Ferrates as Powerful Oxidants in Water Treatment Technologies

Machala, Libor; Zajíček, Petr; Kolařík, J; Martı́n, Tomás; Filip, Jan

doi:10.1007/978-3-030-29840-1_8

Cited by 3 publications

(2 citation statements)

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“…Fe (VI) can oxidize organic compounds such as DNA; therefore, it is also considered as a disinfectant [25]. The process of chemical oxidation, coagulation and flocculation, as well as disinfection, can be performed in one unit when a Fe (VI) oxidation process is used [26]. Among the various methods of antibiotic removal from aquatic solutions, the use of oxidants such as chlorine [18], ozone [19], chlorine dioxide [20], advanced oxidation methods [21] and Fe (VI) [22] is the most common.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Azithromycin Removal from Water Using UV Radiation, Fe (VI) Oxidation Process and ZnO Nanoparticles

Talaiekhozani¹,

Joudaki²,

Banisharif

et al. 2020

IJERPH

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Antibiotics are resistant to biodegradation, and their removal by biological processes is difficult. The purpose of this study was to investigate the removal of azithromycin from water using ultraviolet radiation (UV), Fe (VI) oxidation process and ZnO nanoparticles. The effect of different parameters such as pH, temperature, hydraulic retention time (HRT), the concentration of Fe (VI) and ZnO nanoparticles and UV intensity on the removal of azithromycin from water was investigated. The optimal conditions for the removal of azithromycin were a pH of 2, a temperature of 25 • C, a HRT of 15 min, and a ratio of ZnO nanoparticles to the initial concentration of azithromycin (A/P) of 0.00009 which was fitted by Langmuir isotherm. In addition, the optimal conditions for the removal of azithromycin using UV radiation were a pH of 7, a temperature of 65 • C, a HRT of 60 min, and UV radiation power of 163 mW/cm 2 . For the Fe (VI) oxidation process, the optimal conditions were a pH of 2, a temperature of 50 • C and a HRT of 20 min. Also, the optimal ratio of Fe (VI) to the initial concentration of antibiotic was between 0.011 and 0.012. The results of this study showed that the Fe (VI) oxidation process, UV radiation, and ZnO nanoparticles were efficient methods for the removal of azithromycin from water.

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