Specific adsorption of chromium species on kaolinite surface Article

•  
• Overview
•  
• Research
•  
• Identity
•  
• Additional Document Info
•  
• View All
•  

Overview

abstract

• Specific adsorption of hydrolyzed chromium species on kaolinite surface was studied. Electrokinetic behavior of kaolinite particles in aqueous solutions in the presence of CrCl3 showed that the hydrolyzed chromium species can adsorb on kaolinite surfaces and reverse its charge. This adsorption reached the maximum near the precipitation pH (ppt) of chromium hydroxide. The adsorption followed Langmuir isotherm and was irreversible. It might be resulted from hydrogen bonding between the hydrolyzed metal species and kaolinite surfaces. A novel chemical adsorption model was proposed between kaolinite surfaces and the hydrolyzed multivalent metal species. © 2012 Copyright Taylor and Francis Group, LLC.

authors

• López Valdivieso Alejandro
• Rao F.
• Song S.

publication date

• 2012-01-01

funding provided via

• Consejo Nacional de Ciencia y Tecnología, CONACYT: 213624, 48436-Y, 92506  Grant

published in

• Mineral Processing and Extractive Metallurgy Review  Journal

Research

keywords

• chromium salts; hydrogen bond; specific adsorption; zeta potential Chromium; Hydrogen bonds; Hydrolysis; Kaolinite; Zeta potential; Chemical adsorption; Chromium hydroxide; Chromium salts; Chromium species; Electrokinetic; Langmuir isotherm; Metal species; Multivalent metals; Specific adsorption; Adsorption

Identity

Digital Object Identifier (DOI)

• 10.1080/08827508.2011.562949

Additional Document Info

start page

• 180

end page

• 189

volume

• 33

issue

• 3