Influence of common ions during ultrafiltration of mixtures: Part I. Common anions mixtures期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Influence of common ions during ultrafiltration of mixtures: Part I. Common anions mixtures

Authors:	Sylvie Condom Michel Persin Andr Larbot Eric Prouzet

Institution:	^aI.E.M.M., 1919 route de Mende, 34293 Montpellier Cedex 5, France

Abstract:	A lot of experiments were investigated to show the behaviour of an ultrafiltration membrane during the filtration of pure salt solutions. What happens when the filtered solution contains several ions? In this paper, results are given concerning the filtration of mixtures of two salts solutions, salts with a common anion: NaCl + CaCl₂ and Na₂SO₄ + CaSO₄. The surface charge of the membrane is characterized by streaming potential measurements and rejection rates by means of chromatography. These results confirm the adsorption of divalent ions on the surface and a good selectivity for divalent cations.

Keywords:	Ultrafiltration Iso-electric point Rejection rate Streaming potential Mixture Common anion Chloride Sulphate Specific adsorption
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