ELECTROKINETIC CHARACTERISTICS OF CALCINED KAOLINITE IN AQUEOUS ELECTROLYTIC SOLUTIONS

Tianxing Chen, Yunliang Zhao, Hongliang Li, Jia Liu and Shaoxian Song ()
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Tianxing Chen: School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, P. R. China
Yunliang Zhao: School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, P. R. China
Hongliang Li: School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, P. R. China
Jia Liu: School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, P. R. China
Shaoxian Song: School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, P. R. China

Surface Review and Letters (SRL), 2015, vol. 22, issue 03, 1-5

Abstract: In this work, the electrokinetic characteristics of calcined kaolinite in aqueous solutions has been studied in the presence of the electrolytes ofNaCl,KCl,NH4Cl,NaNO3,MgCl2,CaCl2andAlCl3, through electrophoretic measurement. The experimental results have shown that the zeta potential was closely dependent on the valence and concentration of the electrolytic cations, but not on the type of the cations. The higher the valence and the concentration were, the stronger the impact to the zeta potential was.Al3+could reverse the potential sign from negative to positive. In addition, it was found that the monovalent anions ofCl-and${\rm NO}_{3}^{-}$made a big difference to the zeta potential at the same dosage.

Keywords: Calcined kaolinite; aqueous electrolytic solutions; zeta potential; electrophoretic measurement (search for similar items in EconPapers)
Date: 2015
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DOI: 10.1142/S0218625X15500419

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