Pretreatment of lignocellulosic biomass using deep eutectic solvent (DES) has been demonstrated environmental and valid. Co-existing of donor and acceptor of hydrogen bond makes DES composition more complicated than traditional solvents, which limits their further scale-up utilization. Advances in biomass pretreatment using green solvent DES should excogitate efficient methodology for DES recycling. Electronically-controlled chemical methodology was first put forward to resolve recovery and recycling issue of DES lactic acid-ethylene glycol after biomass pretreatment. The methodology worked based on selectively migrating of lactate Lac^- and reserving of ethylene glycol using BP-A-BP bipolar membrane electrodialysis (BMED). Impact of primary factors on DES recovery was carefully studied. Lowest energy consumption for specific DES recovery reached 10.4 kw·h/kg and highest DES recovery rate approached 97.6 %. Cognition acquired from this research indicated a promising and efficient strategy for carboxylic acid-polyalcohol DES recovery with novel electronically-controlled chemical methodology.

使用低共熔溶剂 (DES) 预处理木质纤维素生物质已被证明是环保且有效的。氢键供体和受体的共存使得DES的组成比传统溶剂更复杂，这限制了它们的进一步放大利用。使用绿色溶剂 DES 进行生物质预处理的进展应该为 DES 回收提供有效的方法。首次提出电控化学方法解决生物质预处理后DES乳酸-乙二醇的回收利用问题。该方法基于选择性迁移乳酸 Lac ^-并使用 BP-A-BP 双极膜电渗析 (BMED) 保留乙二醇。对主要因素对 DES 回收率的影响进行了仔细研究。特定 DES 回收的最低能耗达到 10.4 kw·h/kg，最高 DES 回收率接近 97.6%。从这项研究中获得的认知表明，采用新型电子控制化学方法回收羧酸-多元醇 DES 是一种有前途且有效的策略。