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Advancing ion-exchange membranes to ion-selective membranes: principles, status, and opportunities

《环境科学与工程前沿（英文）》 2023年第17卷第2期 doi: 10.1007/s11783-023-1625-0

摘要：

● IEM ion/ion selectivities of charge, valence, & specific ion are critically assessed.

关键词： Ion-exchange membranes Selectivity Separations

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Hydrophilic modification of poly(aryl sulfone) membrane materials toward highly-efficient environmental remediation

《化学科学与工程前沿（英文）》 2022年第16卷第5期页码 614-633 doi: 10.1007/s11705-021-2115-1

摘要： Poly(aryl sulfone) as a typical membrane material has been widely used due to excellent mechanical, chemical and thermal stability. However, the inherent hydrophobicity of poly(aryl sulfone) based membranes bears with the fouling issue during applications, which makes the membrane tending to adsorb contaminants on the surface so as to result in decreased separation performance and lifetime. In this critical review, we give a comprehensive overview on characterizations of hydrophilic membrane and diverse hydrophilic modification approaches of poly(aryl sulfone) membranes, predominantly including bulky, blending and surface modification technology. The discussions on the different modification methods have been provided in-depth. Besides, focusing on modification methods and performance of modified membranes, the related mechanisms for the performance enhancement are discussed too. At last, the perspectives are provided to guide the future directions to develop novel technology to manipulate the hydrophilicity of poly(aryl sulfone) membranes toward diverse practical and multi-functional applications.

关键词： poly(aryl sulfone) membrane separations modification hydrophilicity water treatment

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Measurement and correlation of supercritical CO

Hiroshi MACHIDA, Ryosuke TAGUCHI, Yoshiyuki SATO, Louw J. FLOURUSSE, Cor J. PETERS, Richard L. SMITH

《化学科学与工程前沿（英文）》 2009年第3卷第1期页码 12-19 doi: 10.1007/s11705-009-0151-3

摘要： Ionicliquids combined with supercritical fluid technology hold great promise as working solvents for developing compact processes. Ionic liquids, which are organic molten salts, typically have extremely low volatility and high functionality, but possess high viscosities, surface tensions and low diffusion coefficients, which can limit their applicability. CO , on the other hand, especially in its supercritical state, is a green solvent that can be used advantageously when combined with the ionic liquid to provide viscosity and surface tension reduction and to promote mass transfer. The solubility of CO in the ionic liquid is key to estimating the important physical properties that include partition coefficients, viscosities, densities, interfacial tensions, thermal conductivities and heat capacities needed in contactor design. In this work, we examine a subset of available high pressure pure component ionic liquid PVT data and high pressure CO - ionic liquid solubility data and report new correlations for CO -ionic liquid systems with equations of state that have some industrial applications including: (1) general, (2) fuel desulfurization, (3) CO capture, and (4) chiral separation. New measurements of solubility data for the CO and 1-butyl-3-methylimidazolium octyl sulfate, [bmim][OcSO ] system are reported and correlated. In the correlation of the CO ionic liquid phase behavior, the Peng-Robinson and the Sanchez-Lacombe equations of state were considered and are compared. It is shown that excellent correlation of CO solubility can be obtained with either equation and they share some common characteristics regarding interaction parameters. In the Sanchez-Lacombe equation, parameters that are derived from the supercritical region were found to be important for obtaining good correlation of the CO -ionic liquid solubility data.

关键词： compact processes chiral ionic liquids separations thermodynamic properties equations of state

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封装分子识别纳米凝胶的功能胶囊用于简捷有效移除水中有机微污染物 Article

刘文英, 巨晓洁, 蒲兴群, 蔡泉威, 刘玉琼, 刘壮, 汪伟, 谢锐, 褚良银

《工程（英文）》 2021年第7卷第5期页码 636-646 doi: 10.1016/j.eng.2021.02.007

摘要：

本文提出了一种利用封装具有分子识别特性纳米凝胶的功能胶囊简捷有效移除水中有机微污染物（OMP）的新方法。该功能胶囊由具有半透膜特性的海藻酸钙（Ca-Alg）凝胶囊膜和具有分子识别特性的聚[N-异丙基丙烯酰胺-共聚-丙烯酸-接枝-单（6-乙二胺基-6-去氧）-β-环糊精]（PNCD）纳米凝胶组成。其中，具有半透膜特性的Ca-Alg凝胶囊膜可以使OMP和水分子自由跨膜传输进入囊的内部，而截留封装的PNCD纳米凝胶。以具有毒性且在水中分布较广的双酚A（BPA）作为模型OMP，基于主-客体识别络合作用，PNCD纳米凝胶上的CD基团能够有效捕捉BPA分子。基于此，将功能胶囊置于含有BPA的水溶液中，即可实现水中OMP的简捷有效移除。另外，由于功能胶囊具有毫米尺度，进一步利用滤网即可便捷地将胶囊从溶液中分离出来。该功能胶囊对BPA的吸附动力学符合拟二级动力学模型，且其等温吸附热力学同时满足Freundlich以及Langmuir等温吸附模型。另外，由于所制备的PNCD纳米凝胶具有温敏性，进一步利用纯水，在高于PNCD纳米凝胶的体积相变温度的条件下，反复清洗胶囊即可实现胶囊的循环再生利用。因此，本研究提出的方法
为简捷有效地移除水中OMP提供了一种新的策略。

关键词：功能胶囊分子识别纳米凝胶有机微污染物主–客体络合分离