Biohydrogen

Biohydrogen is hydrogen produced via biological processes or from biomass.

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Biohydrogen plants are proposed industrial plants for the production of hydrogen. They would typically involve processes such as thermophillic fermentation, 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]

Hydrogen can be produced by bacterial species such as Rhodobacter sphaeroides and Enterobacter cloacae.^[3]. Biohydrogen can be produced throught 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. Biohydrogen produced from organic waste materials is a promising alternatives for a sustainable energy sources.

See also

• Biomass
• Biogas
• Biological hydrogen production (Algae)

References

1. ^ Hyvolution Biohydrogen production project
2. ^ Biohydrogen production paths
3. ^ Nath et al (2005) Hydrogen production by Rhodobacter sphaeroides strain O.U.001 using spent media of Enterobacter cloacae strain DM11. Applied Biotechnology