Pretreatment of bagasse with a minimum amount of cholinium ionic liquid for subsequent saccharification at high loading and co-fermentation for ethanol production

Cellulose solvent-based pretreatment for enhanced second-generation biofuel production: a review

“…Besides, a minimum amount of consumed IL and waste generation happen at high biomass loading. 476 Cruz et al 477 investigated the effects of switchgrass loading on [EMIM][OAc] pretreatment in terms of viscosity, cellulose crystallinity, chemical composition, saccharication kinetics, and sugar yield. The IL pretreatment caused reduction in biomass recalcitrance for 3, 10, 20, 30, 40, and 50 wt% biomass loading and a "solid" like behavior was observed when the biomass loading increased.…”

Generation of ionic liquid tolerant Pseudomonas putida KT2440 strains via adaptive laboratory evolution

“…14 Numerous studies, such as IL screening and condition optimization have been performed to realize the IL-based pretreatment of lignocellulosic biomass at an industrial scale. 8,[15][16][17][18][19] Even with great potential, the major obstacle in the use of ILs is their high cost. 8 While imidazolium-based ILs (e.g., 1-ethyl-3-methylimidazolium acetate, 1-butyl-3-5 methylimidazolium chloride) have been extensively studied given their ability to obtain high sugar yields, 20 the cost was estimated at $20 -$100 per kg.…”

Rapid pretreatment of Miscanthus using the low-cost ionic liquid triethylammonium hydrogen sulfate at elevated temperatures

“…have been achieved for bagasse by Ninomiya et al 43 and cornstover by Xu et al 17 While both approaches are promising, they have relied on rather long processing times of 21 h at 110°C 43 and 3 h at 140°C, 17 respectively, and may face IL recovery issues. IonoSolv pretreatment is a lignocellulose fractionation technology that uses ionic liquid-water mixtures to extract lignin and hemicellulose from the biomass while leaving behind a cellulose rich pulp.…”

“…42 Low-cost ILs based on choline cations in dilute aqueous solutions (3-15% IL) have been suggested as economical alternative in terms of solvent cost. 17,43 High saccharification yields of over 90%…”