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http://dx.doi.org/10.11001/jksww.2020.34.3.201

Adsorption characteristic of Cu(II) and phosphate using non-linear and linear isotherm equation for chitosan bead  

Kim, Taehoon (Department of Civil Engineering, Sangmyung University)
An, Byungryul (Department of Civil Engineering, Sangmyung University)
Publication Information
Journal of Korean Society of Water and Wastewater / v.34, no.3, 2020 , pp. 201-210 More about this Journal
Abstract
2 (Langmuir, Freundlich, Elovich, Temkin, and Dubinin-Radushkevich) and 3 (Sips and Redlich-Peterson)-parameter isotherm models were applied to evaluated for the applicability of adsorption of Cu(II) and/or phosphate isotherm using chitosan bead. Non-linear and linear isotherm adsorption were also compared on each parameter with coefficient of determination (R2). Among 2-parameter isotherms, non-linear Langmuir and Freundlich isotherm showed relatively higher R2 and appropriate maximum uptake (qm) than other isotherm equation although linear Dubinin-Radushkevich obtained highest R2. 3-parameter isotherm model demonstrated more reasonable and accuracy results than 2-parmeter isotherm in both non-linear and linear due to the addition of one parameter. The linearization for all of isotherm equation did not increase the applicability of adsorption models when error experiment data was included.
Keywords
Adsorption; Isotherm; Cu(II); Phosphate;
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Times Cited By KSCI : 2  (Citation Analysis)
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