OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Correlation between eletrokinetic mobility and ionic dyes adsorption of Moroccan stevensite

Bouna, Lahcen and Rhouta, Benaïssa and Amjoud, M'barek and Jada, Amane and Maury, Francis and Daoudi, Lahcen and Senocq, François Correlation between eletrokinetic mobility and ionic dyes adsorption of Moroccan stevensite. (2010) Applied Clay Science, vol. 48 (n° 3). pp. 527-530. ISSN 0169-1317

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
432kB

Official URL: http://dx.doi.org/10.1016/j.clay.2010.02.004

Abstract

This study aims at establishing a correlation between the electrical charge of Moroccan stevensite particles and ionic dyes adsorption. The electrophoretic mobility, (Ue), of the stevensite particles in water, was measured at pH 2.5–12 by microelectrophoresis. At pH between 2.5 and 8, Ue remained constant (Ue = − 1.6 10− 8 m2/(V s)), as resulting from the permanent charge of the clay mineral planar surfaces. At pH > 8, the magnitude of electrophoretic mobility increased (Ue = − 2.7 10− 8 m2/(V s)) due to the deprotonation of silanol groups on the surfaces. The anionic Orange G adsorption at the clay mineral–water interface was negligible whereas the methylene blue cations were strongly adsorbed due to the electrostatic attraction.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Applied Clay Science website :http://www.sciencedirect.com/science/journal/01691317
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > University of Cadi Ayyad - UCAM (MOROCCO)
Other partners > Université de Haute Alsace - UHA (FRANCE)
Laboratory name:
Statistics:download
Deposited By: Leila Abdelouhab
Deposited On:18 Apr 2011 16:26

Repository Staff Only: item control page