Use of natural clinoptilolite in the preparation of an efficient adsorbent for ciprofloxacin removal from aqueous media(Article)(Open Access)
- aFaculty of Technology and Metallurgy, University of Belgrade, Belgrade, 11120, Serbia
- bInnovation Centre of Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, 11120, Serbia
- cJožef Stefan Institute, Ljubljana, 1000, Slovenia
- dInstitute of Physics, University of Belgrade, Belgrade, 11080, Serbia
Abstract
The adsorption of the antibiotic ciprofloxacin (CIP) from an aqueous solution by natural zeolite, the calcium-rich clinoptilolite (CLI), and magnetite-coated CLI (MAG-CLI) was investigated. Both CLI and MAG-CLI showed a high adsorption affinity towards CIP at 283, 288 and 293 K at a pH of 5. Adsorption kinetics studied for the initial concentrations of 15–75 mg CIP dm−3 follow Lagergren’s pseudo-second order equation and the adsorption is best represented by the Langmuir model. The adsorption mechanism involves strong electrostatic interactions between negatively charged aluminosilicate lattice and the cationic form of CIP accompanied by an ion-exchange reaction. Magnetite coverage (approx. 12 wt.%) induces magnetism, which can facilitate the separation process. The coverage does not influence the adsorption activity of CLI. The leaching test showed that the MAG coating protects the adsorbent from CIP leaching. This is ascribed to interactions between the CIP carboxyl groups and magnetite nano-particles. Antibacterial tests showed strong antibacterial activity of the ciprofloxacin-containing adsorbents towards pathogenic E. coli and S. aureus. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Funding details
| Funding sponsor | Funding number | Acronym |
|---|---|---|
| Horizon 2020 Framework Programme See opportunities by H2020 | H2020 | |
| H2020 Marie Skłodowska-Curie Actions See opportunities by MSCA | 812880,MSCA-ITN-2018 | MSCA |
| 451-03-68/2020-14/200287,451-03-68/2020-14/200135,200287 |
-
1
This research was funded by the European Union\u2019s Horizon 2020 research and innovation program under the Marie Sk\u0142odowska-Curie grant agreement, MSCA-ITN-2018, [grant number 812880], and the Ministry of Education, Science and Technological Development of the Republic of Serbia, [grant numbers 451-03-68/2020-14/200287, 451-03-68/2020-14/200135].
-
2
Funding: This research was funded by the European Union\u2019s Horizon 2020 research and innovation program under the Marie Sk\u0142odowska-Curie grant agreement, MSCA-ITN-2018, [grant number 812880], and the Ministry of Education, Science and Technological Development of the Republic of Serbia, [grant numbers 451-03-68/2020-14/200287, 451-03-68/2020-14/200135].
- ISSN: 2075163X
- Source Type: Journal
- Original language: English
- DOI: 10.3390/min11050518
- Document Type: Article
- Publisher: MDPI AG
Rajić, N.; Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia;
© Copyright 2021 Elsevier B.V., All rights reserved.
Cited by 14 documents
(2024) ChemNanoMat
(2024) Journal of Molecular Liquids
(2024) Journal of Environmental Chemical Engineering