Comparing the Efficiency of UV/TiO2 and UV/O3 Processes in Degradation of Sulfonamide Antibiotics in Aquatic Solution
Background and purpose: Emerging pollutants such as antibiotics are resistant to biodegradation. The aim of this study was to compare the effect of photocatalytic and Ozonation photolysis on decomposition of Sulfonamide antibiotics (Sulfacetamide, Sulfathiazole, Sulfamethoxazole, and Sulfadiazine) i...
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| Format: | Article |
| Language: | English |
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Mazandaran University of Medical Sciences
2021-07-01
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| Series: | Journal of Mazandaran University of Medical Sciences |
| Subjects: | |
| Online Access: | http://jmums.mazums.ac.ir/article-1-16261-en.html |
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| author | Mahsa Tahergorabi Mohammad Malakootian Samaneh Dehghan Ali Esrafili Majid Kermani Mojtaba Yegane Badi |
| author_facet | Mahsa Tahergorabi Mohammad Malakootian Samaneh Dehghan Ali Esrafili Majid Kermani Mojtaba Yegane Badi |
| author_sort | Mahsa Tahergorabi |
| collection | DOAJ |
| description | Background and purpose: Emerging pollutants such as antibiotics are resistant to biodegradation. The aim of this study was to compare the effect of photocatalytic and Ozonation photolysis on decomposition of Sulfonamide antibiotics (Sulfacetamide, Sulfathiazole, Sulfamethoxazole, and Sulfadiazine) in aquatic environments.
Materials and methods: In this study, experiments were conducted discontinuously. The effect of some parameters, including pH, initial antibiotic concentration, ozone concentration, contact time, and concentration of TiO2 on degradation of Sulfonamide antibiotic was investigated. Characteristics of this catalyst were analyzed using FTIR, XRD, SEM, and EDX techniques. The concentrations of antibiotics were measured by an HPLC analyzer equipped with a UV detector at a wavelength of 270 nm.
Results: The highest percentage of sulfonamide removal under optimal conditions (pH 5, initial concentration of antibiotics= 10 mg/l, ozone concentration= 0.22 g/h, and catalyst concentration= 1 g/l) were obtained by photocatalytic and photolysis processes (92.1% and 100%, respectively). Intermediate products produced under these conditions included acetic acid, butyric acid, and low molecular weight products. TOC removal efficiencies of sulfonamides by photocatalytic and ozonation photolys were 80% and 79.6%, respectively.
Conclusion: The study showed that the rate of ozonation photolysis reaction in the removal of sulfonamides was 2.6 times faster than the photocatalytic process. |
| first_indexed | 2024-04-10T20:33:25Z |
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| id | doaj.art-f5d1e4148fd043ec932c0cc35b77e5f7 |
| institution | Directory Open Access Journal |
| issn | 1735-9260 1735-9279 |
| language | English |
| last_indexed | 2024-04-10T20:33:25Z |
| publishDate | 2021-07-01 |
| publisher | Mazandaran University of Medical Sciences |
| record_format | Article |
| series | Journal of Mazandaran University of Medical Sciences |
| spelling | doaj.art-f5d1e4148fd043ec932c0cc35b77e5f72023-01-25T05:14:26ZengMazandaran University of Medical SciencesJournal of Mazandaran University of Medical Sciences1735-92601735-92792021-07-01311987386Comparing the Efficiency of UV/TiO2 and UV/O3 Processes in Degradation of Sulfonamide Antibiotics in Aquatic SolutionMahsa Tahergorabi0Mohammad Malakootian1Samaneh Dehghan2Ali Esrafili3Majid Kermani4Mojtaba Yegane Badi5 Assistant Professor, Department of Environmental Health Engineering, School of Public Health, Jiroft University of Medical Sciences, Jiroft, Iran Professor, Department of Environmental Health Engineering, Environmental Health Engineering Research Center, Faculty of Public Health, Kerman University of Medical Sciences, Kerman, Iran Assistant Professor, Department of Environmental Health Engineering, Faculty of Public Health, Mazandaran University of Medical Sciences, Sari, Iran Associate Professor, Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran Professor, Research Center for Environmental Health Technology, Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran Background and purpose: Emerging pollutants such as antibiotics are resistant to biodegradation. The aim of this study was to compare the effect of photocatalytic and Ozonation photolysis on decomposition of Sulfonamide antibiotics (Sulfacetamide, Sulfathiazole, Sulfamethoxazole, and Sulfadiazine) in aquatic environments. Materials and methods: In this study, experiments were conducted discontinuously. The effect of some parameters, including pH, initial antibiotic concentration, ozone concentration, contact time, and concentration of TiO2 on degradation of Sulfonamide antibiotic was investigated. Characteristics of this catalyst were analyzed using FTIR, XRD, SEM, and EDX techniques. The concentrations of antibiotics were measured by an HPLC analyzer equipped with a UV detector at a wavelength of 270 nm. Results: The highest percentage of sulfonamide removal under optimal conditions (pH 5, initial concentration of antibiotics= 10 mg/l, ozone concentration= 0.22 g/h, and catalyst concentration= 1 g/l) were obtained by photocatalytic and photolysis processes (92.1% and 100%, respectively). Intermediate products produced under these conditions included acetic acid, butyric acid, and low molecular weight products. TOC removal efficiencies of sulfonamides by photocatalytic and ozonation photolys were 80% and 79.6%, respectively. Conclusion: The study showed that the rate of ozonation photolysis reaction in the removal of sulfonamides was 2.6 times faster than the photocatalytic process.http://jmums.mazums.ac.ir/article-1-16261-en.htmlantibiotics sulfonamidesphotocatalyticozonation photolysis |
| spellingShingle | Mahsa Tahergorabi Mohammad Malakootian Samaneh Dehghan Ali Esrafili Majid Kermani Mojtaba Yegane Badi Comparing the Efficiency of UV/TiO2 and UV/O3 Processes in Degradation of Sulfonamide Antibiotics in Aquatic Solution Journal of Mazandaran University of Medical Sciences antibiotics sulfonamides photocatalytic ozonation photolysis |
| title | Comparing the Efficiency of UV/TiO2 and UV/O3 Processes in Degradation of Sulfonamide Antibiotics in Aquatic Solution |
| title_full | Comparing the Efficiency of UV/TiO2 and UV/O3 Processes in Degradation of Sulfonamide Antibiotics in Aquatic Solution |
| title_fullStr | Comparing the Efficiency of UV/TiO2 and UV/O3 Processes in Degradation of Sulfonamide Antibiotics in Aquatic Solution |
| title_full_unstemmed | Comparing the Efficiency of UV/TiO2 and UV/O3 Processes in Degradation of Sulfonamide Antibiotics in Aquatic Solution |
| title_short | Comparing the Efficiency of UV/TiO2 and UV/O3 Processes in Degradation of Sulfonamide Antibiotics in Aquatic Solution |
| title_sort | comparing the efficiency of uv tio2 and uv o3 processes in degradation of sulfonamide antibiotics in aquatic solution |
| topic | antibiotics sulfonamides photocatalytic ozonation photolysis |
| url | http://jmums.mazums.ac.ir/article-1-16261-en.html |
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