Hydrothermal conversion of Ulva macro algae in supercritical water

- Hydrothermal gasification of Ulva macro algae is performed between 400 and 550 °C.
- Solid residues represent 7-18 wt.% of the initial dry material and are a mixture of char and ash.
- Gasification was performed in 7 min and allows to obtain a H2, CO2 and CH4 mixture (>15 mol.%).
- The supercritical conversion was visualized with a Hydrothermal Diamond Anvil Cell.