Abstract
Bioleaching is an environmental friendly technology with many potential advantages such as few pollution and low energy requirement. The factors which affected the silicate-dissolving ability of Bacillus mucilaginosus Lv1-2on illite were investigated. The results showed that the optimum inoculum amount was 2%.The best carbon source and nitrogen source were glucose and (NH4)2SO4respectively. The silicon dissolution increased with the powder diameter decreased. The optimal temperature and shaking speed were 30°C and 220 rpm. The proper conditions were consistent with that of the growth of the strain,which confirmed that the strain played an important role in bioleaching.
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