利用紫外线和过氧化氢对苯酚水溶液进行光化学处理。

Photochemical treatment of phenol aqueous solutions using ultraviolet radiation and hydrogen peroxide.

作者信息

Poulopoulos S G, Arvanitakis F, Philippopoulos C J

机构信息

School of Chemical Engineering, Chemical Process Engineering Laboratory, National Technical University of Athens, Heroon Politechneiou 9, Zographou Campus, 157 80 Athens, Greece.

出版信息

J Hazard Mater. 2006 Feb 28;129(1-3):64-8. doi: 10.1016/j.jhazmat.2005.06.044. Epub 2005 Oct 10.

DOI:10.1016/j.jhazmat.2005.06.044

PMID:16216412

Abstract

The potential of purifying phenol aqueous solutions (0.0006-0.0064 M) using ultraviolet (UV) radiation and hydrogen peroxide (H2O2; 0.005-0.073 M) was investigated. Although the direct photolysis of phenol and its oxidation by hydrogen peroxide (without ultraviolet light) were insignificant, the combination of UV and H2O2 was extremely effective on phenol degradation. However, the chemical oxygen demand was on no occasion entirely eliminated, indicating the resistance of the intermediate products formed to the photo-oxidation. Increasing the initial concentration of phenol had as a result lower phenol conversions achieved, whereas the increase in hydrogen peroxide initial concentration enhanced significantly the degradation of phenol. In contrast, COD removal was less sensitive to these changes.

摘要

研究了使用紫外线（UV）辐射和过氧化氢（H₂O₂；0.005 - 0.073 M）净化苯酚水溶液（0.0006 - 0.0064 M）的潜力。尽管苯酚的直接光解及其被过氧化氢氧化（无紫外线）作用不显著，但UV和H₂O₂的组合对苯酚降解极为有效。然而，化学需氧量从未被完全消除，这表明所形成的中间产物对光氧化具有抗性。苯酚初始浓度增加的结果是苯酚转化率降低，而过氧化氢初始浓度的增加显著增强了苯酚的降解。相比之下，化学需氧量的去除对这些变化不太敏感。