title: Hydrogen production in microbial reverse-electrodialysis electrolysis cells using a substrate without buffer solution.
abstract: The aim of this work was to use substrate without buffer solution in a microbial reverse-electrodialysis electrolysis cell (MREC) for hydrogen production under continuous flow condition (10 cell pairs of RED stacks, HRT=5, 7.5, and 15h). Decreasing in the HRT (increasing in the organic matter) made cell current stable and increased. Hydrogen gas was produced at a rate of 0.61m(3)-H2/m(3)-Van/d in H-MREC, with a COD removal efficiency of 81% (1.55g/L/d) and a Coulombic efficiency of 41%. This MREC system without buffer solution could successfully produce hydrogen gas at a consistent rate.
authors.affiliation: Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea.
authors.forename: Young-Hyun
authors.initials: YH
authors.lastname: Song
authors.affiliation: Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea.
authors.forename: Syarif
authors.initials: S
authors.lastname: Hidayat
authors.affiliation: Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea; Jeju Global Research Center, Korea Institute of Energy Research, 200, Haemajihaean-ro, Gujwa-eup, Jeju Special Self-Govenrning Province 695-971, Republic of Korea.
authors.forename: Han-Ki
authors.initials: HK
authors.lastname: Kim
authors.affiliation: Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea. Electronic address: jooypark@hanyang.ac.kr.
authors.forename: Joo-Yang
authors.initials: JY
authors.lastname: Park
mesh_terms: D001674:Bioelectric Energy Sources; D002021:Buffers; D004560:Electricity; D004566:Electrodes; D004572:Electrolysis / Q000295:instrumentation* / Q000379:methods*; D006859:Hydrogen / Q000378:metabolism*; D012996:Solutions; D013997:Time Factors
chemical_list: D002021:Buffers; D012996:Solutions; D006859:Hydrogen
keywords: Exoelectrogen; Hydrogen; Microbial reverse-electrodialysis electrolysis cell; Phosphate buffer solution; Sustainable energy