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土壤圈(英文版). 1997, (02)

Iron Phosphate Coating: A Novel Approach to Controlling Pyrite OxidationEnglish Full Text

HUANG XIAO and V. P. EVANGELOU(Nanjing Agricultural University, Nanjing 210095(China))(University of Kentucky, Lexington, KY 40549 (USA))

Abstract: A novel coating technique was developed for controlling Pyrite oxidation. The technique invo1ved leachingpyrite particles with a solution containing low concentrations of phosphate and hydrogen peroxide. Duringthe leaching process, the iron released from pyrite by hydrogen proxide was precipitated by phosphate as aferric phosphate coating. This coating was shown to be able to effectively prevent Pyrite from oxidation and itcould be established at the expense of only surface portions of Pyrite. The emergence of this technique couldprovide a unique potential route for abating acid mine drainage and reclaiming sulfide-containing degradedmining land.
Keywords：

acid mine drainage; coating; pyrite;

  • Series：

    (D) Agriculture; (A) Mathematics/ Physics/ Mechanics/ Astronomy

  • Subject：

    Physical Geography and Topography; Fundamental Science of Agriculture; Agronomy

  • Classification Code：

    S155

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