Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Optimization of Bioelectrochemical Anaerobic Digestion Process Using Response Surface Methodology

반응표면분석법을 활용한 생물전기화학적 혐기성 소화 공정의 최적화

  • LEE, CHAE-YOUNG (Department of Civil Eng., The University of Suwon, Institute River Environmental Technology) ;
  • CHOI, JAE-MIN (Department of Civil Eng., The University of Suwon, Institute River Environmental Technology) ;
  • HAN, SUN-KI (Department of Environ. Health, Korea National Open University)
  • 이채영 (수원대학교 토목공학과.하천환경기술연구소) ;
  • 최재민 (수원대학교 토목공학과.하천환경기술연구소) ;
  • 한선기 (한국방송통신대학교 환경보건학과)
  • Received : 2015.08.12
  • Accepted : 2015.10.30
  • Published : 2015.10.30
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Abstract

This study was performed to optimize the integrated anaerobic digestion (AD) and microbial electrolysis cells (MECs) for the enhanced hydrogen production. The optimum operational conditions of integrated AD and MECs were obtained using response surface methodology. The optimum substrate concentration and operational pH were 10 g/L and 6.8, respectively. In the confirm test, 1.43 mol $H_2/mol$ hexose was achieved, which was 2.5 times higher than only AD. After 40 to 60 hour at seeding, the volatile fatty acids (VFAs) in reactor of AD were not changed. However the VFAs of reactor of AD-MECs were reduced by 61.3% (acetate: 76.4%, butyrate: 50.0%, lactate: 55.0%).

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