Biohydrogen Production from Carbon Monoxide and Water by Rhodopseudomonas palustris P4
2005
Oh, Y.K. (Pusan National University, Busan, Republic of Korea) | Kim, Y.J. (Pusan National University, Busan, Republic of Korea) | Park, J.Y. (Pusan National University, Busan, Republic of Korea) | Lee, T.H. (Pusan National University, Busan, Republic of Korea) | Kim, M.S. (Korea Institute of Energy Research, Daejeon, Republic of Korea) | Park, S.H. (Pusan National University, Busan, Republic of Korea), E-mail: parksh@pusan.ac.kr
A reactor-scale hydrogen (H₂) production via the water-gas shift reaction of carbon monoxide (CO) and water was studied using the purple nonsulfur bacterium, Rhodopseudomonas palustris P4. The experiment was conducted in a two-step process: an aerobic/chemoheterotrophic cell growth step and a subsequent anaerobic H₂ production step. Important parameters investigated included the agitation speed, inlet CO concentration and gas retention time. P4 showed a stable H₂ production capability with a maximum activity of 41 mmol H₂ g cell-¹h-¹ during the continuous reactor operation of 400 h.
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