木质素
离子液体
化学
纤维素
生物量(生态学)
萃取(化学)
木质纤维素生物量
吡啶
有机化学
溶解
农学
催化作用
生物
作者
Isa Hasanov,Sabarathinam Shanmugam,Timo Kikas
出处
期刊:Chemosphere
[Elsevier]
日期:2022-03-01
卷期号:290: 133297-133297
被引量:17
标识
DOI:10.1016/j.chemosphere.2021.133297
摘要
Protic ionic liquids (PILs) have been considered effective solvents for the selective separation and recovery of cellulose from lignocellulosic biomass. However, PILs can also be utilized for the extraction and conversion of lignin into fuels and value-added products. The objective of this work was to study the extraction of lignin from ash tree (Fraxinus exselsior) hardwood biomass using three different PILs-pyridinium acetate, pyridinium formate [Py][For], and pyrrolidinium acetate. Fiber analysis was used to determine the biochemical composition of the left-over biomass after lignin separation. FTIR and NMR were applied to determine the structure of dissolved lignin. Additionally, the regeneration potential and recyclability of PILs were assessed. Our results demonstrate that treatment with [Py][For] at 75 °C yields the highest percentage of lignin dissolution from biomass. This indicates that PILs could be used for Kraft lignin dissolution as well as separation of lignin from raw, milled biomass.
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