研究离子液体-醇水体系预处理生物质后 1-烯丙基-3-甲基氯化咪唑的快速高效回收。
Research on the quick and efficient recovery of 1-allyl-3-methylimidazolium chloride after biomass pretreatment with ionic liquid-aqueous alcohol system.
机构信息
The Key Lab of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, No. 381, Wushan Road, Guangzhou 510640, China.
The Key Lab of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, No. 381, Wushan Road, Guangzhou 510640, China.
出版信息
Bioresour Technol. 2017 Dec;245(Pt A):760-767. doi: 10.1016/j.biortech.2017.08.145. Epub 2017 Aug 24.
Membrane-based methodology electrodialysis (ED) was employed for the quick and efficient recovery of ionic liquid AmimCl from the aqueous solutions after biomass pretreatment with AmimCl-aqueous methanol/ethanol systems. IL recovery performance was relatively stable as the variation of IL-alcohol systems employed in the pretreatment process. IL recovery ratio (R) of 66%-71%, IL recovery performance of specific energy consumption (Sp) of 429-467g/kwh and IL transport rate (Tr) of 5.3-8.2g/(mmin) were obtained by single ED treatment. Enhanced IL recovery performance was resulted with the semi-continuous ED-assisted process with R reached 93% and Sp reached 482g/kwh. Based on the characteristics of IL solutions, influence of different AmimCl-based solvents pretreatment on IL recovery was discussed and feasibility of electrodialysis treatment for such IL recovery task was also analyzed. Potential gained from this study suggests a feasible methodology for the quick and efficient recovery of ionic liquid after biomass pretreatment.
采用基于膜的电渗析（ED）方法，从生物质预处理后的含离子液体[Emim]Cl 的水醇溶液中快速有效地回收离子液体[Emim]Cl。离子液体回收性能相对稳定，这是因为在预处理过程中使用的离子液体-醇体系发生了变化。通过单次 ED 处理，可获得 66%-71%的离子液体回收率（R）、429-467g/kWh 的离子液体比能耗（Sp）和 5.3-8.2g/（mmin）的离子液体迁移率（Tr）。采用半连续 ED 辅助工艺，可提高离子液体的回收率，达到 93%，比能耗达到 482g/kWh。根据离子液体溶液的特点，讨论了不同[Emim]Cl 基溶剂预处理对离子液体回收的影响，并分析了电渗析处理在这种离子液体回收任务中的可行性。本研究的潜力表明，这是一种快速高效地从生物质预处理后回收离子液体的可行方法。
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