Microbial electrolysis cell hydrogen yield

Logan BE, Call D, Cheng S, Hamelers HVM, Sleutels THJA, Jeremiasse AW, Rozendal RA. Microbial electrolysis cells for high yield hydrogen gas production from organic matter. Environ Sci Technol 2008 42 8630-8640. 

There are several possible combinations of a hybrid system (1) dark fermentation plus photofermentation. VFAs that are produced by dark fermentation are perfect substrates for photofermentation (2) dark fermentation plus microbial electrolysis cell (Yan et al., 2015) (3) dark fermentation plus cell-free enzymatic system. These three combinations aU have the potential to achieve a maximum yield of I2H2 per glucose and (4) dark fermentation plus anaerobic digester. VFAs in the effluent of dark fermentation can be substrates for methanogens. This process can produce a mixture of hydrogen and methane. 

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