金属离子和氧化剂对4-氯酚光化学降解的影响  

Effects of Metal Ions and Oxidants on the Photochemical Degradation of 4Chlorophenol

作　　者：郁志勇[1] 宋林[1] 朱燕[1] 孙震[1] 唐晓纯[1] 

机构地区：[1]中国人民大学环境学院,北京100872

出　　处：《应用科学学报》2003年第4期419-422,共4页Journal of Applied Sciences

基　　金：中国人民大学科研资助项目(1999001)

摘　　要：在实验条件下,Mn2+/Fe2+/Cu2+/Zn2+/Al3+/Y3+/La3+(特别是Y3+和La3+)、KMnO4/K2S2O8/KClO3/KClO4/KBrO3/KIO3对4氯酚光化学降解起加速作用,且随其浓度增大而增强.KIO4对4氯酚光化学降解起抑制作用,且随其浓度增大而增强.KClO3/KBrO3+Y3+对4CP光化学降解的加速作用更为显著.无光照时,KMnO4、KIO4+Mn2+/Fe2+都能够使4氯酚立刻发生化学降解,尤其以KMnO4、KIO4+Mn2+的作用更为显著.Under experimental conditions, Mn2+/Fe2+/Cu2+/Zn2+/Al3+/Y3+/La3+(especially for Y3+and La3+),KMnO4/K2S2O8/KClO3/KClO4/KBrO3/KIO3 can accelerate the photochemical degradation of 4chlorophenol(4CP), and this acceleration effect increases with the increase of concentration of metal ions and oxidants. KIO4 can inhibit the photochemical degradation of 4CP, and this inhibition effect increases with the increase of the concentration of KIO4. Cooperative effect of KClO3/KBrO3+Y3+ on the photochemical degradation of 4CP is more striking. Without illumination, KMnO4, KIO4+Mn2+/Fe2+ can cause 4CP to be oxygenated at once, the effects of KMnO4 and KIO4+Mn2+ are especially striking.

关 键 词：金属离子 氧化剂 4-氯酚 光化学降解 饮用水 

分 类 号：TU991.2[建筑科学—市政工程] TQ242[化学工程—有机化工]