Journal
BIORESOURCE TECHNOLOGY
Volume 322, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.124522
Keywords
Ionic liquid pretreatment; Lignocellulosic biomass; Biofuels; Choline-based ILs; Protic acidic ILs; Combinatory pretreatments
Funding
- National Natural Science Foundation of China [U1932168]
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Ionic liquids have been used effectively in the conversion of lignocellulosic biomass into biofuels and chemicals, but challenges and technological hurdles still need to be addressed for further advancements in this field.
Processes that can convert lignocellulosic biomass into biofuels and chemicals are particularly attractive considering renewability and minimal environmental impact. Ionic liquids (ILs) have been used as novel solvents in the process development in that they can effectively deconstruct recalcitrant lignocellulosic biomass for high sugar yield and lignin recovery. From cellulose-dissolving ILs to choline-based and protic acidic ILs, extensive research in this field has been done, driven by the promising future of IL pretreatment. Meanwhile, shortcomings and technological hurdles are ascertained during research and developments. It is necessary to present a general overview of recent developments and challenges in this field. In this review paper, three aspects of advances in IL pretreatment are critically analyzed: biocompatible ILs, protic acidic ILs and combinatory pretreatments.
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