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Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor
Published on: October 15, 2015
Carbon monoxide conversion by anaerobic bioreactor sludges
Jan Sipma1, Piet N L Lens, Alfons J M Stams
1Sub-Department of Environmental Technology, Wageningen University, Bomenweg 2, P.O. Box 8129, 6700 EV Wageningen, The Netherlands. jan.sipma@wur.nl
Abstract:
Seven different anaerobic sludges from wastewater treatment reactors were screened for their ability to convert carbon monoxide (CO) at 30 and 55 degrees C. At 30 degrees C, CO was converted to methane and/or acetate by all tested sludges. Inhibition experiments, using 2-bromoethanesulfonic acid and vancomycine, showed that CO conversion to methane at 30 degrees C occurred via acetate, but not via H2. At 55 degrees C, four sludges originally cultivated at 30-35 degrees C and one sludge cultivated at 55 degrees C converted CO rapidly into hydrogen or into methane. In the latter case, inhibition experiments showed that methane was formed via hydrogen as the intermediate.
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