title: Continuous H2 production by anaerobic mixed microflora in membrane bioreactor.
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.
authors.affiliation: National Institute for Environmental Studies, Research Center for Material Cycles and Waste Management, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
authors.forename: Dong-Yeol
authors.initials: DY
authors.lastname: Lee
authors.forename: Yu-You
authors.initials: YY
authors.lastname: Li
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Noike
mesh_terms: D001421:Bacteria, Anaerobic / Q000737:chemistry* / Q000145:classification*; D019149:Bioreactors / Q000382:microbiology*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006859:Hydrogen / Q000378:metabolism*; D008567:Membranes, Artificial; D012722:Sewage / Q000382:microbiology*; D013045:Species Specificity
chemical_list: D008567:Membranes, Artificial; D012722:Sewage; D006859:Hydrogen