Comparison of the heterogeneous photocatalysis of imidacloprid and thiacloprid – reaction mechanism, ecotoxicity, and the effect of matrices
نویسندگان
چکیده
This comparative study is about the heterogeneous photocatalytic degradation of two neonicotinoids, namely imidacloprid and thiacloprid, focusing on differences similarities in their transformation mineralization effect various additives, matrices, inorganic components. Besides dominant role • OH, which was confirmed by pH radical scavengers, direct charge transfer may also contribute to transformation, especially for imidacloprid; partly due its enhanced interaction with TiO 2 surface. There a significant difference change ecotoxicity, decreased thiacloprid but varied according maximum curve imidacloprid, interpreted NO 3 ? formed. Dehalogenation were fast occurred parallel neonicotinoid degradation; however, 20–25% organic carbon could not be removed, suggesting formation hardly oxidizable products. The fluorination has no rates, changed product distribution, dechlorination rate, hindered mineralization, confirming OH-initiated intermediates. negative tap water biologically treated domestic wastewater significant. Although HCO caused slower matrices cannot solely scavenging capacity content. neonicotinoids studied compared photocatalysis besides OH based reaction, enhances hinders ecotoxicity IMIDA increased THIA during treatment can even triple energy requirement
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ژورنال
عنوان ژورنال: Journal of environmental chemical engineering
سال: 2021
ISSN: ['2213-2929', '2213-3437']
DOI: https://doi.org/10.1016/j.jece.2021.106684