Université de Lorraine, Ecole Nationale Supérieure des Industries Chimiques, Laboratoire Réactions et Génie des Procédés ( UPR CNRS 3349 ), 1 rue Grandville, 54000 Nancy, France.
Environ Sci Technol. 2013 Mar 19;47(6):2809-16. doi: 10.1021/es303884n. Epub 2013 Feb 22.
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.
生物量是一种源自植物细胞壁的纤维材料，是未来生物精炼厂中生产液体燃料和化学品的潜在清洁可再生非粮饲料。离子液体作为生物质加工的选择性溶剂和催化剂的能力已经得到证实。因此，它们被认为是传统溶剂的替代品。然而，生物质衍生化合物的相平衡在文献中仍然缺乏。为了克服离子液体中生物质碳水化合物相平衡实验数据的缺乏，在 283 至 373 K 的温度范围内测量了 d-葡萄糖在四种离子液体中的溶解度。溶解度数据成功地与局部组成热力学模型（如 NRTL 和 UNIQUAC）相关联。在这项工作中，还评估了使用抗溶剂法从这些离子液体中提取葡萄糖的可能性。影响提取过程的参数是离子液体类型、乙醇/离子液体比、温度、含水量和时间。结果表明，乙醇可成功用作抗溶剂从离子液体中分离葡萄糖。
