高等学校化学学报 ›› 2016, Vol. 37 ›› Issue (8): 1499.doi: 10.7503/cjcu20160156
收稿日期:
2016-03-18
出版日期:
2016-07-19
发布日期:
2016-07-19
作者简介:
联系人简介: 张超杰, 女, 博士, 副教授, 主要从事工业污水处理理论与技术及难降解有机污染物的降解技术研究. E-mail:
基金资助:
GUO Rui, ZHANG Chaojie*(), ZHANG Geng, ZHOU Qi
Received:
2016-03-18
Online:
2016-07-19
Published:
2016-07-19
Contact:
ZHANG Chaojie
E-mail:myrazh@tongji.edu.cn
Supported by:
摘要:
研究了185 nm紫外光激发氯离子生成的水合电子还原降解全氟辛酸(PFOA)的效果. 结果表明, 该体系中氯离子、 紫外光和绝氧环境是保证PFOA高效降解的必要条件; 当PFOA的浓度为0.03 mmol/L时, 最佳反应条件为氯离子与PFOA摩尔浓度比(
中图分类号:
TrendMD:
郭睿, 张超杰, 张庚, 周琪. 紫外光致氯生水合电子对全氟辛酸的降解. 高等学校化学学报, 2016, 37(8): 1499.
GUO Rui,ZHANG Chaojie,ZHANG Geng,ZHOU Qi. Degradation of Perfluorooctanoic Acid by UV/Chloride Process†. Chem. J. Chinese Universities, 2016, 37(8): 1499.
Fig.1 Equipment diagram 1. UV light; 2. quartz tube; 3. aerator pipe; 4. seal cover; 5. circulating water inlet valve; 6. circulating water outlet valve; 7. sampling place; 8. temperature probe; 9. magnetic stirring apparatus.
System | cNaCl/(mmol·L-1) | Time(He)/min | pH | UV185 |
---|---|---|---|---|
PFOA+He+NaCl+UV185 | 0.3 | 30 | 10.0 | Irradiate |
PFOA+He+UV185 | 0 | 30 | 10.0 | Irradiate |
PFOA+He+NaCl | 0.3 | 30 | 10.0 | None |
Table 1 Reaction conditions of three systems*
System | cNaCl/(mmol·L-1) | Time(He)/min | pH | UV185 |
---|---|---|---|---|
PFOA+He+NaCl+UV185 | 0.3 | 30 | 10.0 | Irradiate |
PFOA+He+UV185 | 0 | 30 | 10.0 | Irradiate |
PFOA+He+NaCl | 0.3 | 30 | 10.0 | None |
System | Reaction kinetic | 103kobs/min-1 | Half-life/h | Reference |
---|---|---|---|---|
PFOA+NaCl+He+UV185 | First-order | 6.3 | 1.77 | This study |
PFOA+KI+N2+UV254 | First-order | 7.0 | 1.58 | [ |
PFOA+K2S2O8+O2+UV185 | First-order | 1.4 | 8.19 | [ |
PFOA+N2+UV185 | First-order | 1.9 | [ |
Table 2 Degradations of PFOA in different reaction systems
System | Reaction kinetic | 103kobs/min-1 | Half-life/h | Reference |
---|---|---|---|---|
PFOA+NaCl+He+UV185 | First-order | 6.3 | 1.77 | This study |
PFOA+KI+N2+UV254 | First-order | 7.0 | 1.58 | [ |
PFOA+K2S2O8+O2+UV185 | First-order | 1.4 | 8.19 | [ |
PFOA+N2+UV185 | First-order | 1.9 | [ |
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