article · Results in Chemistry
The contamination of water by antibiotics such as ciprofloxacin and ampicillin represents an emerging environmental concern that demands viable treatment methods. To address this, a mixed metal oxide composed of zinc oxide, magnesium oxide and nickel oxide modified with stearicamide was synthesised and evaluated for water decontamination. Characterisation confirmed the material features an average particle size of 12.50 nanometres and a surface area of 13.50 square metres per gramme. In laboratory evaluations, the material removed 83.87 percent of ciprofloxacin and 81.10 percent of ampicillin from aqueous solutions through an electrostatic, spontaneous and exothermic process. Furthermore, the composite showed strong durability, maintaining over 80 percent of its regeneration capacity after 11 cycles of reuse.
Antibiotics in water systems can harm aquatic ecosystems and contribute to wider health concerns. Developing reusable materials that reliably capture pharmaceutical contaminants helps establish cleaner water treatment methods. The high reusability of this composite across multiple treatment cycles indicates a step towards more sustainable water purification processes.
The material could enable water treatment facilities and wastewater managers to remove pharmaceutical pollutants from contaminated water sources. Because the findings are based on laboratory synthesis, characterisation and aqueous sorption tests, the technology is at an early research stage and requires further development and real-world testing before practical deployment.
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The presence of ciprofloxacin (CIP) and ampicillin (AMP) as emerging contaminant in water is a serious global challenge requiring affordable and sustainable solution. In response to this, this study prepared a mixed metal oxide, zinc oxide (ZnO)-magnesium oxide (MgO)-nickel oxide (NiO)@stearicamide for the removal of CIP and AMP from aqueous solution. The properties of [email protected] were confirmed with several analyses including Fourier transformed infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET), transmission electron microscopy (TEM), X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDX). [email protected] has a BET surface area of 13.50 m2 g-1 and an average particle size of 12.50 nm. The sorption of CIP and AMP from solution by [email protected] showed a removal of 83.87% and 81.10%, respectively in a process that can be described by the Langmuir isotherm and electrostatic interaction. The sorption process has enthalpy (ΔH), entropy (ΔS) and free energy change (ΔG) which suggests the process to be spontaneous and exothermic. It is also found that synthesized metal mixed oxide could maintain a regeneration capacity that is >80% even after 11th regeneration cycle. The experimental findings indicate that the self-synthesized [email protected] is a potential material to treat CIP- and AMP-contaminated water source.
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DOI: 10.1016/j.rechem.2022.100457
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