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Flexible MIL-53(Al)/Biochar composite for enhanced norfloxacin Removal: Synergistic effects and adsorption mechanisms

Lookup NU author(s): Professor Anh Phan

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Abstract

© 2025 The Korean Society of Industrial and Engineering Chemistry. The presence of antibiotic contaminants, particularly norfloxacin (NRFX) in aquatic environments poses a significant threat to ecosystems and public health, due to their persistence, bioaccumulation, and contribution to antimicrobial resistance. In this study, a novel MIL-53(Al)/biochar composite was synthesized and applied for NRFX removal from wastewater. The synthesized composite exhibited a high surface area (806 m2/g) and mesopore structure, promoting to improved dispersion and adsorption efficiency. Under optimal conditions (20 mg/L NRFX, 40 mg/L adsorbent, 30 °C, 120 min), the composite achieved a maximum adsorption capacity of 357 mg/g, surpassing most reported antibiotic sorbents (< 250 mg/g). The superior performance was attributed to the synergistic integration of MIL-53(Al) flexible “wine-rack” framework with the oxygen-functionalized, mesoporous carbon matrix of bamboo-derived biochar, facilitating multiple adsorption mechanisms, including electrostatic attraction, hydrogen bonding, π–π interactions, and pore-filling effects. These findings highlight the potential of MIL-53(Al)/BC as a cost‑effective, sustainable, and high‑performance adsorbent with strong potential for real-world remediation of antibiotic-contaminated wastewater under diverse environmental conditions.


Publication metadata

Author(s): Phayutcharoenkun P, Akindoye SB, Chandran R, Phan AN, Duong LT, Arpornwichanop A, Prasertcharoensuk P

Publication type: Article

Publication status: Published

Journal: Journal of Industrial and Engineering Chemistry

Year: 2026

Volume: 153

Pages: 836-845

Print publication date: 25/01/2026

Online publication date: 03/11/2025

Acceptance date: 02/11/2025

ISSN (print): 1226-086X

ISSN (electronic): 1876-794X

Publisher: Korean Society of Industrial Engineering Chemistry

URL: https://doi.org/10.1016/j.jiec.2025.11.002

DOI: 10.1016/j.jiec.2025.11.002


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