title: The impact of anode acclimation strategy on microbial electrolysis cell treating hydrogen fermentation effluent.
abstract: The impact of different anode acclimation methods for enhancing hydrogen production in microbial electrolysis cell (MEC) was investigated in this study. The anodes were first acclimated in microbial fuel cells using acetate, butyrate and corn stalk fermentation effluent (CSFE) as substrate before moving into MECs, respectively. Subsequently, CSFE was used as feedstock in all the three MECs. The maximum hydrogen yield with the anode pre-acclimated with butyrate (5.21±0.24L H2/L CSFE) was higher than that pre-acclimated with acetate (4.22±0.19L H2/L CSFE) and CSFE (4.55±0.14L H2/L CSFE). The current density (480±11A/m3) and hydrogen production rate (4.52±0.13m3/m3/d) with the anode pre-acclimated with butyrate were also higher that another two reactors. These results demonstrated that the anode biofilm pre-acclimated with butyrate has significant advantages in CSFE treatment and could improve the performance of hydrogen production in MEC.
authors.affiliation: Department of Environmental Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark.
authors.forename: Xiaohu
authors.initials: X
authors.lastname: Li
authors.affiliation: School of Information Engineering, Zhengzhou University, Zhengzhou 450052, PR China.
authors.forename: Ruizhe
authors.initials: R
authors.lastname: Zhang
authors.affiliation: College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China.
authors.forename: Yawei
authors.initials: Y
authors.lastname: Qian
authors.affiliation: Department of Environmental Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark.
authors.forename: Irini
authors.initials: I
authors.lastname: Angelidaki
authors.affiliation: Department of Environmental Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark. Electronic address: yifz@env.dtu.dk.
authors.forename: Yifeng
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000064:Acclimatization; D001674:Bioelectric Energy Sources; D004566:Electrodes; D004572:Electrolysis; D005285:Fermentation; D006859:Hydrogen
chemical_list: D006859:Hydrogen
keywords: Acetate; Butyrate; Corn stalk fermentation effluent; Hydrogen; Microbial electrolysis cell (MEC); Pre-acclimation