Sono-photo-Fenton oxidation of bisphenol-A over a LaFeO3 perovskite catalyst

Ultrasonics Sonochemistry
Meral Dükkancı

Abstract

In this study, oxidation of bisphenol-A (IUPAC name - 2,2-(4,4-dihydroxyphenyl, BPA), which is an endocrine disrupting phenolic compound used in the polycarbonate plastic and epoxy resin industry, was investigated using sono-photo-Fenton process under visible light irradiation in the presence of an iron containing perovskite catalyst, LaFeO3. The catalyst prepared by sol-gel method, calcined at 500°C showed a catalytic activity in BPA oxidation using sono-photo-Fenton process with a degradation degree and a chemical oxygen demand (COD) reduction of 21.8% and 11.2%, respectively. Degradation of BPA was studied by using individual and combined advanced oxidation techniques including sonication, heterogeneous Fenton reaction and photo oxidation over this catalyst to understand the effect of each process on degradation of BPA. It was seen, the role of sonication was very important in hybrid sono-photo-Fenton process due to the pyrolysis and sonoluminescence effects caused by ultrasonic irradiation. The prepared LaFeO3 perovskite catalyst was a good sonocatalyst rather than a photocatalyst. Sonication was not only the effective process to degrade BPA but also it was the cost effective process in terms of energy consumption. The stud...Continue Reading

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Citations

Aug 23, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Jianmin WangChin-Pao Huang
Apr 27, 2020·Ecotoxicology and Environmental Safety·Qinqin FengWeiquan Cai
Jun 18, 2018·Ultrasonics Sonochemistry·Olushola S AyandaEliazer B Naidoo

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