Tetracycline Degradation by Activated Persulfate with Enhancement of ZIF-67 Loaded Wood-Microreactor
Journal of environmental chemical engineering(2024)
Abstract
Antibiotics exhibit high persistence and ecotoxicity in aquatic environments, and numerous existing methods for their degradation are either expensive or inefficient. In this study, a wood-based microreaction system (ZIF-67@FDNW) was developed for the efficient degradation of antibiotics. The microreaction system consists of a wood-based microreactor, in which ZIF-67 is in situ loaded, and a PMS solution. The wood-based microreactors are fabricated through the selective removal of lignin and hemicellulose from natural wood, followed by subsequent chemical modification. The loading of ZIF-67 onto the surface of the wood-based microreactor enables the catalytic degradation of tetracycline using persulfate (PMS) as the oxidant. The microreactor was characterized using SEM, EDS, FT-IR, XRD, and XPS techniques. Additionally, the kinetics, degradation performance, and underlying principles of the microreactor in the PMS system were thoroughly investigated. The wood-based microreactor exhibits high efficiency (94 %) and degradation rates under varying pH values and initial concentrations. Furthermore, it demonstrates remarkable regeneration capability (The degradation efficiency over a 12-hour period remains consistently high at 85 %) and stability. This study expands the application of wood in antibiotic wastewater treatment and presents a novel approach utilizing MOFs catalyzed PMS system for TCH removal from water environments.
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Key words
Wood -based microreactor,ZIF-67,Tetracycline hydrochloride,PMS
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