Improvement in hydrogen production from hard-shell nut residues by catalytic hydrothermal gasification

- We examine effects of natural mineral catalysts on hydrothermal gasification of hard-shell nut residues.
- Natural mineral catalysts increase hydrogen yield and decrease the amount of residue.
- Gaseous product and hydrogen yields were found slightly higher when Trona used as catalyst.
- Main degradation product in aqueous phase was found as acetic acid for all biomass types used.