Effect of an acidic treatment on the chemical and charge properties of a nanofiltration membrane |
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| Authors: | R. Navarro,M.P. Gonzá lez,I. Saucedo,M. Avila,P. Prá danos,F. Martí nez,A. Martí n,A. Herná ndez |
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| Affiliation: | 1. Instituto de Investigaciones Científicas, Universidad de Guanajuato, Cerro de la Venada s/n, Pueblito de Rocha, 36040 Guanajuato, Mexico;2. Group of Surfaces and Porous Materials, Dpto. Física Aplicada, Facultad de Ciencias, Universidad de Valladolid, 47071 Valladolid, Spain |
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| Abstract: | In order to improve the performance of a nanofiltration membrane (DS5 DL from Osmonics®) several pre-treatments have been tested. Specifically, the membrane has been immersed, for different times, in an aqueous solution of HF or H3PO4, or of a mixture of both these acids. The chemical and charge properties of the membranes, both pre-treated and untreated, have been studied. |
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| Keywords: | DS5 DL nanofiltration membrane Acid pre-treatment Membrane charge Streaming potential DSPM |
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