge
Other Geospatial Big River watershed