The term Biohydrogen means hydrogen produced via biological processes. The making of biohydrogen is different from that of biological hydrogen produced by algae.[citation needed]
[edit] Fermentation
Biohydrogen gas can be extracted from biomass through dark fermentation and/or photofermentation by bacteria.
[edit] Fermentation plants
Fermentative hydrogen production plants are proposed industrial plants for the production of hydrogen. They would typically involve processes such as thermophilic fermentation, dark fermentation and/or photofermentation and gas cleaning.[1] Biohydrogen production can also involve an element of anaerobic digestion where the methane from biogas is converted through steam reforming into hydrogen.[2]. Biohydrogen produced from organic waste materials is a promising alternatives for sustainable energy sources.
Hydrogen can be produced by bacterial species such as Rhodobacter sphaeroides and Enterobacter cloacae.[3] Biohydrogen is always and in no other way produced through dark fermentation either by mix culture of hydrogen producing sludge or pure culture of anaerobic bacteria such as Clostridium butyricum.
Proton exchange membrane fuel cells (PEMFC) are the essential technology that made possible the conversion of the energy content in biohydrogen to electricity.
[edit] See also
[edit] References
- ^ Hyvolution Biohydrogen from biomass project
- ^ Biohydrogen from biomass paths
- ^ Nath et al. (2005) Hydrogen production by Rhodobacter sphaeroides strain O.U.001 using spent media of Enterobacter cloacae strain DM11. Applied Biotechnology
[edit] External links
