Continuous H₂ production by anaerobic mixed microflora in membrane bioreactor
2009
Lee, Dong-Yeol | Li, Yu-You | Noike, Tatsuya
The characteristics of H₂ production by anaerobic mixed microflora in a submerged membrane bioreactor (MBR) were investigated. For comparative purposes, a continuous stirred tank reactor (CSTR) was operated in parallel under the same conditions. The experimental results showed that 35-day stable and continuous H₂ fermentation was successfully achieved, the MBR revealing an H₂ content of 51% and the CSTR, 58%. No methane gas was detected during the experiments for the long solids retention time (SRT) of 90 days. The MBR's H₂ production rate was 2.43-2.56l H₂ l⁻¹ d⁻¹, which was about 2.6 times higher than that (0.95-0.97l H₂ l⁻¹ d⁻¹) of the CSTR, reflecting the MBR's higher H₂ productivity.
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