Next Article in Journal
U-Pb Age Dating and Geochemistry of Soft-Sediment Deformation Structure-Bearing Late Cretaceous Volcano-Sedimentary Basins in the SW Korean Peninsula and Their Tectonic Implications
Previous Article in Journal
Using Calcined Marls as Non-Common Supplementary Cementitious Materials—A Critical Review
Article

Use of Natural Clinoptilolite in the Preparation of an Efficient Adsorbent for Ciprofloxacin Removal from Aqueous Media

1
Faculty of Technology and Metallurgy, University of Belgrade, 11120 Belgrade, Serbia
2
Innovation Centre of Faculty of Technology and Metallurgy, University of Belgrade, 11120 Belgrade, Serbia
3
Jožef Stefan Institute, 1000 Ljubljana, Slovenia
4
Institute of Physics, University of Belgrade, 11080 Belgrade, Serbia
*
Author to whom correspondence should be addressed.
Academic Editor: Francisco Franco
Minerals 2021, 11(5), 518; https://doi.org/10.3390/min11050518
Received: 5 April 2021 / Revised: 28 April 2021 / Accepted: 5 May 2021 / Published: 14 May 2021
(This article belongs to the Section Environmental Mineralogy and Biogeochemistry)
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. View Full-Text
Keywords: natural zeolite; magnetite; ciprofloxacin; adsorption; disinfection natural zeolite; magnetite; ciprofloxacin; adsorption; disinfection
Show Figures

Graphical abstract

MDPI and ACS Style

Kalebić, B.; Pavlović, J.; Dikić, J.; Rečnik, A.; Gyergyek, S.; Škoro, N.; Rajić, N. Use of Natural Clinoptilolite in the Preparation of an Efficient Adsorbent for Ciprofloxacin Removal from Aqueous Media. Minerals 2021, 11, 518. https://doi.org/10.3390/min11050518

AMA Style

Kalebić B, Pavlović J, Dikić J, Rečnik A, Gyergyek S, Škoro N, Rajić N. Use of Natural Clinoptilolite in the Preparation of an Efficient Adsorbent for Ciprofloxacin Removal from Aqueous Media. Minerals. 2021; 11(5):518. https://doi.org/10.3390/min11050518

Chicago/Turabian Style

Kalebić, Barbara, Jelena Pavlović, Jelena Dikić, Aleksander Rečnik, Sašo Gyergyek, Nikola Škoro, and Nevenka Rajić. 2021. "Use of Natural Clinoptilolite in the Preparation of an Efficient Adsorbent for Ciprofloxacin Removal from Aqueous Media" Minerals 11, no. 5: 518. https://doi.org/10.3390/min11050518

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop