کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
681769 | 888962 | 2011 | 9 صفحه PDF | دانلود رایگان |
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.
► We review technology on photo-H2 fermentation, emphasizing photobioreactor design.
► We describe high-yield H2 production by combining photo and dark fermentation.
► We survey strategies used to solve the problems associated with photo-fermentation.
► We present recent advances on process improvement of photo-fermentation.
Journal: Bioresource Technology - Volume 102, Issue 18, September 2011, Pages 8484–8492