Environmentally safe biopolymer-clay composite for efficient adsorption of ciprofloxacin in fresh and saline solutions

Funding Number

AID-ASHA-G-17-00010

Funding Sponsor

American University in Cairo

Author's Department

Chemistry Department

Second Author's Department

Chemistry Department

Third Author's Department

Chemistry Department

Fourth Author's Department

Chemistry Department

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https://doi.org/10.1016/j.heliyon.2024.e28641

All Authors

Hanaa L. Essa, Hebatullah H. Farghal, Tarek M. Madkour, Mayyada M.H. El-Sayed

Document Type

Research Article

Publication Title

Heliyon

Publication Date

4-15-2024

doi

10.1016/j.heliyon.2024.e28641

Abstract

In alignment with the sustainable development goals (SDGs), recent trends in water management have been directed toward using environmentally friendly bio-based materials for removing contaminants. In this work, we prepared a biocomposite of chitosan (CS) intercalated into acid activated calcium bentonite (Bent). A thermally stable mesoporous CS-Bent composite was prepared with a zeta potential of 15.5 to −34.4 mV in the pH range of 2.22–10. The biocomposite successfully removed up to 99.2% and 50 mg/g of the antibiotic ciprofloxacin HCl (CPX) at pH 5.5 via electrostatic and hydrogen bonding forces. In a multi-component aqueous system of heavy metal and CPX, the composite was more selective to CPX than to the heavy metals and removal of CPX in this system was comparable to that in a single-component system. The composite also maintained its high adsorption efficiency in NaCl solutions which makes it suitable for treating fresh and saline solutions. The combination of CS and bent produced a biodegradable eco-friendly composite characterized with good thermal and surface properties along with efficient and selective adsorption performance.

Comments

Article. Record derived from SCOPUS.

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