Photo-degradation mechanism of Cationic Red X-GRL in the presence and absence of oxygen(氧在阳离子红染料光脱色中的作用机理研究)
以阳离子红X-GRL染料为模型污染物,研究了反应时间、气相氧气流量和水中是否存在溶解氧(DO)等条件对阳离子红X-GRL光降解脱色效果的影响.在缺氧条件下,阳离子红X-GRL染料的光降解脱色效果较差,脱色率仅为9.1%,染料的光降解脱色以光直接降解脱色为主,·OH脱色次之.在有氧条件下,阳离子红X-GRL染料的光降解脱色效果得到显著提高,脱色率由缺氧时的9.1%分别提高到氧气流量为40 L·h-1的27.6%和100L·h-1的38.8%.脱色率的提高主要归因于DO和气相氧气在184.9 nm紫外光的辐射下产生了O3,使染料被O3氧化脱色.通过实验及分析,得出了阳离子红X-GRL染料在缺氧及有...
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| Format: | Article |
| Language: | zho |
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Zhejiang University Press
2003-07-01
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| Series: | Zhejiang Daxue xuebao. Lixue ban |
| Subjects: | |
| Online Access: | https://doi.org/zjup/1008-9497.2003.30.4.443-448 |
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| author | ZHAOWei-rong(赵伟荣) SHIHui-xiang(史惠祥) WANGDa-hui(汪大翚) |
| author_facet | ZHAOWei-rong(赵伟荣) SHIHui-xiang(史惠祥) WANGDa-hui(汪大翚) |
| author_sort | ZHAOWei-rong(赵伟荣) |
| collection | DOAJ |
| description | 以阳离子红X-GRL染料为模型污染物,研究了反应时间、气相氧气流量和水中是否存在溶解氧(DO)等条件对阳离子红X-GRL光降解脱色效果的影响.在缺氧条件下,阳离子红X-GRL染料的光降解脱色效果较差,脱色率仅为9.1%,染料的光降解脱色以光直接降解脱色为主,·OH脱色次之.在有氧条件下,阳离子红X-GRL染料的光降解脱色效果得到显著提高,脱色率由缺氧时的9.1%分别提高到氧气流量为40 L·h-1的27.6%和100L·h-1的38.8%.脱色率的提高主要归因于DO和气相氧气在184.9 nm紫外光的辐射下产生了O3,使染料被O3氧化脱色.通过实验及分析,得出了阳离子红X-GRL染料在缺氧及有氧条件下的光降解路径,同时,强调了气相氧气在184.9 nm紫外光辐射下产生的O3对提高脱色效果的作用不可忽视. |
| first_indexed | 2024-04-24T17:02:33Z |
| format | Article |
| id | doaj.art-5cf6f849f1574d8184bd42076bfb0d1b |
| institution | Directory Open Access Journal |
| issn | 1008-9497 |
| language | zho |
| last_indexed | 2024-04-24T17:02:33Z |
| publishDate | 2003-07-01 |
| publisher | Zhejiang University Press |
| record_format | Article |
| series | Zhejiang Daxue xuebao. Lixue ban |
| spelling | doaj.art-5cf6f849f1574d8184bd42076bfb0d1b2024-03-29T01:58:20ZzhoZhejiang University PressZhejiang Daxue xuebao. Lixue ban1008-94972003-07-01304443448zjup/1008-9497.2003.30.4.443-448Photo-degradation mechanism of Cationic Red X-GRL in the presence and absence of oxygen(氧在阳离子红染料光脱色中的作用机理研究)ZHAOWei-rong(赵伟荣)0SHIHui-xiang(史惠祥)1WANGDa-hui(汪大翚)2De.partment of Environmental Engineering, Zhejiang University, Hangzhou 310027, China(浙江大学环境工程系，浙江 杭州 310027)De.partment of Environmental Engineering, Zhejiang University, Hangzhou 310027, China(浙江大学环境工程系，浙江 杭州 310027)De.partment of Environmental Engineering, Zhejiang University, Hangzhou 310027, China(浙江大学环境工程系，浙江 杭州 310027)以阳离子红X-GRL染料为模型污染物,研究了反应时间、气相氧气流量和水中是否存在溶解氧(DO)等条件对阳离子红X-GRL光降解脱色效果的影响.在缺氧条件下,阳离子红X-GRL染料的光降解脱色效果较差,脱色率仅为9.1%,染料的光降解脱色以光直接降解脱色为主,·OH脱色次之.在有氧条件下,阳离子红X-GRL染料的光降解脱色效果得到显著提高,脱色率由缺氧时的9.1%分别提高到氧气流量为40 L·h-1的27.6%和100L·h-1的38.8%.脱色率的提高主要归因于DO和气相氧气在184.9 nm紫外光的辐射下产生了O3,使染料被O3氧化脱色.通过实验及分析,得出了阳离子红X-GRL染料在缺氧及有氧条件下的光降解路径,同时,强调了气相氧气在184.9 nm紫外光辐射下产生的O3对提高脱色效果的作用不可忽视.https://doi.org/zjup/1008-9497.2003.30.4.443-448阳离子红x-grl氧光降解紫外光机理 |
| spellingShingle | ZHAOWei-rong(赵伟荣) SHIHui-xiang(史惠祥) WANGDa-hui(汪大翚) Photo-degradation mechanism of Cationic Red X-GRL in the presence and absence of oxygen(氧在阳离子红染料光脱色中的作用机理研究) Zhejiang Daxue xuebao. Lixue ban 阳离子红x-grl 氧 光降解 紫外光 机理 |
| title | Photo-degradation mechanism of Cationic Red X-GRL in the presence and absence of oxygen(氧在阳离子红染料光脱色中的作用机理研究) |
| title_full | Photo-degradation mechanism of Cationic Red X-GRL in the presence and absence of oxygen(氧在阳离子红染料光脱色中的作用机理研究) |
| title_fullStr | Photo-degradation mechanism of Cationic Red X-GRL in the presence and absence of oxygen(氧在阳离子红染料光脱色中的作用机理研究) |
| title_full_unstemmed | Photo-degradation mechanism of Cationic Red X-GRL in the presence and absence of oxygen(氧在阳离子红染料光脱色中的作用机理研究) |
| title_short | Photo-degradation mechanism of Cationic Red X-GRL in the presence and absence of oxygen(氧在阳离子红染料光脱色中的作用机理研究) |
| title_sort | photo degradation mechanism of cationic red x grl in the presence and absence of oxygen 氧在阳离子红染料光脱色中的作用机理研究 |
| topic | 阳离子红x-grl 氧 光降解 紫外光 机理 |
| url | https://doi.org/zjup/1008-9497.2003.30.4.443-448 |
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