The Selectivity Challenge in Organic Solvent Nanofiltration: Membrane and Process Solutions
作者： Patrizia Marchetti , Ludmila Peeva , Andrew Livingston
DOI: 10.1146/ANNUREV-CHEMBIOENG-060816-101325
关键词:
摘要: Recent development of organic solvent nanofiltration (OSN) materials has been overwhelmingly directed toward tight membranes with ultrahigh permeance. However, emerging research into OSN applications is suggesting that improved separation selectivity at least as important further increases in membrane Membrane solutions are being proposed to improve selectivity, mostly by exploiting solute/solvent/membrane interactions and fabricating tailored membranes. Because achieving a perfect single stage difficult, process engineering solutions, such cascades, also advocated. Here we review these approaches the challenge, clarify our analysis, propose figure merit based on permselectivity between two solutes undergoing well ratio their molecular weights.
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