Nonlinear Fitting of Iron Sorption on Bentonite to Theoretical Isotherm Models

被引：2
|
作者：
Stepova, K. [1 ]
Sysa, L. [1 ]
Konanets, R. [1 ]
机构：
[1] Lviv State Univ Life Safety, Lvov, Ukraine
来源：
PHYSICS AND CHEMISTRY OF SOLID STATE | 2022年 / 23卷 / 02期
关键词：
bentonite; microwave; adsorption; iron; non-linear fitting; ADSORPTION; DIFFUSION; CARBON;
D O I：
10.15330/pcss.23.2.270-276
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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.
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页码：270 / 276
页数：7
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