Dual Utilization of Lignocellulose Biomass and Glycerol Waste to Produce Fermentable Levoglucosan via Fast Pyrolysis

Glycerol waste was combined with microwave to pretreat lignocellulose before fast pyrolysis. After pretreatment, most alkali and alkaline earth metals (87.9%) and lignin (52.6%) were removed, and a higher crystallinity was obtained. Comparatively, glycerol waste combined with microwave was proven to...

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Published inFrontiers in chemistry Vol. 10; p. 847767
Main Authors Zhang, Yingchuan, Xu, Feixiang, Chen, Fenglin, Zhang, Yanru, Wu, Yaxiang, Jiang, Liqun
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 10.03.2022
Subjects
Chemistry
fast pyrolysis
glycerol waste
levoglucosan
lignocellulose biomass
microwave pretreatment
lignocellulose biomass
glycerol waste
levoglucosan
microwave pretreatment
fast pyrolysis
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Summary:Glycerol waste was combined with microwave to pretreat lignocellulose before fast pyrolysis. After pretreatment, most alkali and alkaline earth metals (87.9%) and lignin (52.6%) were removed, and a higher crystallinity was obtained. Comparatively, glycerol waste combined with microwave was proven to be more efficient than glycerol with conventional heating. During fast pyrolysis, higher content of levoglucosan in glycerol waste-pretreated products (27.5%) was obtained, compared with those pretreated by pure glycerol (18.8%) and untreated samples (5.8%). Production of fermentative toxic aldehyde and phenol by-products was also inhibited after glycerol waste treatment. Following mechanistic study had validated that microwave in glycerol waste solvent could effectively ameliorate structure and components of lignocellulose while selectively removing lignin. Notably, under the optimal condition, the levoglucosan content in pyrolytic products was enhanced significantly from 5.8% to 32.9%. In short, this study provided an archetype to dually utilize waste resources for ameliorating lignocellulose structure and precisely manipulating complex fast pyrolysis.
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Feng Guo, Dalian University of Technology, China
Edited by: Hu Li, Guizhou University, China
Widya Fatriasari, Dr. Widya Fatriasari, Indonesia
Reviewed by: Lujiang Xu, Nanjing Agricultural University, China
This article was submitted to Green and Sustainable Chemistry, a section of the journal Frontiers in Chemistry
ISSN:2296-2646
2296-2646
DOI:10.3389/fchem.2022.847767