Uptake and removal of toxic Cr(VI) by Pseudomonas aeruginosa: physico-chemical and biological evaluation

作者：Chatterjee Suparna; Ghosh Indranil; Mukherjea Kalyan K^*

来源：Current Science, 2011, 101(5): 645-652.

• Bioremediation
• metal adsorption
• Pseudomonas aeruginosa
• tannery effluents

The present study evaluates the biosorption of Cr(VI) by Pseudomonas aeruginosa from synthetic solution and tannery effluents. The absorption was studied under different initial Cr(VI) concentrations at different pH values and in the presence of other metals. The Cr(VI) concentration in the effluent, sludge and soil of tannery industries was measured. A maximum absorption was found at 30 mg/l of Cr(VI) at pH 8, which decreased in the presence of cadmium. Cyclic voltammogram confirmed the reduction of Cr(VI). FTIR analysis showed that the carboxyl and amino groups on the bacterial surface bind chromium. SEM and EDX revealed that Cr(VI) is reduced to Cr(III).

• 出版日期2011-9-10