Hydrogen from Biorenewables via Thermochemical Processes

Hydrogen can be produced from biorenewable feedstocks via thermochemical conversion processes such as pyrolysis, gasification, steam gasification, steam reforming of bio-oils, and supercritical water gasification (SWG) of biomass. 

12-14% based on the biomass weight (Demirbas, 2005a). The proposed second process is fast pyrolysis of biomass to generate bio-oil and catalytic steam reforming of the bio-oil to hydrogen and carbon dioxide. 

The catalytic aqueous phase reforming might prove useful for the generation of hydrogen-rich gas from carbohydrates extracted from renewable biomass and biomass waste streams. The biomass-derived hydrocarbons are suitable to hydrogen generation from biomass, as well as for the reforming. 

Hydrogen from organic wastes has generally been based on the following ther-mochemical reactions  

Production of hydrogen by catalytic steam gasification of biomass 

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