Paper Title:
Regulation of PCE-Dechlorinating Activity by Electrochemical Cultivation
  Abstract

Tetrachloroethene (PCE) is one of the grave environmental pollutants. Certain anaerobic bacteria have the ability to dechlorinate PCE as an electron acceptor for their respiration (dehalorespiration). Previously, we accumulated PCE-dechlorinating culture in the presence of Fe(III)-EDTA. In this study, we have described the regulation of dehalorespiration by electrolytic control of the Fe(II)/Fe(III) ratio using a potentiostat (electrochemical cultivation). PCE-dechlorinating culture was cultivated under H2 conditions at constant redox potentials ranging from –0.1 to –0.8 V. After electrochemical cultivation for 3 weeks, PCE-dechlorinating activity of the mixed culture varied at different redox potentials. At –0.6 V, the culture showed the highest activity and the highest ratio of Desulfitobacterium/total bacteria. Electrochemical cultivation is a useful method for regulating PCE-dechlorinating bacterium.

  Info
Periodical
Advanced Materials Research (Volumes 20-21)
Edited by
Axel Schippers, Wolfgang Sand, Franz Glombitza and Sabine Willscher
Pages
319-322
DOI
10.4028/www.scientific.net/AMR.20-21.319
Citation
S. Hirano, N. Matsumoto, N. Ohmura, "Regulation of PCE-Dechlorinating Activity by Electrochemical Cultivation", Advanced Materials Research, Vols. 20-21, pp. 319-322, 2007
Online since
July 2007
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Price
$32.00
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