Title of article :
Photo-hydrogen production rate of a PVA-boric acid gel granule containing immobilized photosynthetic bacteria cells
Author/Authors :
Tian، نويسنده , , Xin and Liao، نويسنده , , Qiang and Liu، نويسنده , , Wei and Wang، نويسنده , , Yong Zhong and Zhu، نويسنده , , Xun and Li، نويسنده , , Jun and Wang، نويسنده , , Hong، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Pages :
10
From page :
4708
To page :
4717
Abstract :
The polyvinyl alcohol (PVA)-boric acid gel granule facilitates the light penetration and mass transport as it has the features of the transparency and adequate porous structure. In this work, a hydrogen production bioreactor with the indigenous photosynthetic bacteria (PSB) Rhodopseudomonas palustris CQK 01 immobilized in a PVA-boric acid gel granule is developed to enhance the rate of photo-hydrogen production. Particular attention is paid to exploring the effects of illumination wavelength and intensity, as well as the effects of concentration, flow rate, pH, and temperature of influent substrate solution on the hydrogen production rate. The immobilized PSB gel granule exhibited the maximum hydrogen production rate of 3.6 mmol/g cell dry weight/h in all tests. The experimental results show that the hydrogen production rate of an immobilized PSB granule illuminated at 590 nm is distinctly higher than that at 470 and 630 nm. Photo-inhibition of the gel granule occurs as the long-wavelength illumination intensity exceeds 7000 lux. In addition, there exists an optimal pH of 7.0 and temperature of 30 °C for PSB immobilized in the granule to produce hydrogen. More importantly, the feasibility of PSB immobilized in the PVA-boric acid gel granule for the enhancement of the photo-hydrogen production is demonstrated.
Keywords :
Immobilization , photobioreactor , Hydrogen production , PVA , Photosynthetic bacteria
Journal title :
International Journal of Hydrogen Energy
Serial Year :
2009
Journal title :
International Journal of Hydrogen Energy
Record number :
1657889
Link To Document :
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