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Updated: Jul 2, 2026

A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities
Published on: December 25, 2015
Continuous H2 production by anaerobic mixed microflora in membrane bioreactor
Dong-Yeol Lee1, Yu-You Li, Tatsuya Noike
1National Institute for Environmental Studies, Research Center for Material Cycles and Waste Management, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
Abstract:
The characteristics of H(2) 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 H(2) fermentation was successfully achieved, the MBR revealing an H(2) 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 H(2) production rate was 2.43-2.56 l H(2) l(-1)d(-1), which was about 2.6 times higher than that (0.95-0.97 l H(2) l(-1)d(-1)) of the CSTR, reflecting the MBR's higher H(2) productivity.
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