Anaerobic Oxidation of Dissolved Hydrogen Sulfide in Continuous Culture of the Phototrophic Bacterium Prosthecochloris aestuarii

概要

論文の詳細を見る
The anaerobic oxidation of dissolved H_2S to elemental sulfur was studied at 23℃ and pH 6.5±0.3 in continuous culture of the phototrophic green sulfur bacterium Prosthecochloris aestuarii. The number of cells formed in the cultures was proportional to the amount of H_2S oxidized, and the growth yield was independent of light intensity. The specific growth rate was significantly dependetn on the dissolved H_2S concentration and light intensity. The kinetic data were analyzed with a rate expression as a function of each rate-limiting factor. Under illumination by white fluorescent lamps, the specific oxidation rate of P.aestuarii reached a maximum of 2.02×10^<-14> mol-H_2S・h^<-1>.cell^<-1> when the the dissolved H_2S concentration was 2.1 mM at 5000 lx. Simultaneous use of near infrared LED (light-emitting diode) and white fluorescent lamps provided a 35% increase in the maximum specific H_2S oxidation rate.
公益社団法人日本生物工学会の論文
2000-03-25