Enhanced chromate reduction by resting Escherichia coli cells in the presence of quinone redox mediators

The reduction of Cr(VI) by resting Escherichia coli cells was significantly enhanced by the quinone redox mediators, lawsone, menadione, anthraquinone-2-sulfonate and anthraquinone-2,6-disulfonate. In the presence of 0.2 mM lawsone, over 97.5% Cr(VI) (100 mg l −1) was reduced in 4 h. The mediated re...

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