Currently, hydrogen is primarily used in the chemical industry, but in the near future it will become
a significant fuel. There are many processes for hydrogen production. This paper reviews the
technologies related to hydrogen production from both fossil and renewable biomass resources
including reforming (steam, partial oxidation, autothermal, plasma, and aqueous phase) and pyrolysis.
In addition, electrolysis and other methods for generating hydrogen from water, hydrogen storage
related approaches, and hydrogen purificationmethods such as desulfurization andwater-gas-shift are
discussed