Degradation of Ibuprofen by the Electro/Fe3+/Peroxydisulfate Process: Reactive Kinetics, Degradation Products and Mechanism
نویسندگان
چکیده
Ibuprofen (IBU), a nonsteroidal anti-inflammatory drug, is one of the most widely used and frequently detected pharmaceuticals personal care products in water bodies. This study examined IBU degradation aquatic solutions via ferric ion activated peroxydisulfate (PDS) coupled with electro-oxidation (EC/Fe3+/PDS). The mechanisms involved three synergistic reactions EC/Fe3+/PDS system, including: (1) electro-oxidation; (2) SO4•? generated from activation PDS by ferrous ions formed cathodic reduction; (3) electron transfer reaction. radical scavenging experiments indicated that •OH dominated oxidation process. effects applied current density, concentration, Fe3+ dosage, initial concentration pH as well inorganic anions humic acid on efficiency, were studied, process followed pseudo-first-order kinetic model. About 99.37% was removed 60 min ((Fe3+ concentration) = 2.0 mM, (PDS 12 (initial 30 mg/L, density 15 mA/cm2, 3). Finally, seven intermediate compounds identified probable pathways system speculated.
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ژورنال
عنوان ژورنال: Catalysts
سال: 2022
ISSN: ['2073-4344']
DOI: https://doi.org/10.3390/catal12030329