Degradation of Ceftriaxone from aquatic solution using a heterogeneous and reusable O3/UV/ Fe3O4@TiO2 systems: operational factors, kinetics and mineralisation. Issue 18 (28th December 2022)

• Record Type: Journal Article
• Authors: Hashemi, Seyed Yaser; Yegane Badi, Mojtaba; Pasalari, Hasan; Azari, Ali; Arfaeinia, Hossein; Kiani, Amin
• Is Part Of: International journal of environmental analytical chemistry. Volume 102:Issue 18(2022)
• Page Start: 6904
• Page End: 6920
• Publication Date: 2022-12-28
• Subjects: Advanced oxidation process -- Ceftriaxone -- Fe3O4@TiO2 -- catalytic oxidation -- ozonation; Ecology -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental chemistry -- Periodicals; Pollution -- Periodicals; 577.14
• DOI: 10.1080/03067319.2020.1817909
• Languages: English
• ISSNs: 0306-7319

Abstract

ABSTRACT: The present study was developed to evaluate and optimise catalytic oxidative degradation of Ceftriaxone (CTX) from aqueous solution using heterogeneous O3 /UV/Fe3 O4 @TiO2 systems. The performance of combined system O3 /UV/Fe3 O4 @TiO2 was examined as a function of operational parameters including catalyst dosage, solution pH, initial concentration and ozone concentration in a batch system. Physical and chemical properties of the catalyst composite materials were characterised using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectra and vibrating sample magnetometer. A high removal efficiency of CTX (92.40%) and total organic carbon (TOC) reduction (72.5%) were obtained under optimum conditions, i.e. (time: 30 min, photocatalyst dosage: 2 g/L, pH: 9, initial CTX concentration: 10 mg/L and ozone dosage: 0.2 g/h). The high removal efficiency of CTX and TOC after six consecutive catalyst uses proved the excellent reusing potential of Fe3 O4 @TiO2 . Quenching experiments confirmed that OH° played major roles compared with h+ and O2 − in photocatalytic degradation of CTX. Integration of O3 /UV/Fe3 O4 @TiO2 exhibited an excellent performance into CTX removal over 30 min reaction, which can be considered as a promising and effective technique for the decontamination of polluted waters.