Abstract
Hydrogen fermentation, a biological hydrogen production process from organic wastewater, has been drawing attention as a sustainable production process of hydrogen.This paper compiles previous studies on hydrogen producing bacteria and hydrogen fermentation processes and reports the latest trends of hydrogen fermentation. Regarding hydrogen producing bacteria, diverse hydrogen producing bacteria and their different yields of hydrogen, their harvesting methods and microbial community analyses in hydrogen fermentation were summarized. In hydrogen fermentation processes, on the other hand, previous studies using varied reactor configurations and the two phase hydrogen-methane fermentation processes were summarized. The prospect on hydrogen fermentation was discussed at the end.
