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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/18487

Title: The adsorption of Cu(II) ions on bentonite—a kinetic study
Authors: H. Al-Qunaibit, M.
K. Mekhemer, W.
A. Zaghloul, A.
Keywords: Bentonite; Sorption; Kinetics; Desorption; Cu2+ ions
Issue Date: 2005
Publisher: Journal of Colloid and Interface Science
Citation: Physical chemistry,
Abstract: Abstract The kinetics of sorption of Cu2+ on a Saudi clay mineral (bentonite) was investigated at 20 ± 0.5 ◦C using different weights of the clay (0.5, 1.0, 1.5, and 2 g). Each weight represents a certain sample size. The order of the process appeared to be 1 with respect to the Cu2+, and 1.5 with respect to the clay surface area. The rate was found to depend on internal diffusion.,which produced a decrease in the specific rate of sorption as a function of time. Sorption characteristics were described using two site Langmuir isotherms. The desorption experiments proved that Cu2+ ions are chemisorbed on the bentonite surface. The maximum adsorption obtained was 909 mg Cu2+/g clay. This value isof great significance, as it is much higher than any reported one.
URI: http://hdl.handle.net/123456789/18487
Appears in Collections:College of Science

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