Adsorption isotherms for copper ions biosorption onto onion peels
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Date
2023
Authors
Gorgievski, Milan
Marković, Miljan
Štrbac, Nada
Grekulović, Vesna
Zdravković, Milica
Journal Title
Journal ISSN
Volume Title
Publisher
University of Belgrade, Technical Faculty in Bor
Source
Proceedings - 30th International Conference Ecological Truth & Environmental Research - EcoTER'23, 20-23 June 2023, Serbia, 2023, 335-340
Volume
Issue
Abstract
Langmuir, Freundlich, and Temkin isotherm models were used to study the equilibrium and mechanism of biosorption of copper ions onto onion peels under batch conditions. Isotherm parameters were calculated from the line graphs according to each model. The results obtained on the basis of correlation coefficients, show that the Freundlich isotherm model (R2 = 0.964) is in good agreement with the analyzed experimental data. This model assumes that the surface energy of the adsorbent is heterogeneous, strong binding sites are occupied first, and that the binding energy decreases as the number of occupied adsorbent sites increases.
Description
Keywords
adsorption isotherms, copper ions, onion peels, biosorption
Citation
DOI
Scopus
ISSN
ISBN
978-86-6305-137-9
License
CC-BY-NC-ND