Nonlinear Fitting of Iron Sorption on Bentonite to Theoretical Isotherm Models
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Published:2022-05-25
Issue:2
Volume:23
Page:270-276
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ISSN:2309-8589
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Container-title:Physics and Chemistry of Solid State
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language:
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Short-container-title:Phys. Chem. Solid St.
Author:
Stepova K.,Sysa L.,Konanets R.
Abstract
A comparative analysis of adsorption models application for the description of experimental isotherms of iron adsorption on two samples: natural bentonite and bentonite irradiated with microwave irradiation. Sorption isotherms are described using the theories of Langmuir, Freundlich, Redlich-Peterson and Langmuir-Freundlich. The constants and parameters of these equations are determined. Nonlinear fitting of experimental data to the theoretical models of isotherms showed that adsorption by native bentonite corresponds to the three-parameter Redlich-Peterson model, and microwave irradiated - to the Freindlich isotherm. This modeling allows to predict the maximum adsorption capacity, which is 37.7 mg / g of natural bentonite and 64.4 mg / g of the modified sample.
Publisher
Vasyl Stefanyk Precarpathian National University
Subject
Physical and Theoretical Chemistry,Condensed Matter Physics,General Materials Science
Cited by
2 articles.
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