Effective adsorption of ciprofloxacin hydrochloride from aqueous solutions using metal-organic framework

ABSTRACT

Metal organic frameworks (MOFs) have become material of special attention due to their high porosity and large surface area. Adsorptive removal of ciprofloxacin hydrochloride using MOFs from aqueous waste and real wastewater has been studied in this work. The MOF-5 synthesized showed higher adsorption capacity as compared to activated charcoal. The adsorption satisfies the pseudo-second-order kinetic model and adsorption isotherm is very well explained by the Freundlich and the Sips isotherm. The adsorption mechanism may be explained by the electrostatic interactions of the pharmaceutical compounds and the MOF-5 surface. Finally, it can be concluded that MOF-5 has shown a great potential for their application in wastewater treatment technology development.

KEYWORDS:

• Metal organic frameworks
• adsorption
• isotherm
• pseudo-second-order kinetics
• adsorption capacity

Acknowledgments

The analytical facility provided by the UGC-NRC (University Grants Commission-Networking Resource Center) is highly acknowledged.

Declaration of interest

The authors have no conflict of interest. The work is original and has not been published elsewhere.

Additional information

Funding

The authors acknowledge the financial support provide by the Department of Science and Technology (DST-GOI).