Improved Separations by Coupling Ion-Pair Extraction with Adsorption

摘要本项目旨在将离子对萃取与吸附相结合，以降低从水溶液中回收极性有机物的成本。利用特定的相互作用机制和耦合多重相互作用可以显著提高分离选择性。提出的工作包括使用季铵萃取剂对有机酸进行离子对萃取，并将离子对萃取与丙烯酸酯吸附剂极性位吸附相结合。与离子对萃取相关的疏水和静电相互作用将耦合到极性吸附相互作用。目标是量化每个交互机制的作用，并评估模型系统耦合交互的分离潜力。提高产品纯度，减少浪费，提高能源效率是本项目的强大动力。该结果可能会导致生产商品化学品和生物分子分离技术的改进。

CTS - 9531812 Gregory Payne University of Maryland, Baltimore County ABSTRACT The project is and attempt to combine ion-pair extraction with adsorption as a means to lower the costs of recovering polar organics form aqueous solution. Separation selectivities may be improved significantly be y exploiting specific interaction mechanisms and coupling multiple interactions. The proposed work involves the use of quaternary ammonium extractants for the ion-pair extraction of organic acids, and combing of ion-pair extraction with adsorption onto the polar sites of an acrylic ester sorbent. The hydrophobic and electrostatic interactions associated with ion-pair extraction will be coupled to polar adsorptive interactions. The goals are to quantify the role of each interaction mechanism and to assess the separations potential of coupling interactions for model systems. Enhancing product purity, minimizing waste and increasing energy efficiency provide strong motivation for this project. The results may lead to improved separation techniques for manufacturing commodity chemicals and biomolecules.