Hydrothermal liquefaction of the brown macro-alga Laminaria Saccharina: Effect of reaction conditions on product distribution and composition

► The yield of bio-crude form HTL of macro-algae is low (∼20 wt%). ► The HHV of bio-crude from HTL of macro-algae is high (∼36 MJ/kg). ► Sugars present in the aqueous phase include mannitol and laminarin. ► The majority of the K and Na pass into the water phase. ► The majority of the Ca and Mg pass into the residue.