Microbial reduction of sulfur dioxide with pretreated sewage sludge and elemental hydrogen as electron donors.
It has been demonstrated tht heat- and alkali-pretreated-sewage sludge may serve as an electron donor and carbon source for SO2 reduction by Desulfovibrio desulfuricans. A continuous D. desulfuricans culture was operated for 6 mo with complete reduction of SO2 to H2S. The culture required only minor amounts of mineral nutrients in addition to pretreated sewage sludge. It has also been shown that the sulfate-reducing bacterium Desulfotomaculum orientis can be grown on H2 as an energy source, CO2 as a carbon source, and SO2 as a terminal electron acceptor. Complete reduction of SO2 to H2S was observed.
Deshmane
V
V
Center for Environmental Research and Technology, University of Tulsa, OK 74104.
Lee
C M
CM
Sublette
K L
KL
D003901:Desulfovibrio / Q000378:metabolism*; D004579:Electron Transport; D006859:Hydrogen / Q000378:metabolism*; D010084:Oxidation-Reduction; D012722:Sewage; D013458:Sulfur Dioxide / Q000378:metabolism*; D016999:Sulfur-Reducing Bacteria / Q000378:metabolism
D012722:Sewage; D013458:Sulfur Dioxide; D006859:Hydrogen