Development of hybrid MIL-53(Al)@CBS for ternary adsorption of tetracyclines antibiotics in water: Physical interpretation of the adsorption mechanism

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abstract

In this study, a hybrid material, MIL-53(Al)@CBS, was synthesized via the solvothermal method, involving the growth of MIL-53(Al) crystals on cocoa bean shell residues (CBS). Physicochemical characterization techniques, including TGA, BET, FTIR, XRD, and SEM, confirmed successful hybridization. MIL-53(Al)@CBS was employed as an adsorbent for antibiotics (oxytetracycline, tetracycline, chlortetracycline) separation from aqueous solutions. Parameters like pH, adsorbent dose, concentration, time, and temperature were systematically evaluated. FTIR revealed 7c -7c interactions and hydrogen bonds between tetracyclines and the adsorbent. MIL-53(Al)@CBS exhibited adsorption, with removal rates up to 98.92%, 99.04%, and 98.24% for OTC, TC, and CTC, respectively. Kinetics suggested adsorption depends on active site availability, with TC adsorbing fastest. Microscopic models showed adsorption on three distinct active site types with different affinities without competition or adherence to the Langmuir hypothesis. Importantly, MIL-53(Al)@CBS maintained high adsorption capacity even after ten washing cycles, highlighting its potential for water treatment.

keywords

METAL-ORGANIC FRAMEWORKS; AQUEOUS-SOLUTION; WASTE-WATER; REMOVAL; PERFORMANCE; MOFS; SULFONAMIDE; ISOTHERM; COBALT; UIO-66

subject category

Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels

authors

Cevallos-Mendoza, JE; Cedeño-Muñoz, JS; Navia-Mendoza, JM; Figueira, F; Amorim, CG; Rodríguez-Díaz, JM; Montenegro, MCBSM

our authors

foto Flávio Alberto da Silva Figueira

Flávio Alberto da Silva Figueira

Junior Researcher

Groups

G1 - Porous Materials and Nanosystems

acknowledgements

Acknowledgements The work was supported through the projects UIDB/50006/2020 and UIDP/50006/2020, funded by FCT/MCTES through national funds. To the Universidad Te cnica de Manabi for its support for the execution of this research.

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Publication Details

type
Journal Article
year
2024
journal
BIORESOURCE TECHNOLOGY
volume
396
article number
130453
publisher
ELSEVIER SCI LTD
issn
0960-8524
isbn
1873-2976
digital object identifier
10.1016/j.biortech.2024.130453
link
hybrid
web of science article identifier
WOS:001197665200001

Journal Metrics (JCR 2019)

Journal Impact Factor
7.539
Journal Impact Factor (5 yrs)
7.27
category normalized journal percentile
92.54

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