title: Bioconversion characteristics of Rhodopseudomonas palustris CQK 01 entrapped in a photobioreactor for hydrogen production.
abstract: The performance of the entrapped-cell photobioreactor during H2 production was assessed by using glucose as substrate in a continuous operation mode. The maximal hydrogen production rate and light conversion efficiency, 2.61 mmol/L/h and 82.3%, were obtained at a HRT of 11.4 h, an substrate loading rate of 4.2 mmol/h and an illumination of 590 nm and 6000 lux, the corresponding hydrogen yield and total energy efficiency were 0.62 mmol H2/(mmol glucose) and 4.8%, respectively. The results indicate the H2 production system illuminated at 590 nm wavelength engaged in energy storage for H2 production due to more ATP synthesized in primary reaction center, and was of higher energy recovery capacity. Furthermore, the total energy efficiency was far lower than the corresponding light conversion efficiency due to intermediates production.
authors.affiliation: Key Laboratory of Low-grade Energy Utilization Technologies and Systems (Ministry of Education), Chongqing University, Chongqing 400030, China. wangyzh@cqu.edu.cn
authors.forename: Yong-Zhong
authors.initials: YZ
authors.lastname: Wang
authors.forename: Qiang
authors.initials: Q
authors.lastname: Liao
authors.forename: Xun
authors.initials: X
authors.lastname: Zhu
authors.forename: Rong
authors.initials: R
authors.lastname: Chen
authors.forename: Cheng-Long
authors.initials: CL
authors.lastname: Guo
authors.forename: Jin
authors.initials: J
authors.lastname: Zhou
mesh_terms: D001709:Biotechnology / Q000295:instrumentation* / Q000379:methods*; D018914:Cells, Immobilized / Q000166:cytology / Q000187:drug effects / Q000378:metabolism / Q000528:radiation effects; D003470:Culture Media / Q000494:pharmacology; D006859:Hydrogen / Q000378:metabolism*; D008027:Light; D009930:Organic Chemicals / Q000032:analysis; D058433:Photobioreactors / Q000382:microbiology*; D012241:Rhodopseudomonas / Q000166:cytology / Q000187:drug effects / Q000378:metabolism* / Q000528:radiation effects; D013997:Time Factors
chemical_list: D003470:Culture Media; D009930:Organic Chemicals; D006859:Hydrogen