Utilization of inorganic salts as adjuvants for ionic liquid-water pretreatment of lignocellulosic biomass: enzymatic hydrolysis and ionic liquid recycle.

ABSTRACT: Pretreatment of lignocellulosic biomass with ionic liquids (ILs) for the large-scale biorefinery remains challenging due to its high price. This study focused on the utilization of inorganic salts as adjuvants for ionic liquid-water pretreatment to improve the tolerance to water and the reusability of the ILs. After the pretreatment of rice straw by the mixture of 40% 1-ethyl-3-methylimidazolium chloride ([C₂mim]Cl) + 53% water + 7% K₂CO₃ at 110 °C for 1 h, the residues became highly susceptible to enzymatic hydrolysis; 93.70% of lignin was removed, and 92.07% sugar yield was achieved. [C₂mim]Cl-K₂CO₃ aqueous biphasic system was formed at room temperature when K₂CO₃ concentration increased to more than

SUBMITTER: Gao J 

PROVIDER: S-EPMC6560112 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature