The recent advancement in mechanically and chemically robust membranes has led to the capabilities of both reverse osmosis (RO) and pervaporation (PV) for separation of water/organic solvent and organic solvent mixtures. However, their performances are evaluated in different permeation formulas. To address this, we have conducted an analysis using a unified parameter: activity-based permeance. The present study evaluated RO and PV using the same organosilica membrane for the separation of both non-aqueous solvents (methanol/ethanol, methanol/iso-propanol [IPA], and methanol/dimethyl carbonate) and organic solvent-aqueous mixtures (including water with methanol, ethanol, IPA, tert-butanol, and glucose), at concentrations ranging from 0% to 100%. With the use of activity-based permeance, we achieved a consistent evaluation of both PV and RO processes. Moreover, this approach provides prediction of separation performance even in RO and PV.

中文翻译：

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使用基于活性的渗透分析反渗透和渗透蒸发：水系统和非水系统


机械和化学坚固性膜的最新进展使得反渗透（RO）和渗透蒸发（PV）能够分离水/有机溶剂和有机溶剂混合物。然而，它们的性能是通过不同的渗透公式进行评估的。为了解决这个问题，我们使用统一的参数进行了分析：基于活动的渗透性。本研究评估了使用相同有机硅膜分离非水溶剂（甲醇/乙醇、甲醇/异丙醇 [IPA] 和甲醇/碳酸二甲酯）和有机溶剂-水混合物（包括水）的 RO 和 PV甲醇、乙醇、IPA、叔丁醇和葡萄糖），浓度范围为 0% 至 100%。通过使用基于活动的渗透性，我们实现了对 PV 和 RO 过程的一致评估。此外，即使在 RO 和 PV 中，该方法也可以预测分离性能。