title: Perspectives on cultivation strategies and photobioreactor designs for photo-fermentative hydrogen production.
abstract: Photosynthetic bacteria have considerable biotechnological potential for biological hydrogen production due to higher substrate conversion efficiency and hydrogen yield. Phototrophic fermentation using photosynthetic bacteria has a major advantage of being able to further convert the byproducts originating from dark fermentation (e.g., volatile fatty acids) to hydrogen. Through the combination of dark and photo-fermentation processes, organic feedstock is fully converted into gaseous product (H2) at the highest possible H2 yield, with significant reduction of chemical oxygen demand (COD). The performance of photo-fermentation is highly dependent on the medium composition, culture conditions, and photobioreactor design. Therefore, this article provides a critical review of the effects of key factors affecting the photo-hydrogen production efficiency of photosynthetic bacteria, and also summarizes the strategies being applied in promoting the performance of photo-fermentation.
authors: Microalgae Biotechnology and Bioengineering Laboratory, Center for Biosciences and Biotechnology, National Cheng Kung University, Tainan, Taiwan.
authors: Chun-Yen
authors: CY
authors: Chen
authors: Chia-Hsien
authors: CH
authors: Liu
authors: Yung-Chung
authors: YC
authors: Lo
authors: Jo-Shu
authors: JS
authors: Chang
mesh_terms: D001709:Biotechnology / Q000295:instrumentation* / Q000379:methods*; D018929:Cell Culture Techniques / Q000379:methods*; D004867:Equipment Design; D005285:Fermentation / Q000528:radiation effects*; D006859:Hydrogen / Q000378:metabolism*; D058433:Photobioreactors / Q000382:microbiology*
chemical_list: D006859:Hydrogen