The Effect of Culture Conditions on Microbial Remediation of Contaminated Soil in Antimony Ore Area

With the extensive development of mining and smelting activities, the pollution of antimony (Sb) and arsenic (As) in soil becomes more and more serious, which is highly toxic to public health. In order to deeply understand the characteristics of Sb and As contaminated soil, we analyzed the mineral composition, pollutant content and the occurrence state of pollutants in the collected contaminated soil. The results showed that the main components in the contaminated soil were quartz, mica, calcite and dolomite, and the contents of antimony and arsenic were up to 24,666 and 240 mg/kg respectively, the Sb and As in the soil mainly existed in the residue state. Under different carbon source conditions, SRB can effectively cure antimony in soil, among which ethanol and glycerol are the best. More acidic conditions are more favorable for SRB bacteria to cure antimony and arsenic in soil.