Study on the removal of benzenes pollutants from coal chemical wastewater based on ozonation technology
Benzene, toluene, ethylbenzene and xylene(BTEX)are typical organic pollutants in coal chemical wastewater, which were difficult to be biodegraded under normal conditions, and were often removed by chemical means in the actual production process. This study based on the strong oxidizing free radicals...
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| Format: | Article |
| Language: | English |
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Emergency Management Press
2021-02-01
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| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2021.01.012 |
| _version_ | 1811335752992161792 |
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| author | Peng Siwei He Xuwen Liu Haiyang Bai Yuyong Gu Xiaobing Li Yehong |
| author_facet | Peng Siwei He Xuwen Liu Haiyang Bai Yuyong Gu Xiaobing Li Yehong |
| author_sort | Peng Siwei |
| collection | DOAJ |
| description | Benzene, toluene, ethylbenzene and xylene(BTEX)are typical organic pollutants in coal chemical wastewater, which were difficult to be biodegraded under normal conditions, and were often removed by chemical means in the actual production process. This study based on the strong oxidizing free radicals generated in the process of ozone oxidation, used ozone oxidation technology to remove BTEX in simulated wastewater. The effects of pH value, temperature, ozone dosage and ozone dosing mode on the degradation of BTEX were investigated. The reaction mechanism of degradation by ozone was explored by using tertiary butanol as hydroxyl radical inhibitor and free radical dismutase as superoxide radical inhibitor. The results showed that the degradation effect of BTEX was the best when pH was 8, reaction temperature was 30 ℃, ozone dosage was 3.5 g/L and ozone dosage mode was countercurrent. The existence of superoxide radicals and hydroxyl radicals were the fundamental reason for the effective removal of BTEX from water by ozonization. |
| first_indexed | 2024-04-13T17:29:40Z |
| format | Article |
| id | doaj.art-86422fc850c04bd88048ca2e6fa7aa0d |
| institution | Directory Open Access Journal |
| issn | 2096-2193 |
| language | English |
| last_indexed | 2024-04-13T17:29:40Z |
| publishDate | 2021-02-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj.art-86422fc850c04bd88048ca2e6fa7aa0d2022-12-22T02:37:37ZengEmergency Management Press矿业科学学报2096-21932021-02-016110911410.19606/j.cnki.jmst.2021.01.01220210112Study on the removal of benzenes pollutants from coal chemical wastewater based on ozonation technologyPeng Siwei0He Xuwen1Liu Haiyang2Bai Yuyong3Gu Xiaobing4Li Yehong5Datang Environmental Industry Group Co., Ltd., Beijing 100097, ChinaSchool of Chemical & Environmental Engineering, China University of Mining & Technology-Beijing, Beijing 100083, ChinaDatang Environmental Industry Group Co., Ltd., Beijing 100097, ChinaDatang Environmental Industry Group Co., Ltd., Beijing 100097, ChinaDatang Environmental Industry Group Co., Ltd., Beijing 100097, ChinaDatang Environmental Industry Group Co., Ltd., Beijing 100097, ChinaBenzene, toluene, ethylbenzene and xylene(BTEX)are typical organic pollutants in coal chemical wastewater, which were difficult to be biodegraded under normal conditions, and were often removed by chemical means in the actual production process. This study based on the strong oxidizing free radicals generated in the process of ozone oxidation, used ozone oxidation technology to remove BTEX in simulated wastewater. The effects of pH value, temperature, ozone dosage and ozone dosing mode on the degradation of BTEX were investigated. The reaction mechanism of degradation by ozone was explored by using tertiary butanol as hydroxyl radical inhibitor and free radical dismutase as superoxide radical inhibitor. The results showed that the degradation effect of BTEX was the best when pH was 8, reaction temperature was 30 ℃, ozone dosage was 3.5 g/L and ozone dosage mode was countercurrent. The existence of superoxide radicals and hydroxyl radicals were the fundamental reason for the effective removal of BTEX from water by ozonization.http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2021.01.012ozonationbenzenesradicalsinhibitorreaction mechanism |
| spellingShingle | Peng Siwei He Xuwen Liu Haiyang Bai Yuyong Gu Xiaobing Li Yehong Study on the removal of benzenes pollutants from coal chemical wastewater based on ozonation technology 矿业科学学报 ozonation benzenes radicals inhibitor reaction mechanism |
| title | Study on the removal of benzenes pollutants from coal chemical wastewater based on ozonation technology |
| title_full | Study on the removal of benzenes pollutants from coal chemical wastewater based on ozonation technology |
| title_fullStr | Study on the removal of benzenes pollutants from coal chemical wastewater based on ozonation technology |
| title_full_unstemmed | Study on the removal of benzenes pollutants from coal chemical wastewater based on ozonation technology |
| title_short | Study on the removal of benzenes pollutants from coal chemical wastewater based on ozonation technology |
| title_sort | study on the removal of benzenes pollutants from coal chemical wastewater based on ozonation technology |
| topic | ozonation benzenes radicals inhibitor reaction mechanism |
| url | http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2021.01.012 |
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