title: Photofermentative hydrogen production from wastes.
abstract: In many respects, hydrogen is an ideal biofuel. However, practical, sustainable means of its production are presently lacking. Here we review recent efforts to apply the capacity of photosynthetic bacteria to capture solar energy and use it to drive the nearly complete conversion of substrates to hydrogen and carbon dioxide. This process, called photofermentation, has the potential capacity to use a variety of feedstocks, including the effluents of dark fermentations, leading to the development of various configurations of two-stage systems, or various industrial and agricultural waste streams rich in sugars or organic acids. The metabolic and enzymatic properties of this system are presented and the possible waste streams that might be successfully used are discussed. Recently, various immobilized systems have been developed and their advantages and disadvantages are examined.
authors.affiliation: Département de Microbiologie et Immunologie, Université de Montréal, CP 6128 Succursale Centre-ville, Montréal, Québec, Canada H3C 3J7.
authors.forename: Tugba
authors.initials: T
authors.lastname: Keskin
authors.forename: Mona
authors.initials: M
authors.lastname: Abo-Hashesh
authors.forename: Patrick C
authors.initials: PC
authors.lastname: Hallenbeck
mesh_terms: D001709:Biotechnology / Q000379:methods*; D005285:Fermentation / Q000528:radiation effects*; D006859:Hydrogen / Q000378:metabolism*; D008027:Light; D053858:Metabolic Networks and Pathways; D014866:Waste Products / Q000032:analysis*
chemical_list: D014866:Waste Products; D006859:Hydrogen