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Studies on the Dissolution of Glucose in Ionic Liquids and Extraction Using the Antisolvent Method

Abstract : Biomass, the fibrous material derived from plant cell walls, is a potentially clean and renewable nonfood feedstock for liquid fuel and chemical production in future biorefineries. The capability of ionic liquids to act as selective solvents and catalysts for biomass processing has already been proven. Thus, they are considered as an alternative to conventional solvents. Nevertheless, phase equilibria with biomass derived compounds is still lacking in the literature. To overcome the lack of experimental data on phase equilibria of biomass carbohydrates in ionic liquids, the solubility of D-glucose in four ionic liquids was measured within a temperature range from 283 to 373 K Solubility data were successfully correlated with local composition thermodynamic models such as NRTL and UNIQUAC. In this work, the possibility of extracting glucose from these ionic liquids using the antisolvent method has been also evaluated The parameters affecting the extraction process are the ionic liquid type, ethanol/ionic liquid ratio, temperature, water content, and time Results indicate that ethanol can be successfully used as an antisolvent to separate glucose from ionic liquids.
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El-Sayed R. E. Hassan, Fabrice Mutelet, Steve Pontvianne, Jean-Charles Moise. Studies on the Dissolution of Glucose in Ionic Liquids and Extraction Using the Antisolvent Method. Environmental Science and Technology, American Chemical Society, 2013, 47 (6), pp.2809-2816. ⟨10.1021/es303884n⟩. ⟨hal-01282422⟩



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