Lignocellulosic biomass is a rich source of fixed renewable carbon and a promising alternative to fossil sources. However, low effective hydrogen to carbon ratio limits its applications. This work studied the influence of oil-bath co-torrefaction of corncob and waste cooking oil for co-pyrolysis. It was compared with dry torrefaction and hydrothermal wet torrefaction firstly. Residual of oil-bath co-torrefaction were the highest of 97.01 %. Oil-bath co-torrefaction could maximize hydrogen atoms retention in corncob, which has a positive significance for deoxygenation during pyrolysis. Oil-bath co-torrefaction could also reduce the average activation energy required for corncob decomposition, while it was increased with dry torrefaction. Oil-bath co-torrefaction coupled with co-pyrolysis was more suitable for hydrocarbon-rich bio-oil production. Oil-bath co-torrefaction temperature had the greatest influence on bio-oil composition. High pressure promoted formation of the C[dbnd]C double bond and degradation of lignin, which further promoted the formation of monocyclic aromatics in bio-oil.
Bibliographical noteFunding Information:
This project was financially supported by the National Natural Science Foundation of China (No. 52166015; No. 22166026), The Natural Science Foundation of Jiangxi Province (20212ACB215007), The Major Discipline Academic and Technical Leaders Training Program of Jiangxi Province (20204BCJ23011).
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- Waste cooking oil
PubMed: MeSH publication types
- Journal Article