Biogeochemistry of acid mine drainage and a method to control acid formation

被引：0
|
作者：
Kleinmann, R.L.P. [1 ]
Crerar, D.A. [1 ]
Pacelli, R.R. [1 ]
机构：
[1] US Bur. Mines, Pittsburgh Res. Cent., Pittsburgh, Pa., United States
来源：
Mining Engineering | 1981年 / 33卷 / 03期
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摘要：
A bacterium, Thiobacillus ferroxidans, is of prime importance in the formation of acid drainage from pyritic material. Above pH 4. 5, T. ferrooxidans increases initial acidification; below pH 4. 5, it allows acidification to continue bY oxidizing Fe**2** plus . Below a pH of approximately 2. 5, the activity of Fe**3** plus results in steady-state cycling between oxidation of pyrite by Fe**3** plus and bacterial oxidation of Fe**2** plus . Tests demonstrate that inhibition of T. ferroxidans by controlled release of anionic detergents can inexpensively reduce pyrite oxidation and acid formation.
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页码：300 / 312
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