title: H2production in membraneless bioelectrochemical cells with optimized architecture: The effect of cathode surface area and electrode distance.
abstract: In this work we report on the hydrogen production capacity of single-chamber microbial electrohydrogenesis cell (MEC) with optimized design characteristics, in particular cathode surface area and anode-cathode spacing using acetate as substrate. The results showed that the maximal H2production rates and best energetic performances could be obtained using the smallest, 71 cm2stainless steel cathode and 4 cm electrode distances, employing a 60 cm2bioanode. Cyclic voltammetric analysis was employed to investigate the dominant electron transfer mechanism of the architecturally optimized system.
authors.affiliation: Laboratory for Research on Advanced Processes for Water Treatment, Instituto de Ingeniería, Unidad Académica Juriquilla, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Querétaro, 76230, Mexico.
authors.forename: Isaac
authors.initials: I
authors.lastname: Rivera
authors.affiliation: Laboratory for Research on Advanced Processes for Water Treatment, Instituto de Ingeniería, Unidad Académica Juriquilla, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Querétaro, 76230, Mexico.
authors.forename: Péter
authors.initials: P
authors.lastname: Bakonyi
authors.affiliation: Laboratory for Research on Advanced Processes for Water Treatment, Instituto de Ingeniería, Unidad Académica Juriquilla, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Querétaro, 76230, Mexico. Electronic address: gbuitronm@iingen.unam.mx.
authors.forename: Germán
authors.initials: G
authors.lastname: Buitrón
mesh_terms: D000085:Acetates / Q000378:metabolism; D001674:Bioelectric Energy Sources; D004566:Electrodes; D004572:Electrolysis / Q000295:instrumentation*; D004579:Electron Transport; D006859:Hydrogen / Q000378:metabolism*; D013193:Stainless Steel
chemical_list: D000085:Acetates; D013193:Stainless Steel; D006859:Hydrogen
keywords: Biohydrogen; Cathode; Cyclic voltammetry; Electrode spacing; Microbial electrolysis cell