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Oxidation of atrazine in aqueous media by solar- enhanced Fenton-like process involving persulfate and ferrous ion



Oxidation of atrazine in aqueous media by solar- enhanced Fenton-like process involving persulfate and ferrous ion



Ecotoxicology and Environmental Safety 137: 35-41



The oxidation of s-triazines (using atrazine (ATZ) as a model compound) by a solar-enhanced Fenton-like process involving persulfate and ferrous ion was studied. A flow-through tubular photoreactor was employed for the experiments. The solar-enhanced oxidative system involving ferrous ion and persulfate (Solar/S2O82-/Fe2+) showed the highest ATZ degradation efficiency when compared with other treatments (unactivated S2O82-, Solar - sunlight only, S2O82-/Fe2+, Solar/S2O82-). Complete degradation of ATZ and 20% reduction in total organic carbon (TOC) content were observed after 30min of the treatment. The in situ generated ОН and SO4-• radicals were shown to be involved in ATZ oxidation using the radical scavengers methanol and tert-butyl alcohol. Furthermore, iron compounds were shown to act not only as catalysts but also as photo-sensitizers, as the introduction of ferrous ion into the reaction mixture led to an increased absorbance of the solution and expansion of the absorption spectrum into the longer wavelength spectral region.

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Accession: 058488278

Download citation: RISBibTeXText

PMID: 27907844

DOI: 10.1016/j.ecoenv.2016.11.013


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