Cobalt-Based MOF Material Activates Persulfate to Degrade Residual Ciprofloxacin

Water, Journal Year: 2024, Volume and Issue: 16(16), P. 2299 - 2299

Published: Aug. 15, 2024

Antibiotic residues in water environments have garnered widespread attention. Metal-organic frameworks (MOFs) found extensive applications purification. This study investigates the use of a cobalt-based MOF material, zeolitic imidazolate framework-67(ZIF-67)(Co), for activating persulfate (PMS) to remove residual antibiotic ciprofloxacin (CIP) from aqueous environments. The main findings are as follows: ZIF-67(Co) exhibits insignificant adsorption capacity CIP, and PMS alone does not degrade CIP effectively. However, ZIF-67(Co)-activated demonstrates efficient degradation following pseudo-second-order reaction kinetics. Under optimal conditions catalyst dosage (15 mg) concentration (1.0 mM), removal efficiency reaches 88% after 60 min. Comparative analysis at different initial pH levels shows that highest is reached under mildly acidic conditions, with an 86% rate achieved within min these conditions. Investigation into impact various inorganic anions on ZIF-67(Co)-catalyzed reveals significant inhibition by chloride ions (Cl−), whereas nitrate (NO3-) sulfate (SO42-) minor effects efficiency. system consistent performance across matrices, highlighting ZIF-67(Co)/PMS effective environmental waters. provides technical support residues.

Language: Английский

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Activation of Metabisulfite by Dissolved Fe(III) at Environmentally Relevant Concentrations for Organic Contaminants Degradation

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(3), P. 953 - 953

Published: Jan. 23, 2025

Currently, iron-catalyzed low-valent sulfur species processes are regarded as potentially valuable advanced oxidation (AOPs) in wastewater treatment. As a commonly used the food industry, metabisulfite (MBS) can undergo decomposition to bisulfite when dissolved water. Therefore, combination of MBS with Fe(III) at environmentally relevant concentrations is proposed this study accelerate organic contaminants degradation while simultaneously minimizing production iron sludge. The results show that Fe(III)/MBS process could degrade various contaminants, including acid orange 7 (AO7), and removal efficiency AO7 obeyed pseudo-first-order kinetic. rate constant values exhibited variations depending on initial MBS, pH values, well reaction temperature. Moreover, contribution HO• SO4•− was estimated 51.59% 46.45%, respectively. Furthermore, Cl− showed minimal effect HCO3− humic resulted significant inhibitory degradation. satisfactory achieved three real water bodies. Ultimately, gas chromatography–mass spectrometry theoretical calculations greatly facilitate proposal pathways, N=N cleavage, hydroxylation, hydrogen abstraction. findings indicate may be promising AOP for further application during

Language: Английский

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Recent advancements on elimination of emerging contaminants by homogeneous metal-catalyzed sulfur(Ⅳ) oxidation

Chemical Engineering Science, Journal Year: 2025, Volume and Issue: unknown, P. 121320 - 121320

Published: Feb. 1, 2025

Language: Английский

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Synergistically enhanced heterogeneous activation of dissolved oxygen for aqueous carbamazepine degradation over S(III) coupled with siderite

Environmental Pollution, Journal Year: 2024, Volume and Issue: 363, P. 125048 - 125048

Published: Sept. 30, 2024

Language: Английский

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Highly efficient removal of emerging pollutants caffeine using a novel three-dimensional porous structure CuFe2O4-P activation of sulfite process

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163357 - 163357

Published: May 1, 2025

Language: Английский

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