Solid base catalytic hydrothermal liquefaction of macroalgae: Effects of process parameter on product yield and characterization.

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ID: 105072
2020
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Abstract
The hydrothermal liquefaction (HTL) of Sargassum tenerrimum (ST) macroalgae was carried out for 15 min, over various solid base catalysts (CaO supported on CeO, AlO, and ZrO) at different reaction temperatures (260-300 °C), different catalyst quantities (5-25 wt%) and using different solvent systems. Maximum bio-oil (BO) yields for the non-catalytic HTL with single solvent water, ethanol, and water-ethanol co-solvent were 3.3 wt%, 23.3 wt%, and 32.0 wt%, respectively, at 280 °C. Ethanol as single solvent elicited highest BO yield of 25.2 wt% with CaO/ZrO (10.0 wt%) catalyst. However, the highest BO yield (33.0 wt%) accompanied by higher conversion (70.5%) was obtained with CaO/ZrO (10.0 wt%) under water-ethanol co-solvent. The selectively higher percentage of ester functional compounds (87.8%) was found with CaO/ZrO catalyst under water-ethanol co-solvent. Also, the bio-oil obtained from catalytic liquefaction showed a higher high heating value (HHV) compared to that from the non-catalytic HTL reaction.
Reference Key
biswas2020solidbioresource Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Biswas, Bijoy;Kumar, Avnish;Fernandes, Alisha C;Saini, Komal;Negi, Shweta;Muraleedharan, Usha D;Bhaskar, Thallada;
Journal Bioresource technology
Year 2020
DOI
S0960-8524(20)30503-4
URL
Keywords
bio-oil macroalgae catalytic hydrothermal liquefaction ester compounds

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