Correlation between selectivity and surface charge in cobalt spinel ultrafiltration membrane
Identifieur interne : 000C21 ( Main/Merge ); précédent : 000C20; suivant : 000C22Correlation between selectivity and surface charge in cobalt spinel ultrafiltration membrane
Auteurs : S. Condom [France] ; S. Chemlal [Maroc] ; W. Chu [République populaire de Chine] ; M. Persin [France] ; A. Larbot [France]Source :
- Separation and Purification Technology [ 1383-5866 ] ; 2001.
English descriptors
Abstract
In the case of ceramic membranes with pore diameters lower than 10 nm, it was shown that the electrostatic interactions between charged particles and membrane surface charge is an important parameter for explaining the membrane selectivity. So, we have conducted several studies about cobalt spinel membranes (CoAl2O4) fired at 450 and 600°C. The pore size is about 4.3 and 5.1 nm, respectively. Firstly, studies of electrophoretic mobility and surface charge measurements were performed on powder and streaming potential determination was measured on membranes. Secondly, we have measured the rejection rate and we have determined the selectivity of salt solutions with different ionic strengths. A correlation between all the results has been established.
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DOI: 10.1016/S1383-5866(01)00125-3
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II Ecole Nationale de Chimie de Montpellier, 8 rue de l'Ecole Normale-34296 Montpellier Cedex 5</wicri:regionArea><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Languedoc-Roussillon</region><settlement type="city">Montpellier</settlement></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Separation and Purification Technology</title><title level="j" type="abbrev">SEPPUR</title><idno type="ISSN">1383-5866</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="2001">2001</date><biblScope unit="volume">25</biblScope><biblScope unit="issue">1–3</biblScope><biblScope unit="page" from="545">545</biblScope><biblScope unit="page" to="548">548</biblScope></imprint><idno type="ISSN">1383-5866</idno></series><idno type="istex">BD9E8883E5B353FAFDCE7553DECFD7EDBF4D6F0B</idno><idno type="DOI">10.1016/S1383-5866(01)00125-3</idno><idno type="PII">S1383-5866(01)00125-3</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1383-5866</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cobalt spinel</term><term>Mobility</term><term>Selectivity</term><term>Streaming potential</term><term>Ultrafiltration</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In the case of ceramic membranes with pore diameters lower than 10 nm, it was shown that the electrostatic interactions between charged particles and membrane surface charge is an important parameter for explaining the membrane selectivity. So, we have conducted several studies about cobalt spinel membranes (CoAl2O4) fired at 450 and 600°C. The pore size is about 4.3 and 5.1 nm, respectively. Firstly, studies of electrophoretic mobility and surface charge measurements were performed on powder and streaming potential determination was measured on membranes. Secondly, we have measured the rejection rate and we have determined the selectivity of salt solutions with different ionic strengths. A correlation between all the results has been established.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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