Mechanism and Kinetic Analysis of the Degradation of Atrazine by O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub>
In phosphate buffer, the degradation of ATZ by ozone/(O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub>) under various circumstance was explored and the degradation mechanism and dynamics were probed. The findings revealed that when maintaining the reaction temperature at...
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MDPI AG
2022-04-01
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| Online Access: | https://www.mdpi.com/2073-4441/14/9/1412 |
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| author | Yixin Lu Chenghan Tang Yujie Liu Jiao Chen |
| author_facet | Yixin Lu Chenghan Tang Yujie Liu Jiao Chen |
| author_sort | Yixin Lu |
| collection | DOAJ |
| description | In phosphate buffer, the degradation of ATZ by ozone/(O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub>) under various circumstance was explored and the degradation mechanism and dynamics were probed. The findings revealed that when maintaining the reaction temperature at 25 °C, the H<sub>2</sub>O<sub>2</sub> concentration and the O<sub>3</sub> concentration were 20 mol/L and 20 mol/L, respectively. Moreover, the degradation rate of 5 mol/L ATZ under the influence of O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> was 92.59% in phosphate buffer at pH7. The mechanism analysis showed that HO• and O<sub>3</sub> underwent co-oxidized degradation and that the HO• and O<sub>3</sub> oxidation degradation ratios were close to 1:1 under acidic conditions. Furthermore, HO• oxidative degradation dominated the ATZ degradation process. The kinetics analysis showed that the ATZ kinetics of O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> degradation were more compatible with quasi-second-order reaction kinetics under different temperatures, pH values, and H<sub>2</sub>O<sub>2</sub> concentrations. |
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| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T03:32:59Z |
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| spelling | doaj.art-2921c8a533274d3c91351ac9ba84078f2023-11-23T09:35:25ZengMDPI AGWater2073-44412022-04-01149141210.3390/w14091412Mechanism and Kinetic Analysis of the Degradation of Atrazine by O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub>Yixin Lu0Chenghan Tang1Yujie Liu2Jiao Chen3School of Materials and Environmental Engineering, Chengdu Technological University, Chengdu 611730, ChinaFaculty of Geosciences and Environmental Engineering, Southwest Jiao Tong University, Chengdu 611756, ChinaFaculty of Geosciences and Environmental Engineering, Southwest Jiao Tong University, Chengdu 611756, ChinaSchool of Materials and Environmental Engineering, Chengdu Technological University, Chengdu 611730, ChinaIn phosphate buffer, the degradation of ATZ by ozone/(O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub>) under various circumstance was explored and the degradation mechanism and dynamics were probed. The findings revealed that when maintaining the reaction temperature at 25 °C, the H<sub>2</sub>O<sub>2</sub> concentration and the O<sub>3</sub> concentration were 20 mol/L and 20 mol/L, respectively. Moreover, the degradation rate of 5 mol/L ATZ under the influence of O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> was 92.59% in phosphate buffer at pH7. The mechanism analysis showed that HO• and O<sub>3</sub> underwent co-oxidized degradation and that the HO• and O<sub>3</sub> oxidation degradation ratios were close to 1:1 under acidic conditions. Furthermore, HO• oxidative degradation dominated the ATZ degradation process. The kinetics analysis showed that the ATZ kinetics of O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> degradation were more compatible with quasi-second-order reaction kinetics under different temperatures, pH values, and H<sub>2</sub>O<sub>2</sub> concentrations.https://www.mdpi.com/2073-4441/14/9/1412ozonehydrogen peroxideatrazinedegradation mechanismkinetics |
| spellingShingle | Yixin Lu Chenghan Tang Yujie Liu Jiao Chen Mechanism and Kinetic Analysis of the Degradation of Atrazine by O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> Water ozone hydrogen peroxide atrazine degradation mechanism kinetics |
| title | Mechanism and Kinetic Analysis of the Degradation of Atrazine by O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> |
| title_full | Mechanism and Kinetic Analysis of the Degradation of Atrazine by O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> |
| title_fullStr | Mechanism and Kinetic Analysis of the Degradation of Atrazine by O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> |
| title_full_unstemmed | Mechanism and Kinetic Analysis of the Degradation of Atrazine by O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> |
| title_short | Mechanism and Kinetic Analysis of the Degradation of Atrazine by O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> |
| title_sort | mechanism and kinetic analysis of the degradation of atrazine by o sub 3 sub h sub 2 sub o sub 2 sub |
| topic | ozone hydrogen peroxide atrazine degradation mechanism kinetics |
| url | https://www.mdpi.com/2073-4441/14/9/1412 |
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