Performance and Mechanism of Chlorine Dioxide on BTEX Removal in Liquid and Indoor Air
With the development of the chemical industry, benzene, toluene, ethylbenzene, and xylene (BTEX) have gradually become the major indoor air pollutants. Various gas treatment techniques are widely used to prevent the physical and mental health hazards of BTEX in semi-enclosed spaces. Chlorine dioxide...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/11/4342 |
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| author | Anlong Wang Yina Qiao Yufan Zhang Riya Jin Jiaoqin Liu Zengdi He Mengye Jia Jingshuai Gao Chengjie Guo |
| author_facet | Anlong Wang Yina Qiao Yufan Zhang Riya Jin Jiaoqin Liu Zengdi He Mengye Jia Jingshuai Gao Chengjie Guo |
| author_sort | Anlong Wang |
| collection | DOAJ |
| description | With the development of the chemical industry, benzene, toluene, ethylbenzene, and xylene (BTEX) have gradually become the major indoor air pollutants. Various gas treatment techniques are widely used to prevent the physical and mental health hazards of BTEX in semi-enclosed spaces. Chlorine dioxide (ClO<sub>2</sub>) is an alternative to chlorine as a secondary disinfectant with a strong oxidation ability, a wide range of action, and no carcinogenic effects. In addition, ClO<sub>2</sub> has a unique permeability which allows it to eliminate volatile contaminants from the source. However, little attention has been paid to the removal of BTEX by ClO<sub>2</sub>, due to the difficulty of removing BTEX in semi-enclosed areas and the lack of testing methods for the reaction intermediates. Therefore, this study explored the performance of ClO<sub>2</sub> advanced oxidation technology on both liquid and gaseous benzene, toluene, o-xylene, and m-xylene. The results showed that ClO<sub>2</sub> was efficient in the removal of BTEX. The byproducts were detected by gas chromatography-mass spectrometry (GC-MS) and the reaction mechanism was speculated using the ab initio molecular orbital calculations method. The results demonstrated that ClO<sub>2</sub> could remove the BTEX from the water and the air without causing secondary pollution. |
| first_indexed | 2024-03-11T03:02:06Z |
| format | Article |
| id | doaj.art-e38aba63cf734e1cb9f601ec32d65972 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T03:02:06Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-e38aba63cf734e1cb9f601ec32d659722023-11-18T08:15:23ZengMDPI AGMolecules1420-30492023-05-012811434210.3390/molecules28114342Performance and Mechanism of Chlorine Dioxide on BTEX Removal in Liquid and Indoor AirAnlong Wang0Yina Qiao1Yufan Zhang2Riya Jin3Jiaoqin Liu4Zengdi He5Mengye Jia6Jingshuai Gao7Chengjie Guo8School of Environment and Safety Engineering, North University of China, Taiyuan 030051, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan 030051, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan 030051, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan 030051, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan 030051, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan 030051, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan 030051, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan 030051, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan 030051, ChinaWith the development of the chemical industry, benzene, toluene, ethylbenzene, and xylene (BTEX) have gradually become the major indoor air pollutants. Various gas treatment techniques are widely used to prevent the physical and mental health hazards of BTEX in semi-enclosed spaces. Chlorine dioxide (ClO<sub>2</sub>) is an alternative to chlorine as a secondary disinfectant with a strong oxidation ability, a wide range of action, and no carcinogenic effects. In addition, ClO<sub>2</sub> has a unique permeability which allows it to eliminate volatile contaminants from the source. However, little attention has been paid to the removal of BTEX by ClO<sub>2</sub>, due to the difficulty of removing BTEX in semi-enclosed areas and the lack of testing methods for the reaction intermediates. Therefore, this study explored the performance of ClO<sub>2</sub> advanced oxidation technology on both liquid and gaseous benzene, toluene, o-xylene, and m-xylene. The results showed that ClO<sub>2</sub> was efficient in the removal of BTEX. The byproducts were detected by gas chromatography-mass spectrometry (GC-MS) and the reaction mechanism was speculated using the ab initio molecular orbital calculations method. The results demonstrated that ClO<sub>2</sub> could remove the BTEX from the water and the air without causing secondary pollution.https://www.mdpi.com/1420-3049/28/11/4342benzenetoluenexyleneClO<sub>2</sub>semi-enclosed spaceab initio |
| spellingShingle | Anlong Wang Yina Qiao Yufan Zhang Riya Jin Jiaoqin Liu Zengdi He Mengye Jia Jingshuai Gao Chengjie Guo Performance and Mechanism of Chlorine Dioxide on BTEX Removal in Liquid and Indoor Air Molecules benzene toluene xylene ClO<sub>2</sub> semi-enclosed space ab initio |
| title | Performance and Mechanism of Chlorine Dioxide on BTEX Removal in Liquid and Indoor Air |
| title_full | Performance and Mechanism of Chlorine Dioxide on BTEX Removal in Liquid and Indoor Air |
| title_fullStr | Performance and Mechanism of Chlorine Dioxide on BTEX Removal in Liquid and Indoor Air |
| title_full_unstemmed | Performance and Mechanism of Chlorine Dioxide on BTEX Removal in Liquid and Indoor Air |
| title_short | Performance and Mechanism of Chlorine Dioxide on BTEX Removal in Liquid and Indoor Air |
| title_sort | performance and mechanism of chlorine dioxide on btex removal in liquid and indoor air |
| topic | benzene toluene xylene ClO<sub>2</sub> semi-enclosed space ab initio |
| url | https://www.mdpi.com/1420-3049/28/11/4342 |
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