细菌菌株MS1的铅锌抗性和吸附性能研究

从广东凡口铅锌尾矿分离到1株重金属抗性细菌菌株MS1，该菌株对Pb2+ 和Zn2+的最小抑制浓度分别为4和40 mmol/L.菌株MS1能在17~37 ℃和pH3~13条件下生长，最适生长温度和pH分别为27 ℃和7.菌株MS1对高渗透环境有较强的适应性，最适生长盐度为4%.当Pb2+和Zn2+浓度分别为2和10 mmol/L时，60h内菌株MS1对Pb2+和Zn2+的最大吸附量和最大吸附率分别为13.9、20.0 mg/g和23.3%、25.2%.菌株MS1对Zn2+的吸附能力大于对Pb2+的吸附能力.

Pb and Zn Resistance and Adsorption of Bacterial Strain MS1

A heavy metal-resistance bacterial strain MS1 was isolated from the Fankou Pb-Zn mine tailings in Guangdong Province. The minimum inhibiting concentrations of Pb2+ and Zn2+ to the strain were 4 and 40 mmol/L, respectively. Strain MS1 could grow at temperatures 17 ~37 ℃, pH 3~13 and high salinity conditions, with optimal conditions of temperature 27 ℃, pH 7.0 and 5% salinity. The maximum adsorption quantities and the maximum adsorption rates of strain MS1 to Pb2+ and Zn2+ were 13.9, 20.0 mg/g and 23.3%, 25.2% at 2 mmol/L Pb2+ and 10 mmol/L Zn2+ within 60h, respectively. The adsorption ability of strain MS1 to Zn2+ was greater than Pb2+. In a word, strain MS1 had strong resistance and adsorption ability to Pb2+ and Zn2+, and could be used to remediate heavy metal polluted water.