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Prevention of formation of acid drainage from high‐sulfur coal refuse by inhibition of iron‐ and sulfur‐oxidizing microorganisms. II. Inhibition in “run of mine” refuse under simulated field conditions
Author(s) -
Dugan P. R.
Publication year - 1987
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260290108
Subject(s) - sulfur , oxidizing agent , chemistry , sulfuric acid , acid mine drainage , sulfate , pyrite , iron bacteria , lime , coal , humic acid , ferric , sulfate reducing bacteria , benzoic acid , microorganism , inorganic chemistry , environmental chemistry , bacteria , nuclear chemistry , waste management , biochemistry , mineralogy , organic chemistry , metallurgy , geology , materials science , paleontology , fertilizer , engineering
The combination of sodium lauryl sulfate and benzoic acid effectively inhibits iron‐ and sulfur‐oxidizing bacteria in coal refuse and prevents the conversion of iron pyrite to sulfate, ferric iron, and sulfuric acid, thereby significantly reducing the formation of acidic drainage from coal refuse. The inhibitors were effective in a concentration of 1.1 mg/kg refuse, and data indicate that the SLS was in excess of the concentration required. The treatment was compatible with the use of lime for neutralization of acid present prior to inhibition of its formation.