Hydrogen as a clean energy carrier has attracted great interests world-wide to substitute fossil fuels and to reduce greenhouse gas (GHG) emissions. The emerging use of hydrogen for energy and transport has been increasing rapidly, which includes fuel cell vehicles, energy storage for power generation and substitution for natural gas, and these will be the major areas of hydrogen demand increase in the future.
To explore the opportunities for enhancing H2 yield through steam inputs to biomass gasification and gas processing operations, Prof. Shusheng Pang presents a review on recent advances in hydrogen production from woody biomass through thermochemical conversion processes. The first step in the process is advanced biomass steam gasification which produces a hydrogen-rich gas mixture consisting of H2, CO, CO2 and CH4. Following the gasification, CO2 in the gas is captured for reuse and the gas is further processed to convert CH4 and CO to H2 and CO2 through reactions with steam. Eventually H2 in the H2/CO2 mixture is separated for storage using organic liquid carrier through hydrogenation.
The review points out that steam input to biomass gasification and gas processing operations effectively transfer hydrogen atom in the steam to hydrogen gas in the final product and more research and development are required for implementation of the hydrogen production technologies from woody biomass in the further.
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https://www.sciencedirect.com/science/article/pii/S2369969823000415
Editor : Cao Huicong