Hydrothermal liquefaction of sugarcane bagasse to bio-oils: Effect of liquefaction solvents on bio-oil stability

Bio-oil produced from the hydrothermal liquefaction (HTL) of biomass is unstable and cannot be transported over long distances to a refinery for upgrading transportation fuel. This study examined effect solvent on stability bio-oils derived HTL sugarcane bagasse. The accelerated aging test (0–8 days at 80 °C) was used assess these oils with aid indicators such as water content, molecular weight range, functional groups present, phase separation, thermal stability, amount residue after analysis oils. mixture ethanol/water found produce most stable bio-oil when compared crude glycerol/water or its own. light fractionated by extraction were more than their corresponding bio-oils. higher heating values (HHVs) during agiging process relatively between 33 35 MJ/kg. maximum boiling temperature first peak in DTG thermogram aged oil 147 °C (cf. diesel 157 °C), while that up 190 °C. stabilities either ethanol glycerol are related alkylation, esterification, acetalization reactions. has demonstrated bagasse presence produces good quality have shelf-lives been projected stored 8 years minor compositional structural changes.