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Process analysis of aqueous ciprofloxacin adsorption by biochar–magnetite nanocomposites

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Publicado en:SN Applied Sciences vol. 7, no. 10 (Oct 2025), p. 1216
Autor principal: Sharma, Mansi
Otros Autores: Sharma, Khushbu, Kumar, Deepak, Gill, Fateh Singh, Ichikawa, Takayuki, Jain, Ankur, Shrivastava, Kriti
Publicado:
Springer Nature B.V.
Materias:
Magnetite
Antibiotic resistance
Medical wastes
Pollutants
Iron oxides
Adsorbents
Nanocomposites
Hospital wastes
Nanoparticles
Citrus fruits
Water pollution
Adsorption
Efficiency
Adsorptivity
Antibiotics
Activated carbon
Pharmaceuticals
Industrial effluents
Wastewater treatment
Low cost
Oxidation
Hospitals
Charcoal
Ciprofloxacin
Particle size
Surface chemistry
Health risks
Environmental
Acceso en línea:Citation/Abstract
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Resumen:The widespread presence of antibiotics like ciprofloxacin in hospital wastewater poses serious environmental and health risks due to antibiotic resistance. This study presents the synthesis and application of a magnetically separable biochar–magnetite nano-composites for efficient adsorptive removal of ciprofloxacin. Biochar based adsorbents are sustainable, environmentally friendly, low cost and scalable with tuneable surface chemistry and regeneration capacity. In this study, orange peel biochar (CB) was doped with magnetite (Fe3O4) to prepare three different magnetic biochar-magnetite nano-composites CBC-2, CBC-5, CBC-10 which were examined for maximum removal efficiency of ciprofloxacin which is a popular broad-spectrum synthetic fluoroquinolone antibiotic. It is poorly metabolized, frequently excreted from body in unmetabolized and hence reported as a major pollutant in hospital waste water. The best adsorption efficiency was found at pH 8.0 and 298&#xa0;K temperature by CBC-10 composite with the highest adsorption capacity (~ 90%), 1.25 gm.L−1 adsorbent dose, and the fastest equilibrium rate (60&#xa0;min contact time) for the lowest ciprofloxacin concentration of 30 ppm. These results suggested that the biochar magnetite composites can serve as a promising adsorbent for the removal of antibiotic traces in the hospital and pharma industry effluents.Article Highlights<list list-type="bullet"><list-item></list-item> Orange peel waste was turned into a low-cost, eco-friendly material to clean antibiotic pollution from water.<list-item> Magnetic biochar composites showed high efficiency, removing nearly 90% of ciprofloxacin in just 1&#xa0;h.</list-item><list-item> This approach offers a sustainable and scalable way for hospital wastewater treatment.</list-item>
ISSN:2523-3963
2523-3971
DOI:10.1007/s42452-025-07785-6
Fuente:Science Database