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학술발표회초록보기

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  • 09월 05일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제120회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Aerobic Carbon Monoxide Dehydrogenase Immobilized on Electrode for Dissolved Carbon Monoxide Concentration Monitoring

등록일
2017년 8월 31일 16시 54분 00초
접수번호
2456
발표코드
ENVR.P-526 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 19일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Environmental Energy
저자 및
공동저자
STACY REGINALD*, Yoo Seok Lee1, Hyeryeong Lee1
SCHOOL OF EARTH SCIENCE AND ENVIRONMENTAL ENGINEER, GRADUATE STUDENT GWANGJU INSTITUTE OF SCIENCE AND , Malaysia
1Division of Environmental Engineering, Gwangju Institute of Science and Technology, Korea
Syngas fermentation is a promising technology for producing bioethanol from lignocellulosic biomass. However, this technology faces several challenges, with substrate inhibition and gas-to-liquid mass transfer limitation due to low solubility of syngas components particularly carbon monoxide in the fermentation broth represent the major bottlenecks. The optimal dissolved carbon monoxide concentration in fermentation process is crucial because several microorganisms such as ‘acetogens’ that grow chemoautotrophically on carbon monoxide are inhibited by high dissolved carbon monoxide concentration. The aim of this study is to develop an enzyme-based biosensor for dissolved carbon monoxide monitoring which is essential for enhancing gas-to-liquid mass transfer and overcome substrate inhibition in syngas fermentation process. Carbon monoxide dehydrogenase-based biosensor is proposed for determination of dissolved carbon monoxide concentration. Carbon monoxide dehydrogenase (CODH) from the aerobic carbon monoxide utilizing carboxidotrophic eubacterium, Hydrogenophaga pseudoflava, unlike CODH from other aerobic carboxidobacteria produce catalytically fully competent CODH under heterotrophic condition. CODH from Hydrogenophaga pseudoflava is immobilized on electrode which was firstly proposed to monitor dissolved carbon monoxide. The electrochemical behaviors and electrocatalytic performance of this enzyme-based biosensor towards dissolved carbon monoxide could be used to monitor dissolved carbon monoxide concentration that will be vital for understanding, predicting and optimizing syngas fermentation process.

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