Evaluation of the efficiency of a photocatalytic process using the magnetic nanocatalyst (Fe3O4@SiO2@TiO2) in the removal of ceftriaxone from aqueous solutions

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Sobhi Hamid Reza; YEGANE BADI MOJTABA; ESRAFILI ALI; Ghambarian Mahnaz

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Journal Paper

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Journal: Journal of Environmental Health Engineering Year:2020 | Volume:7 | Issue:3 Page(s): 229-243

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Title

Evaluation of the efficiency of a photocatalytic process using the magnetic nanocatalyst (Fe3O4@SiO2@TiO2) in the removal of ceftriaxone from aqueous solutions

Author(s)

Sobhi Hamid Reza | YEGANE BADI MOJTABA | ESRAFILI ALI | Ghambarian Mahnaz | Issue Writer Certificate

Keywords

PhotocatalystQ1

Magnetic nanoparticlesQ1

UV-lightQ1

CeftriaxoneQ1

Abstract

Background & Objectives: Ceftriaxone is an antibiotic which is extensively used to treat a number of various infections. It is mainly accumulated in water and sewage resulting in the environmental and health problems. This study is centered on the evaluation of the efficiency of a photocatalytic process using Fe3O4@SiO2@TiO2 in the removal of Ceftriaxone from aqueous solutions. Methods: This research was based on an experimental-practical study. Fe3O4 @ SiO2 @ TiO2 was initially synthesized via a sol-gel method and characterized by SEM, XRD and EDX analyses. The effects of variables such as pH, catalyst concentration, Ceftriaxone concentration, contact time, reusability tests (n=7) and degree of mineralization were separately assessed in a laboratory scale. The concentration of Ceftriaxone was measured by HPLC at 240 nm. Results: Based on the results obtained, the highest process efficiency of 96. 7% was obtained under the following optimal conditions: concentration of Ceftriaxone 10 mg/L, pH=3, the catalyst dosage of 2 g/L and a time contact of 120 min. At the end of the process, the degree of mineralization was determined to be 83. 7%. Additionally, the data regarding the reusability of the nanocatalyst demonstrated that a 5. 2% loss in the removal efficiency was observed after 7 times of reuse. Finally, the results revealed that the removal process of Ceftriaxone follows the first-order kinetic model. Conclusion: The results demonstrated that the photocatalytic process using the magnetic nanocatalyst (Fe3O4 @ SiO2 @ TiO2) could be effectively used for the removal of Ceftriaxone from aqueous media.

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