Removal and mineralization of toluene under VUV/UV lamp irradiation in humid air: Effect of light wavelength, O2 and H2O
VUV/UV photodegradation is a promising method that utilizes energetic photons and reactive oxygen species (ROS) generated via the photo-dissociation of H2O and O2 to degrade VOCs. In the paper, we investigated the efficiency of removal and mineralization in humid air and the effects of key factors....
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-10-01
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| Series: | Arabian Journal of Chemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535222004245 |
| _version_ | 1798036374997172224 |
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| author | Xue Sun Wenhui Wang Chaolin Li |
| author_facet | Xue Sun Wenhui Wang Chaolin Li |
| author_sort | Xue Sun |
| collection | DOAJ |
| description | VUV/UV photodegradation is a promising method that utilizes energetic photons and reactive oxygen species (ROS) generated via the photo-dissociation of H2O and O2 to degrade VOCs. In the paper, we investigated the efficiency of removal and mineralization in humid air and the effects of key factors. Toluene of 4–20 ppm can be almost completely removed in 60 s and mineralization efficiency is above 55% at 25 min. 185 nm ultraviolet light plays a key role in the rapid removal and mineralization of toluene. Appropriate amount of O2 and H2O promote the removal of toluene due to the generation of ROS. Based on the intermediates and degradation pathway analysis, it is found that in the presence of O2, degradation pathways of toluene are more abundant and fewer linear-chain aldehydes are produced, thus resulting in higher mineralization efficiency. This work highlights the importance of practical application of VUV/UV photodegradation in humid air. |
| first_indexed | 2024-04-11T21:12:00Z |
| format | Article |
| id | doaj.art-7afd0187979e4412a7ee1e9c89bea867 |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-04-11T21:12:00Z |
| publishDate | 2022-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-7afd0187979e4412a7ee1e9c89bea8672022-12-22T04:03:00ZengElsevierArabian Journal of Chemistry1878-53522022-10-011510104108Removal and mineralization of toluene under VUV/UV lamp irradiation in humid air: Effect of light wavelength, O2 and H2OXue Sun0Wenhui Wang1Chaolin Li2School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen 518055, ChinaSchool of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen 518055, China; Corresponding author.School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen 518055, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; Corresponding author.VUV/UV photodegradation is a promising method that utilizes energetic photons and reactive oxygen species (ROS) generated via the photo-dissociation of H2O and O2 to degrade VOCs. In the paper, we investigated the efficiency of removal and mineralization in humid air and the effects of key factors. Toluene of 4–20 ppm can be almost completely removed in 60 s and mineralization efficiency is above 55% at 25 min. 185 nm ultraviolet light plays a key role in the rapid removal and mineralization of toluene. Appropriate amount of O2 and H2O promote the removal of toluene due to the generation of ROS. Based on the intermediates and degradation pathway analysis, it is found that in the presence of O2, degradation pathways of toluene are more abundant and fewer linear-chain aldehydes are produced, thus resulting in higher mineralization efficiency. This work highlights the importance of practical application of VUV/UV photodegradation in humid air.http://www.sciencedirect.com/science/article/pii/S1878535222004245VUV/UV lampIn humid airVOCsDegradation pathwaysVUV/UV photodegradation |
| spellingShingle | Xue Sun Wenhui Wang Chaolin Li Removal and mineralization of toluene under VUV/UV lamp irradiation in humid air: Effect of light wavelength, O2 and H2O Arabian Journal of Chemistry VUV/UV lamp In humid air VOCs Degradation pathways VUV/UV photodegradation |
| title | Removal and mineralization of toluene under VUV/UV lamp irradiation in humid air: Effect of light wavelength, O2 and H2O |
| title_full | Removal and mineralization of toluene under VUV/UV lamp irradiation in humid air: Effect of light wavelength, O2 and H2O |
| title_fullStr | Removal and mineralization of toluene under VUV/UV lamp irradiation in humid air: Effect of light wavelength, O2 and H2O |
| title_full_unstemmed | Removal and mineralization of toluene under VUV/UV lamp irradiation in humid air: Effect of light wavelength, O2 and H2O |
| title_short | Removal and mineralization of toluene under VUV/UV lamp irradiation in humid air: Effect of light wavelength, O2 and H2O |
| title_sort | removal and mineralization of toluene under vuv uv lamp irradiation in humid air effect of light wavelength o2 and h2o |
| topic | VUV/UV lamp In humid air VOCs Degradation pathways VUV/UV photodegradation |
| url | http://www.sciencedirect.com/science/article/pii/S1878535222004245 |
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