Glucose와 Yeast Extract를 이용하여 배양된 유산균을 이용한 하수 일차 슬러지의 가용화
분야
자연과학 > 생물
저자
이상민 ( Sang Min Lee ) , 최한나 ( Han Na Choi ) , 신정훈 ( Jung Hun Shin ) , 이은영 ( Eun Young Lee )
발행기관
한국미생물생명공학회(구 한국산업미생물학회)
간행물정보
한국미생물·생명공학회지 2012년, 제40권 제4호, 424~429페이지(총6페이지)
파일형식
05212157.pdf [무료 PDF 뷰어 다운로드]
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    영문초록
    The intention of this research was to investigate the solubilization of primary sewage sludge using lactic acid bacteria cultured in a glucose and yeast extract medium. Glucose as the carbon source and yeast extract as the source of nitrogen were chosen as an economic medium with the potential for the mass production of lactic acid bacteria. The optimal concentrations of the medium were 3% (w/v) glucose and 2% (w/v) yeast extract. In this study, in order to improve field applications for the solubilization of sludge at sewage treatment plants, a powdered form of lactic acid bacteria was produced. The optimal inoculum of the powder for the maximum efficiency of solubilization was 1% (w/v). In that condition, the SCOD value increased from 8600 (mg/L) at the beginning of experiment to 10290 (mg/L) at 96 h, with the highest solubilization rate (20.6% DDCOD) and 11.2% (SCOD). Also, the TVFAs of the lactic acid bacteria inoculation group were produced more than that of the control group. In particular, acetic acid was produced 5 times more in the experimental group than in the control group. In this research, the potential of lactic acid bacteria in the pretreatment of primary sewage sludge as a solubilizer, and as an energy source producer for microbial fuel cells was revealed.
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