Thermodynamic analysis and influence of the pH value on the biosorption of copper ions onto hazelnut shells

Marković, Marina; Gorgievski, Milan; Štrbac, Nada; Grekulovic, Vesna; Marković, Miljan; Zdravković, Milica; Jovanović, Dalibor

Conference Object Open access M33

EcoTER2024_294-298.pdf (1.14MB)

2024

Marković, Marina
Gorgievski, Milan
Štrbac, Nada
Grekulovic, Vesna
Marković, Miljan
Zdravković, Milica
Jovanović, Dalibor

University of Belgrade, Technical Faculty in Bor

Proceedings [Elektronski izvor] - 31st International conference Ecological Truth & Environmental Research - EcoTER'24, Sokobanja, Serbia, 18-21 June 2024

294

298

English

M33 - Conference paper at an international conference, printed in full

The thermodynamic analysis of the copper ions biosorption process using hazelnut shells as a biosorbent, as well as the influence of the pH value on the biosorption capacity, are presented in this paper. The thermodynamic parameters that were analyzed are: activation energy (Ea), change in Gibbs free energy (∆G0), enthalpy (∆H0), and entropy (∆S0), under standard conditions, at different temperatures (25oC, 35oC, and 45oC). The values of the calculated thermodynamic parameters indicate that the biosorption of copper ions onto hazelnut shells is favored at temperatures lower than the room temperature, that the process itself is endothermic and disordered, in which copper ions are bound to the surface of the hazelnut shell by chemisorption. The pH analysis showed that the pH value of the solution has a significant effect on the biosorption capacity, whereby the biosorption capacity increases proportionally with the increase in the pH value of the solution.

thermodynamic analysis, biosorption, copper ions, pH value, hazelnut shells

ISBN

978-86-6305-152-2

URI

https://repozitorijum.tfbor.bg.ac.rs/handle/...

dc.rights.license	CC-BY-NC-ND
dc.date.accessioned	2024-12-14T09:56:35Z
dc.date.available	2024-12-14T09:56:35Z
dc.date.issued	2024
dc.identifier.isbn	978-86-6305-152-2
dc.identifier.uri	https://repozitorijum.tfbor.bg.ac.rs/handle/123456789/5914
dc.description.abstract	The thermodynamic analysis of the copper ions biosorption process using hazelnut shells as a biosorbent, as well as the influence of the pH value on the biosorption capacity, are presented in this paper. The thermodynamic parameters that were analyzed are: activation energy (Ea), change in Gibbs free energy (∆G0), enthalpy (∆H0), and entropy (∆S0), under standard conditions, at different temperatures (25oC, 35oC, and 45oC). The values of the calculated thermodynamic parameters indicate that the biosorption of copper ions onto hazelnut shells is favored at temperatures lower than the room temperature, that the process itself is endothermic and disordered, in which copper ions are bound to the surface of the hazelnut shell by chemisorption. The pH analysis showed that the pH value of the solution has a significant effect on the biosorption capacity, whereby the biosorption capacity increases proportionally with the increase in the pH value of the solution.
dc.language.iso	en
dc.publisher	University of Belgrade, Technical Faculty in Bor
dc.source	Proceedings [Elektronski izvor] - 31st International conference Ecological Truth & Environmental Research - EcoTER'24, Sokobanja, Serbia, 18-21 June 2024
dc.subject	thermodynamic analysis
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject	biosorption
dc.subject	copper ions
dc.subject	pH value
dc.subject	hazelnut shells
dc.title	Thermodynamic analysis and influence of the pH value on the biosorption of copper ions onto hazelnut shells
dc.type	conferenceObject
dc.type.version	publishedVersion
dc.citation.spage	294
dc.citation.epage	298
dc.citation.rank	M33
dc.creator	Marković, Marina
dc.creator	Gorgievski, Milan
dc.creator	Štrbac, Nada
dc.creator	Grekulovic, Vesna
dc.creator	Marković, Miljan
dc.creator	Zdravković, Milica
dc.creator	Jovanović, Dalibor


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