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Summary: Electrochemical Stimulation of
Microbial Perchlorate Reduction
J . C A M E R O N T H R A S H ,
J . I A N V A N T R U M P , K A R R I E A . W E B E R ,
E L I S A B E T H M I L L E R ,
L A U R I E A . A C H E N B A C H , A N D
J O H N D . C O A T E S * , , §
Department of Plant and Microbial Biology,
University of California, Berkeley, California 94720,
Department of Microbiology, Southern Illinois University,
Carbondale, Illinois 62901, and Earth Sciences Division,
Ernest Orlando Lawrence Berkeley National Laboratory,
Berkeley, California 94720
As part of our studies into the diversity of dissimilatory
perchlorate reducing bacteria (DPRB) we investigated the
reduction of perchlorate in the cathodic chamber of a
bioelectrical reactor (BER). Our results demonstrated that
washed cells of Dechloromonas and Azospira species
readily reduced 90 mg L-1 perchlorate in the BER with 2,6-
anthraquinone disulfonate (AQDS) as a mediator. No
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