Mokete John Phele1,2, Fanyana Mtunzi1,2
1Department of Chemistry, Faculty of Applied and Computer Sciences, Vaal University of Technology, Vanderbijlpark, 1911, South Africa, phelemj85@gmail.com
2Institute of Chemical and Biotechnology, Faculty of Applied and Computer Sciences, Vaal University of Technology Southern Gauteng Science and Technology Park, Sebokeng, 1983, South Africa
ORIGINAL SCIENTIFIC PAPER
ISSN 2637-2150
e-ISSN 2637-2614
UDC 33.853.492:582.683.4
DOI 10.7251/STEDZ2402025P
COBISS.RS-ID 141779457
Received: 24 July 2024.
Accepted: 17 November 2024.
Published: 29 November 2024.
http://stedj-univerzitetpim.com
Corresponding Author:
Mokete John Phele, Department of Chemistry, Faculty of Applied and Computer Sciences, Vaal University of Technology, Vanderbijlpark, 1911, South Africa, phelemj85@gmail.com
Copyright © 2024 Mokete John Phele, & Fanyana Mtunzi; published by UNIVERSITY PIM. This work licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 4.
Citation:
Phele, M., & Mtunzi, F. (2024.). Sequestration of ciprofloxacin from aqueous solutions by nanocomposite obtained via Moringa Oleifera pods and feldspar clay modification. STED Journal, 6(2), 25-38.
ABSTRACT
The environmental hazards of antibiotics have captivated increasing research focus, but their environmental behaviours remain unclear in water sources. Thus, this study focused on exploring the interaction mechanisms between Moringa Oleifera pod-modified feldspar clay (MFC) and ciprofloxacin (CIP) during sorption process. The efficiency of these adsorbents in aqueous solution adsorption of CIP were investigated as a function of pH, time and sorbate concentration. The impact of pH solution and CIP evolution showed that CIP sorption on MFC is strongly reliant on pH solution. Kinetic studies authenticated that the CIP sorption mechanism was a physisorption involving ion exchange and surface complexation mechanisms. The mechanism of CIP sorption on MFC was successfully studied using characterization techniques. The Langmuir and Freundlich isotherm equations were used to analyze the equilibrium isotherm data. The adsorption process fitted well with the second-order kinetics and the Langmuir isotherm equation fitted well with the experimental data. The Langmuir isotherm showed that maximum adsorption capacity was found to be 57.61 mg/g. Thermodynamic factors: ΔG° values of -29 kJ/mol, ΔH° = 17 kJ/mol, and ΔS° = 163 J/mol.k of CIP adsorbed onto MFC indicate that the adsorption was spontaneous and endothermic in nature.
Keywords: Moringa Oleifera, Carbonaceous materials, feldspar clay, Ciprofloxacin, Sorption
