Biomass and Cellulose Dissolution—The Important Issue in Renewable Materials Treatment

Sustainable development strategies, as well the shift toward a circular bioeconomy, has led to high interest in and implementation of technologies that efficiently utilize biomass raw material. Switching from fossil-based bio-based resources requires consideration many new challenges problems. One crucial issues is solubility lignocellulose or at least its ingredients. According trends legislation, selected chemicals methods dissolution/treatment should also be environmentally friendly. The pretreatment processes prepare for further transformations (e.g., chemical, thermal including pyrolysis, biological) valuable products such biofuels, bio-oils, Fine Chemicals, solvents, plastics, others. This review discusses latest findings on dissolution application novel, green solvents ionic liquids deep eutectic discussed detail. impact composition structure these biomass/cellulose process, mechanism cellulose–ionic liquid interaction, presented. Some novel achievements usage inorganic salts specific metal complexes are overviewed.