Microbial Biohydrogen Production by Rhodobacter sphaeroides O.U.001 in Photobioreactor
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چکیده
Pure strains of Purple Non-Sulfur (PNS) bacteria: Rhodobacter sphaeroides strain O.U 001 was studied for its efficiency to produce biohydrogen using the photofermentative pathways. An annular photobioreactor was being designed aiming the uniform light distribution. In prototype annular photobioreactor, at an initial pH of 6.8±0.2, temperature 32 ± 2 ◦C, inoculum volume 10% (v/v), inoculum age of 48 h, light intensity of 15±1.1 W m and stirring at 250 rpm; the average H2 production rate was about 6.55±0.05 ml H2 h l media for Rhodobacter sphaeroides strain O.U 001 (initial Malic acid concentration of 2.01 g l). The biohydrogen production was found to be microbial mixed growth associated function. Keywords-Biohydrogen, photobioreactor, photofermentation, purple non-sulfur (PNS) bacteria.
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