한빛사논문
- 조회319
Hyung-Sool Leea, Wang Xinb, Ranaprathap Katakojwalac, S.Venkata Mohanc, Noori M.D. Tabishd
aKENTECH Institute for Environmental and Climate Technology, Korea Institute of Energy Technology (KENTECH) 200 Hyeoksin-ro, Naju-si, Jeollanam-do, Republic of Korea
bMOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
cBioengineering and Environmental Engineering Lab, Department of Energy and Environmental Engineering, Indian Institute of Chemical Technology, Hyderabad 500007, India
dDepartment of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcala, Alcala De Henares, Madrid 28801, Spain
Corresponding author: Hyung-Sool Lee
Abstract
To assess biohydrogen for future green energy, this review revisited dark fermentation and microbial electrolysis cells (MECs). Hydrogen evolution rate in mesophilic dark fermentation is as high as 192 m3 H2/m3-d, however hydrogen yield is limited. MECs are ideal for improving hydrogen yield from carboxylate accumulated from dark fermentation, whereas hydrogen production rate is too slow in MECs. Hence, improving anode kinetic is very important for realizing MEC biohydrogen. Intracellular electron transfer (IET) and extracellular electron transfer (EET) can limit current density in MECs, which is proportional to hydrogen evolution rate. EET does not limit current density once electrically conductive biofilms are formed on anodes, potentially producing 300 A/m2. Hence, IET kinetics mainly govern current density in MECs. Among parameters associated with IET kinetic, population of anode-respiring bacteria in anode biofilms, biofilm density of active microorganisms, biofilm thickness, and alkalinity are critical for current density.
논문정보
- Review Paper
- 2022년 11월 (BRIC 등록일 2023-01-09)
- 국내(교신)+국외 연구진
- 생명과학 > 생물공학
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