Original scientific paper

https://doi.org/10.31803/tg-20180207151922

Comparison of Non-Linear and Linear Ho Models Applied for Copper Ions Sorption on Geopolymer

Mario Nikola Mužek orcid.org/0000-0002-9908-6283 ; Faculty of Chemistry and Technology, Department of Inorganic Technology, Ruđera Boškovića 35, 21000 Split, Croatia
Sandra Svilović orcid.org/0000-0003-0300-8932 ; Faculty of Chemistry and Technology, Department of Chemical Engineering, Ruđera Boškovića 35, 21000 Split, Croatia
Jelica Zelić ; Faculty of Chemistry and Technology, Department of Inorganic Technology, Ruđera Boškovića 35, 21000 Split, Croatia

Abstract

The Ho pseudo-second-order model is the best fitting model in describing the sorption of copper ions on synthesized geopolymer for the selected experimental conditions (particle size 0.071–0.090 mm at agitation speed of 240 rpm). For that reason, a comparison of one non-linear and five linear forms of the Ho pseudo-second-order model was made in the present study in order to obtain the optimum sorption kinetic parameters using the experimental kinetic data obtained for the copper ions sorption process on the synthesized geopolymer. Taking all the results into consideration, the non-linear Ho model proved to be more consistent in describing the copper ions sorption on geopolymer for various initial concentrations of sorbent, as well as for various temperatures.

Keywords

copper; geopolymer; Ho pseudo-second-order model; linear regression; non-linear regression

Hrčak ID:

262143

URI

https://hrcak.srce.hr/262143

Publication date:

13.9.2021.

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