Sono-photo-Fenton oxidation of bisphenol-A over a LaFeO3 perovskite catalyst
Küçük Resim Yok
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Bv
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
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 degrees 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 studies show that the energy consumption is lower in the sono-Fenton process than those in the photo-Fenton and sono-photo-Fenton processes.
Açıklama
15th Meeting of the European-Society-of-Sonochemistry (ESS) -- JUN 27-JUL 01, 2016 -- Bogazici Univ, Istanbul, TURKEY
Anahtar Kelimeler
Bisphenol-A, Sono-photo-Fenton, Perovskite catalyst, Energy consumption
Kaynak
Ultrasonics Sonochemistry
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
40
