Pedosphere 7(2): 103--110, 1997
ISSN 1002-0160/CN 32-1315/P
©1997 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Iron phosphate coating: A novel approach to controlling pyrite oxidation |
| HUANG Xiao1 and V. P. EVANGELOU2 |
1 Nanjing Agricultural University, Nanjing 210095 (China);
2 University of Kentucky, Lexington, KY 40549 (USA) |
| ABSTRACT |
| A novel coating technique was developed for controlling pyrite oxidation. The technique involved leaching pyrite particles with a solution containing low concentrations of phosphate and hydrogen peroxide. During the leaching process, the iron released from pyrite by hydrogen proxide was precipitated by phosphate as a ferric phosphate coating. This coating was shown to be able to effectively prevent pyrite from oxidation and it could be established at the expense of only surface portions of pyrite. The emergence of this technique could provide a unique potential route for abating acid mine drainage and reclaiming sulfide-containing degraded mining land. |
| Key Words: acid mine drainage, coating, pyrite |
| Citation: Huang, X. and Evangelou, V. P. 1997. Iron phosphate coating: A novel approach to controlling pyrite oxidation. Pedosphere. 7(2): 103-110. |
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