• Title/Summary/Keyword: Immobilized-cell acidogenic reactor

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A Study on the Use of an Immobilized-Cell Acidogenic Reactor for the High Rate Digestion of a Distillery Wastewater (유기산 생산 세균을 고정화학 2상 메탄발효조에 의한 주정 폐수의 고효율 소화)

  • 배재근;고종호;김병홍
    • Microbiology and Biotechnology Letters
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    • v.22 no.4
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    • pp.407-414
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    • 1994
  • Anaerobic fermentative bacteria were isolated from the acidogenic reactor of a labora- tory scale 2-stage anaerobic digestor. The isolate 1-6 was selected for its ablity to produce more fatty acids from distillery wastewater than others, and was identified as a strain of Clostridium. The isolate Clostridium sp. 1-6 is a thermophilic bacterium growing at 55$\circ$c , and grew best at pH 5.5. An acidogenic reactor using immobilized cells of the isolate Clostridium sp. 1-6 removed about 15% of COD from distillery wastwater as hydrogen, producing about 50 mM butyrate and about 10 mM acetate, when the reactor was operated at the hydraulic retention time(HRT) of 0.8 hr. It is proposed that this system can be used to convert the distillery wastewater to hydrogen and butyrate. More than 90% of COD was removed from the wastewater by anaerobic digestion using a 2-stage digestor consisting of a UASB methanogenic reactor and an acidogenic reactor of the immobilized cells of isolate Clostridium sp. 1-6.

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