Complex effect of lignocellulosic biomass pretreatment with 1-butyl-3-methylimidazolium chloride ionic liquid on various aspects of ethanol and fumaric acid production by immobilized cells within SSF

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

“…A review on various cellulase stabilization techniques for the single-step process and the design of enzyme compatible biomass-dissolving ILs was recently published by Elgharbawy et al 544 The recent trends in IL-tolerant enzymes and microorganisms were also critically reviewed by Portillo and Saadeddin 545 and Xu et al 546 It is notable here to mention that the residual ILs in the enzymatic hydrolysates inhibit the growth and productivity of microorganisms in downstream and fermentation processes. 547,548 The residual [EMIM][OAc] in the hydrolysates (higher than 0.1%) was reported to inhibit the growth and ethanol production by S. cerevisiae, suggested due to a potential synergistic effect between this particular combination of anions and cations. 549 The water-wash step results in a signicant sugar loss and generation of large amounts of wastewater.…”

Ionic Liquids in Biomass Processing

“…Hybrid poplar, White poplar [70,93] 1-Butyl-3-methylimidazolium chloride Spruce and Hornbeam wood [94] Tetrabutylammonium hydroxide Switchgrass [95] Triethylammonium hydrogensulfate Miscanthus giganteus [96] Pyridinium chloride Bamboo [97] 1-Allyl-3-methylimidazolium chloride Hybrid Pennisetum [98] 1-Ethyl-3-methyl imidazolium acetate and cholinium lysinate Switchgrass [99,100] 1-Allyl-3-methylimidazolium chloride and 1-butyl-3-methylimidazolium acetate…”

Direct Ethyl Levulinate Production from Raw Lignocellulosic Biomass Mediated by a Novel Taurine-Based Imidazolium Ionic Liquid

“…As far as pretreatments are concerned, ILs mainly disrupt the strong chemical association between cellulose, hemicelluloses, and lignin in plant cell walls, leading to crystallinity decrease and delignification through carbohydrate solubilization. , In this scenario, the most studied ILs for biomass pretreatment are 1-alkyl-3-methylimidazolium derivatives, especially 1-butyl-3-methylimidazolium chloride [BMIM]­[Cl], 1-butyl-3-methylimidazolium acetate [BMIM]­[OAc], and 1-ethyl-3-methylimidazolium acetate [EMIM]­[OAc] . Recently, Uto and co-workers evaluated nine different ILs, concluding that 1-allyl-3-methylimidazolium chloride ([AMIM]­[Cl]) was the most effective for cellulose dissolution.…”