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High-performance membranes with full pH-stability

Authors
  • Daems, Nick;
  • Milis, Sam;
  • Verbeke, Rhea; 104986;
  • Szymczyk, Anthony;
  • Pescarmona, Paolo P;
  • Vankelecom, Ivo FJ; 13539;
Publication Date
Jan 01, 2018
Source
Lirias
Keywords
License
Unknown
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Abstract

© 2018 The Royal Society of Chemistry. Following current strong demands from, among others, paper, food and mining industries, a novel type of nanofiltration membrane was developed, which displays excellent performance in terms of selectivity/flux with a unique combination of chemical stability over the full (0-14) pH-range and thermal stability up to 120 °C. The membrane consists of polyvinylidene fluoride grafted with polystyrene sulfonic acid. The optimum membrane showed water permeances of 2.4 L h-1 m-2 bar-1 while retaining NaCl, MgSO4 and Rhodamine B (479 Da) for respectively ≈60%, ≈80% and >96%. / status: published

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