微波诱变氧化亚铁硫杆菌浸出磷矿粉中可溶性磷

Bioleaching of soluble phosphate from phosphate rock with acidithiobacillus ferrooxidans mutated with microwave

采用微波辐照对氧化亚铁硫杆菌进行诱变,并利用诱变菌在黄铁矿存在条件下从磷矿粉中浸出可溶性磷。结果表明:800 W微波辐照功率条件下(处理4 min),氧化亚铁硫杆菌浸磷的效果较佳,磷的浸出率达12.25%,比原菌提高了52.74%。通过微波诱变可提高氧化亚铁硫杆菌的氧化活性和产酸量,从而增强磷矿粉中可溶性磷的浸出效果。

Bioleaching of soluble phosphate from phosphate rock with acidithiohacillos ferrooxidans mutated with microwave under existing of pyrites was investigated. The results showed that the highest leaching rate of phosphate , 12.25%, which was 52.74% higher than that of phosphate mutated with original acidithiobacillus ferrooxidans, was obtained by leaching with acidithiohaeiUus ferrooxiclans with higher oxidative activity mutated by microwave of 800W for 4 minutes. The oxidative activity and amount of producing acid of acidithiobacillus ferrooxidans could be improved by microwave mutation, and the leaching rate of soluble phosphate from phosphate rock could be increased.