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:: Volume 7, Issue 3 (5-2020) ::
jehe 2020, 7(3): 229-243 Back to browse issues page
Evaluation of the efficiency of a photocatalytic process using the magnetic nanocatalyst (Fe3O4@SiO2@TiO2) in the removal of ceftriaxone from aqueous solutions
Hamid Reza Sobhi, Mojtaba Yegane Badi, Ali Esrafili, Mahnaz Ghambarian
Iranian Research and Development Center for Chemical Industries, ACECR, Tehran, Iran
Abstract:   (537 Views)
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.
Keywords: Photocatalyst, Magnetic nanoparticles, UV-light, Ceftriaxone
Full-Text [PDF 1304 kb]   (121 Downloads)    
Type of Study: Research | Subject: Special
Received: 2020/05/13 | Accepted: 2020/05/13 | Published: 2020/05/13
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Sobhi H R, Yegane Badi M, Esrafili A, Ghambarian M. Evaluation of the efficiency of a photocatalytic process using the magnetic nanocatalyst (Fe3O4@SiO2@TiO2) in the removal of ceftriaxone from aqueous solutions. jehe. 2020; 7 (3) :229-243
URL: http://jehe.abzums.ac.ir/article-1-749-en.html


Volume 7, Issue 3 (5-2020) Back to browse issues page
مجله مهندسی بهداشت محیط Journal of Environmental Health Enginering
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