Sorption Study of Methyl Orange on the Iraqi Kaolinite Clay | Zendy

Ali A. Al-Ma'amar | Zendy

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Sorption Study of Methyl Orange on the Iraqi Kaolinite Clay

Author(s) -

Ali A. Al-Ma'amar

Publication year - 2012

Publication title -

journal of al-nahrain university-science

Language(s) - English

Resource type - Journals

eISSN - 2519-0881

pISSN - 1814-5922

DOI - 10.22401/jnus.15.4.12

Subject(s) - sorption , freundlich equation , desorption , adsorption , kaolinite , methyl orange , reaction rate constant , chemistry , exothermic reaction , diffusion , thermodynamics , materials science , kinetics , mineralogy , organic chemistry , physics , photocatalysis , quantum mechanics , catalysis

The sorption of methyl orange on the kaolinite clay was studied thermodynamically and kinetically, the sorption was of Freundlich type and the multi-layers were formed, and the sorption was a combination of adsorption and absorption, but in some cases the desorption was occurred. The Freundlich constants were calculated to specify the sorption capacity, and sorption intensity. The calculation of thermodynamic parameters revealed that the process was exothermic, ordered, and non-spontaneous at the temperature range(298-328K). Three kinetic models were exploited to calculate the rate constant, diffusion constant, rate of adsorption, and desorption parameter.

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