title: Photosynthetic hydrogen production by alginate immobilized bacterial consortium.
abstract: Photosynthetic hydrogen production from organic wastewaters using immobilized mixed culture with photosynthetic bacteria (PSB) was studied. A PSB consortium was immobilized by alginate matrix to form granules. The so-yielded granules exhibited minimal diffusional resistances to substrates and to illumination penetration but still produced more hydrogen from synthetic wastewater than the free cells at identical experimental conditions. Optimal granule size, cell loadings, and cell ages for granules and the minimum substrate concentration and maximum illumination intensity requited to maximize hydrogen production were studied. The applied alginate matrix can provide shield to embedded cells from external challenges, likely the produced proton gradients from the surroundings.
authors.affiliation: School of Environmental Science & Engineering, Tianjin University, Tianjin 300350, PR China; Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, PR China.
authors.forename: Huan
authors.initials: H
authors.lastname: Zhang
authors.affiliation: School of Environmental Science & Engineering, Tianjin University, Tianjin 300350, PR China.
authors.forename: Guanyi
authors.initials: G
authors.lastname: Chen
authors.affiliation: Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, PR China.
authors.forename: Quanguo
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, PR China; Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan. Electronic address: djlee@ntu.edu.tw.
authors.forename: Duu-Jong
authors.initials: DJ
authors.lastname: Lee
authors.affiliation: Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, PR China.
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, PR China.
authors.forename: Yameng
authors.initials: Y
authors.lastname: Li
authors.affiliation: Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002, PR China.
authors.forename: Pengpeng
authors.initials: P
authors.lastname: Li
authors.affiliation: School of Environmental Science & Engineering, Tianjin University, Tianjin 300350, PR China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Hu
authors.affiliation: School of Environmental Science & Engineering, Tianjin University, Tianjin 300350, PR China.
authors.forename: Beibei
authors.initials: B
authors.lastname: Yan
mesh_terms: D000464:Alginates; D018914:Cells, Immobilized; D006859:Hydrogen; D010788:Photosynthesis; D062065:Wastewater
chemical_list: D000464:Alginates; D006859:Hydrogen; D062065:Wastewater
keywords: Hydrogen production; Immobilization; Photosynthetic bacteria; Swine manure