Effect of process parameters on hydrothermal liquefaction of oil palm biomass for bio-oil production and its life cycle assessment
2015
Chan, Yi Herng | Suzana Yusup, | Quitain, Armando T. | Tan, Raymond R. | Sasaki, Mitsuru | Lam, Hon Loong | Uemura, Yoshimitsu
This paper presents the studies on the effect of three process parameters; temperature, pressure and reaction time on the subcritical and supercritical hydrothermal liquefaction of oil palm empty fruit bunch, palm mesocarp fiber and palm kernel shell. The effect of temperature (330–390°C), pressure (25–35MPa) and reaction time (30–240min) on bio-oil yields were investigated using a Inconel batch reactor. The optimum liquefaction condition for empty fruit bunch, palm mesocarp fiber and palm kernel shell was at supercritical condition of water; 390°C and 25MPa. For the effect of reaction time, bio-oil from empty fruit bunch and palm mesocarp fiber attained maximum yields at 120min, whereas bio-oil yield from palm kernel shell continued to increase at reaction time of 240min. Lastly, a life cycle assessment based on a conceptual biomass hydrothermal liquefaction process for bio-oil production was constructed and presented.
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