Ozonation, Ozone/UV and UV/H2O2 Degradation of Chlorophenols
Ozonation, Ozone/UV and UV/H2O2 Degradation of Chlorophenols
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DOI：
10.1080/01919519708547319
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发表时间：
1997
影响因子：
2.7
通讯作者：
M. Trapido;A. Hirvonen;Y. Veressinina;J. Hentunen;R. Munter
中科院分区：
文献类型：
--
作者：
M. Trapido;A. Hirvonen;Y. Veressinina;J. Hentunen;R. Munter
摘要在实验室反应器中研究了O3、O3/UV和UV/H2O2工艺对6种氯酚（4-氯酚、2-氯酚、2,4-二氯酚、2,4,6-三氯酚、2,3,4,6-四氯酚和五氯酚）的降解性能。对比研究表明，所有方法均能成功降解氯酚，而传统的高pH臭氧氧化法是处理氯酚最有效的方法。虽然已知氯酚的摩尔吸收率在紫外线区域相对较高，但紫外线辐射与臭氧的结合并没有进一步加速氯酚的降解。利用大水蚤24小时试验对氯酚臭氧化降解产物的毒性与纯氯酚的毒性进行了比较。与母本化合物相比，臭氧氧化氯酚对大水蚤产生毒性较小甚至无毒的产物。
Abstract The performance of the O3, O3/UV and UV/H2O2 processes for degradation of six chlorophenols (4-chlorophenol, 2-chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, 2,3,4,6-tetrachlorophenol and pentachlorophenol) were studied in laboratory reactors. Comparative study showed that chlorophenols can be degraded successfully by all of the methods studied, whilst traditional ozonation at high pH was determined to be the most effective method to treat chlorophenols. Even though the molar absorptivity of chlorophenols is known to be relatively high in the UV-region, the combination of UV-radiation with ozone did not accelerate the degradation of chlorophenols further. The toxicity of degradation products formed during ozonation of chlorophenols has been compared with the toxicity of pure chlorophenols utilizing Daphnia magna 24 hours test. Ozonation of chlorophenols yielded less toxic or even nontoxic products for Daphnia magna compared with parent compounds.