Analysis and statistical modeling of copper ions biosorption onto calcined chicken eggshell
Loading...
Date
2025
Authors
Marković, Miljan
Gorgievski, Milan
Štrbac, Nada
Grekulović, Vesna
Zdravković, Milica
Marković, Marina
Stanković, Dalibor
Journal Title
Journal ISSN
Volume Title
Publisher
Serbian Chemical Society
Source
Journal of the Serbian Chemical Society
Volume
90
Issue
5
Abstract
The study on the possible use of calcined chicken eggshells as a biosorbent for copper ions removal from aqueous solutions, as well as some comparisons between raw and calcined eggshells, are presented in this paper. SEM-EDS and FTIR analysis of the calcined chicken eggshell samples were performed. In addition, the DTA-TGA analysis on raw chicken eggshells was performed. The influence of various process parameters, such as solution pH, stirring rate, biosorbent mass and Cu2+ concentration, was investigated. The kinetic analysis using four different empirical kinetic models was performed. The equilibrium analysis was done using the Langmuir, Freundlich and Temkin isotherm models. The process was optimized using the response surface methodology based on the Box–Behnken design (RSM-BBD). The obtained results are compared to our previous study on raw eggshells as a biosorbent for Cu2+ removal, in order to determine the justification for biosorbent modification (i.e., the calcination of raw eggshells).
Description
Keywords
biosorption, calcined chicken eggshell, equilibrium, kinetics, Box–Behnken design
Citation
DOI
10.2298/JSC241107017M
Scopus
ISSN
0352-5139
1820-7421
1820-7421
ISBN
License
CC-BY