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Nanofiltration of solutions containing organic and inorganic salts: Relationship between feed and permeate proportions

Zhu, Yin and Galier, Sylvain and Roux-de Balmann, Hélène Nanofiltration of solutions containing organic and inorganic salts: Relationship between feed and permeate proportions. (2020) Journal of Membrane Science, 613. 118380. ISSN 0376-7388

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Official URL: https://doi.org/10.1016/j.memsci.2020.118380

Abstract

Nanofiltration can be considered for the purification of valuable products obtained by fermentation, like organic acids. In this work, nanofiltration experiments are carried out with synthetic solutions of different compositions containing acetate (Ac), propionate (Pr), and butyrate (Bu), as well as inorganic salts (NaCl). Although the retention of charged solutes can be significantly modified according to the composition of the solution, it is observed that there is a filtration flux above which the solutes proportions in the permeate remain constant. These proportions do not depend on the total concentration but only on the solutes proportions in the feed. Finally, individual solute transfer is found to vary linearly with the total solute flux. Similar trends are observed with two NF membranes despite their different properties.

Item Type:Article
HAL Id:hal-02954076
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
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Deposited On:30 Sep 2020 15:21

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