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Nonlinear Fitting of Iron Sorption on Bentonite to Theoretical Isotherm Models

Stepova, K. ; Sysa, L. ; Konanets, R.

Fìzika ì hìmìâ tverdogo tìla (Online), 2022-05, Vol.23 (2), p.270-276 [Periódico revisado por pares]

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Título:
Nonlinear Fitting of Iron Sorption on Bentonite to Theoretical Isotherm Models
Autor: Stepova, K. ; Sysa, L. ; Konanets, R.
Assuntos: adsorption ; bentonite ; iron ; microwave ; non-linear fitting
É parte de: Fìzika ì hìmìâ tverdogo tìla (Online), 2022-05, Vol.23 (2), p.270-276
Descrição: 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.
Editor: Vasyl Stefanyk Precarpathian National University
Idioma: Inglês

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