For the first time, 12 different supported deep eutectic solvent (DES) liquid membranes were prepared and characterized. These membranes consist of a polymeric support impregnated with a hydrophobic DES. First, the different membranes were characterized and their stability in water and air was determined. Subsequently, the supported DES liquid membranes were applied for the recovery of furfural (FF) and hydroxymethylfurfural (HMF) from aqueous solutions. The effects of substrate properties (e.g. pore size), DES properties (e.g. viscosity) and concentrations of FF and HMF in the feed phase on the observed diffusivities and permeabilities were assessed. It was found that the addition of DES enhances the transport of FF and HMF through the polymeric membrane support. In particular, the use of the DES consisting of thymol + lidocaine (in the molar ratio 2 : 1) impregnated in a polyethylene support resulted in enhanced transport for both FF and HMF, and is most interesting for (in situ) isolation of FF and HMF from aqueous solutions, e.g. in biorefinery processes.

中文翻译：

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使用负载型疏水性深共晶溶剂液膜从水溶液中选择性分离糠醛和羟甲基糠醛

首次制备并表征了12种不同的支撑型深共晶溶剂（DES）液膜。这些膜由浸渍有疏水性DES的聚合物载体组成。首先，表征不同的膜并确定其在水和空气中的稳定性。随后，将负载的DES液膜用于从水溶液中回收糠醛（FF）和羟甲基糠醛（HMF）。底物特性（例如孔径），DES特性（例如根据观察到的扩散率和渗透率评估进料相中FF和HMF的浓度。发现添加DES增强了FF和HMF通过聚合物膜载体的运输。特别地，使用由百里香酚和利多卡因（摩尔比为2：1）浸渍在聚乙烯载体中的DES导致FF和HMF的转运都增强，这对于FF和HMF的（原位）分离最为有趣。来自水溶液的HMF，例如在生物精炼过程中。