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장영복,정태영,차기철,정형근,김성헌,김동진,유익근 한국물환경학회 2004 한국물환경학회지 Vol.20 No.4
The characteristics of H₂ production from livestock wastewater were investigated through an anaerobic acid forming process using Clostridium beijerinckii and the photosynthetic process using Rhodobacter sphaeroides. The submerged separation membrane was installed in the acid forming reactor. The photosynthetic process is composed of two reactors(photosynthetic reactor 1 and photosynthetic reactor 2) which is connected continually. The removal rate of COD and the production of volatile fatty acid(VFA) in the acid forming process were approximately 50% and 1000㎎/ L, respectively. The 70% of COD in the effluent of acid forming process was removed through the photosynthetic process. The production of H₂ in the photosynthetic reactor 1 and 2 was 50 and 25mLH₂/gVFA_(COD), respectively. The values of Y in acid forming reactor, photosynthetic reactor 1 and 2 was 0.2263, 0.0601 and 0.0393, respectively. The acetic acid and butyric acid produced in acid forming process were converted to H₂ by photosynthetic bacteria.
분리막 혐기성 반응조를 이용한 하수슬러지로부터의 VFA 생성과 수소생성 가능성 평가
차기철 ( Cha Gi Cheol ),정태영 ( Jeong Tae Yeong ),정형근 ( Jeong Hyeong Geun ) 한국물환경학회 2003 한국물환경학회지 Vol.19 No.6
Characteristics for hydrogen and VFA production (volatile fatty acid) from waste activated sludge was investigated using two stage reactor (acid formation reactor; first stage, photosynthetic reactor; second stage). The acid reactor used Submerged and external separation membrane. The photosynthetic reactor connected with the acid reactor. The COD removal rate in acid formation reactor with submerged and external separation membrane showed about 55% and 75%, respectively. The total VFA produced more in acid reactor with external separation membrane than in acid reactor with submerged separation membrane. The influent COD removal rate per total VFA production rate showed about 11% and 18%, respectively. Hydrogen gas production was not showed in acid reactor but showed in photosynthetic reactor. The hydrogen production per T-VFA in photosynthetic reactor connected with submerged and external separation membrane acid reactor showed about 50.1 ㎖ H₂/g T-VFA and 160.5 ㎖ H₂/g T-VFA, respectively. The Y value in steady state condition of photosynthetic reactor connected with submerged and external separation membrane acid reactor showed about 0.0028 ㎎-biomass ㎎-substrate- and 0.0004㎎-biomass . ㎎-substrate-` , respectively.