Synthesis and Study of Kinetics of CoFe 2 O 4 @SiO 2 ‐Chitosan Adsorbents for Removal of Cadmium and Lead From Water
Year: 2025
Type: article
Abstract: This work investigated CoFe 2 O 4 @SiO 2 ‐chitosan magnetic nanocomposites functionalized with chitosan, which served as an efficient adsorbent for the separation of trace lead (Pb(II)) and cadmium (Cd(II)) in water. The percentage of contaminants extracted from the solution has been measured through atomic absorption spectroscopy (AAS). Furthermore, the pseudo‐first‐order and pseudo‐second‐order kinetic models, along with the Freundlich and Langmuir isotherm models, were applied to evaluate the kinetic and equilibrium data for metal adsorption on adsorbents. The magnetic adsorbent demonstrated excellent magnetic properties and high Langmuir adsorption capacities of 255.10 mg/g for lead (Pb(II)) and 236.41 mg/g for cadmium (Cd(II)) ions. The second‐order kinetic model and Langmuir adsorption isotherm exhibit the most precise adsorption data match. Results suggested that the coordinative interaction of amino groups in chitosan and metal ions was responsible for the occurrence of chemisorption. The adsorption efficiency after the first cycle for Pb(II) and Cd(II) ions was 93% and 89%, respectively. Furthermore, the adsorbents exhibited outstanding reliability, excellent reusable values, and good application performance, with 82% and 79% for lead (Pb(II)) and cadmium (Cd(II)), respectively, after five cycles of adsorption.
DOI: 10.1155/ijce/6198054
Authors: Syed Anam Shaheen Abbas Shah, Shazia Shukrullah, Yasin Khan, Muhammad Umer Saleem, Muhammad Shoaib
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,790
Funder: King Saud University
Award: G3626131914
OpenAlex ID: W4409000695