Characterization of Lighted Upflow Anaerobic Sludge Blanket (LUASB) Method under Sulfate-Rich Conditions
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概要
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Growth of phototrophic bacteria was induced from granules in a lighted upflow anaerobic sludge blanket (LUASB) reactor supplied with an organic-acid-based medium containing 141.7 mg S・l^<-1> of SO_4^<2-> under light conditions (100 μE・m^<-2>・s^<-1>). We investigated the population dynamics of phototrophic bacteria in the LUASB reactor and the performance of the LUASB reactor for wastewater treatment and poly-β-hydroxybutyrate (PHB) production under anaerobic light and sulfate-rich conditions. In vivo absorption spectra and a colony count suggested that populations of Rhodopseudomonas palustris and Blastochloris sulfoviridis in the LUASB reactor supplied with a medium containing 574.4 mg S・l^<-1> of SO_4^<2-> under light conditions were lower than those supplied with a medium containing 1.0 or 141.7 mg S・l^<-1> of SO_4^<2-> under parallel conditions. Removal efficiencies of ammonium and phosphate in the LUASB reactor supplied with the medium containing 141.7 mg S・l^<-1> of SO_4^<2-> under light conditions were higher than those under parallel conditions but without illumination. The difference in the results of runs under light or dark conditions suggested that the ammonium and phosphate ion removal efficiencies were improved by increasing the amount of phototrophic bacterial biomass in the LUASB reactor under sulfate-rich conditions. The average PHB production rates of the bacterial cells recovered from the effluent of the LUASB reactor supplied with a medium containing 141.7, 283.5 or 574.4 mg S・l^<-1> of SO_4^<2-> were 1.0-2.9 mg・l^<-1>-reactor・d^<-1> and the average PHB content based on the dry bacterial biomass was 1.4-3.6%.
- 社団法人日本生物工学会の論文
- 2001-02-25
著者
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Sawayama Shigeki
Biomass Technology Research Center (BTRC), National Institute of Advanced Industrial Science and Tec
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Sawayama Shigeki
Biomass Research Group Institute For Energy Utilization National Institute Of Advanced Industrial Sc
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Hanada Satoshi
National Institute Of Advanced Industrial Science And Technology
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YAGISHITA TATSUO
Biomass Division, National Institute for Resources and Environment
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TSUKAHARA KENICHIRO
Biomass Division, National Institute for Resources and Environment
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Hanada Satoshi
National Institute For Bioscience And Human-technology Aist Miti
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Hanada S
Institute For Biological Resources And Functions National Institute Of Advanced Industrial Science A
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Yagishita Tatsuo
Biomass Research Group Institute For Energy Utilization National Institute Of Advanced Industrial Sc
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Tsukahara Kenichiro
Biomass Research Group Institute For Energy Utilization National Institute Of Advanced Industrial Sc
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Hanada Satoshi
National Instisute Of Bioscience And Human-technology
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Sawayama Shigeki
Biomass Division National Institute For Resources And Environment Aist Miti
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