Efficient removal of sparfloxacin antibiotic from water using sulfonated graphene oxide: Kinetics, thermodynamics, and environmental implications.

Autor: Shaha CK; Department of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh.; Veterinary Drug Residue Analysis Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment (AERE), Gonokbari, Savar, Dhaka 1349, Bangladesh., Mahmud MAA; Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA., Saha S; Department of Electrical and Electronic Engineering, Bangladesh University of Engineering and Technology, Dhaka 1205, Bangladesh., Karmaker S; Department of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh., Saha TK; Department of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh.
Jazyk: angličtina
Zdroj: Heliyon [Heliyon] 2024 Jun 25; Vol. 10 (13), pp. e33644. Date of Electronic Publication: 2024 Jun 25 (Print Publication: 2024).
DOI: 10.1016/j.heliyon.2024.e33644
Abstrakt: Pharmaceutical contamination poses a significant threat to global health. Due to their high solubility in water, antibiotics are difficult to remove. This study produced and used sulfonated graphene oxide (SGO) to adsorb sparfloxacin from aquatic environments. UV-Visible, Fourier transform infrared (FTIR), X-ray diffraction (XRD), XPS, SEM, TEM, EDX, particle size, Thermogravimetric analysis (TGA), and acid-base titration were used to characterize synthesized SGO particles. The BET technique determined SGO's surface area (32.25 m 2 /g). The calculated pH PZC of SGO was 2.5. Sparfloxacin adsorption onto SGO was analyzed using adsorption duration, medium pH, adsorbent dosages, antibiotic concentration, cations, and solution temperature. The pseudo-second-order kinetic model better described experimental kinetic data than the pseudo-first-order and Elovich models. Equilibrium isotherm data supported the Langmuir model, revealing a peak absorption capacity of 1428.57 μmol/g at 25 °C. The kinetic and isotherm models' applicability was assessed using error analysis. A thermodynamic analysis revealed an endothermic, spontaneous adsorption process with a change in entropy (Δ S ) of 114.15 J/mol K and enthalpy (Δ H ) of 8.44 kJ/mol. A regeneration analysis showed that SGO adsorption efficiency topped 86.4 % after five cycles.
Competing Interests: The authors declare the following financial interests/personal relationships which may be considered as potential competing interests:Tapan Kumar Saha reports financial support was provided by Alexander von Humboldt Foundation. Not Applicable If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(© 2024 Published by Elsevier Ltd.)
Databáze: MEDLINE
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