Effect of reaction temperature and ethanol-to-water ratio on bio-oil yield from catalytic hydrothermal liquefaction of sugarcane leaves
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Abstract
This study investigates the effects of reaction temperature and ethanol per water ratio (EPW) on bio-oil yields from the hydrothermal liquefaction (HTL) of sugarcane leaves. Experiments were performed in a high-pressure 100 mL Ni-alloy batch reactor at different EPWs (0:1, 1:10 , 1:5 , 1:2.5 , and 1:1 ). The HTL process was conducted with 5 g. sugarcane leaves and 1 wt.% Na2CO3 as a catalyst. The reaction temperatures ranged from 250-350 °C with a reaction time of 60 min. A maximum yield of 34.8% was obtained with an EPW of 1:5 at a reaction temperature of 300 °C. The maximum conversion of 89.36% was obtained at an EPW of 350 °C. Gas chromatography-mass spectrometry results indicated that the main bio-oil component was the fatty acid methyl ester group, of which the oleic acid methyl ester was the largest component. Finally, the WSP from the HTL process was weakly acidic and had high conductivity.
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This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
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