Co-liquefaction of micro- and macroalgae in subcritical water

- Co-liquefaction of SP and EP alleviated the severe reaction conditions.
- Positive synergetic effect existed during the co-liquefaction of SP and EP.
- Co-liquefaction improved energy recovery and promoted in situ deoxygenation of oil.
- The HHV of bio-oil was 35.3 MJ/kg from the co-liquefaction of SP and EP.