Supercritical water gasification of biomass for H2 production: Process design

► A conceptual design for a SCWG plant for H2 production was developed. ► The process was simulated with five different (waste) biomass-water mixtures. ► SCWG reaction is self-sustainable at a 15-25% biomass concentration in the feed. ► The H2 production is maximal at a 15-25% biomass concentration in the feed. ► Utilizing PEMFC and turbines, a net power of ∼150 kWe/(1000 kgfeed/h) is obtained.