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High-performance membranes with full pH-stability.

ABSTRACT: 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%.

SUBMITTER: Daems N

PROVIDER: S-EPMC9082047 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature

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High-performance membranes with full pH-stability.

Daems Nick N Milis Sam S Verbeke Rhea R Szymczyk Anthony A Pescarmona Paolo P PP Vankelecom Ivo F J IFJ

RSC advances 20180226 16

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<sup>-1</sup> m<sup>-2</sup> bar< ...[more]

PMID: 35539860

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