Journal
BIORESOURCE TECHNOLOGY
Volume 319, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.124176
Keywords
Enteromorpha clathrata; Hydrothermal liquefaction; GC-MS; DFT; Macroalgae
Funding
- China Postdoctoral Science Foundation [2019T120408]
- Foundation of State Key Laboratory of Coal Combustion [FSKLCCA1904]
- Natural Science Foundation of Jiangsu Province, China [BK20190843]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [19KJB480002]
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This study examined the conversion of Enteromorpha clathrata into bio-oil through hydrothermal liquefaction, finding that a two-step reaction method can increase bio-oil yield and improve quality.
In this work, the conversion of Enteromorpha clathrata into bio-oil through hydrothermal liquefaction (HTL) was investigated under different preparation conditions. A two-step reaction method was compared with single-step reaction. At a high temperature, bio-oil produced through the two-step hydrothermal reaction displayed slight changes in yield, but solid residue rate was low. The liquid-to-material ratio of the optimal preparation condition was 40/4 (mL/g). Bio-oil produced in each experiment at this ratio was further analyzed using GC/MS. Furthermore, density functional theory (DFT) quantitative calculation was used in analyzing and proving the possible reaction path of the conversion of furan compounds to aromatic compounds during a direct high temperature liquefaction process. Results revealed that the two-step method can ensure a high bio-oil yield, while preventing the occurrence of side reactions caused by long-term high-temperature reactions, and improve the bio-oil quality.y
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