Hydrothermal liquefaction of Spirulina and Nannochloropsis salina under subcritical and supercritical water conditions

► Hydrothermal liquefaction of two algae at subcritical and supercritical water conditions. ► Comprehensive analysis of bio-crude and solid residue samples. ► First report of nutrient values of algal biomass solid residues. ► Correlate H/C ratio and heating value of bio-crude with process temperature.