PDF(Pubmed)
Abstract：
Deep eutectic solvents (DES) are green alternatives for conventional solvents. They have gained attention for their potential to extract valuable compounds from biomass, such as seaweed. In this framework, a case study was developed to assess the feasibility of pressure-driven membrane processes as an efficient tool for the recovery of deep eutectic solvents and targeted biomolecules. For this purpose, a mixture composed of the DES choline chloride - ethylene glycol (ChCl-EG) 1:2, water and alginate was made to mimic a DES extraction from seaweed. An integrated separation process design was proposed where ultrafiltration-diafiltration-nanofiltration (UF-DF-NF) was coupled. UF and DF were found to be effective for the separation of alginate with an 85 % yield. DES was likewise recovered by 93 %, proving the membrane filtrations\' technical feasibility. The NF performance to separate the DES from the water, for its recycling, laid by a 45 %-50 % retention and a final concentrated DES solution of 18 %(v/v).
摘要：
低共熔溶剂(DES)是常规溶剂的绿色替代品。他们因其从生物质中提取有价值的化合物的潜力而受到关注，如海藻。在这个框架中,开发了一个案例研究来评估压力驱动膜工艺作为回收低共熔溶剂和靶向生物分子的有效工具的可行性。为此,制备由DES氯化胆碱-乙二醇(ChCl-EG)1:2、水和藻酸盐组成的混合物以模拟从海藻中提取的DES。提出了一种将超滤-渗滤-纳滤（UF-DF-NF）耦合的集成分离工艺设计。发现UF和DF对藻酸盐的分离有效，收率为85％。DES同样恢复了93%，证明膜过滤技术的可行性。从水中分离DES的NF性能，它的回收利用，由45%-50%的保留率和18%(v/v)的最终浓缩DES溶液铺设。
