Isolation of Dye Decolorization Bacteria and the Study on the Conditions of Dyes Decolorization

A bacterium which had the ability of decoloration on Malachite Green was isolated from Zhenjiang printworks and was identified as Pseudomonas aeruginosa. The effects of concentration of the dye concentration, cultural time, cultural temperature and initial pH of cultural medium on the efficiency of decoloration were investigated. The result shows that the optimal cultural conditions was: dye concentration was 50mg·l-1, cultural time was 72h, cultural temperature was 28°C, initial pH of cultural medium was 7.0.