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 H production rates and best energetic performances could be obtained using the smallest, 71 cm stainless steel cathode and 4 cm electrode distances, employing a 60 cm bioanode. Cyclic voltammetric analysis was employed to investigate the dominant electron transfer mechanism of the architecturally optimized system.
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| http://dx.doi.org/10.1016/j.chemosphere.2016.12.061 | DOI Listing |
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