Photocatalytic Degradation of Polycyclic Aromatic Hydrocarbons

摘要：

By using an ultrasonic cleaner, ten selected polycyclic aromatic hydrocarbons (PAHs) namely naphthalene (2 rings), acenaphthylene (3 rings), phenanthrene (3 rings), anthracene (3 rings), pyrene (4 rings), benazoaanthracene (4 rings), chrysene (4 rings), benzoapyrene (5 rings), dibenzoa,hanthracene (5 rings) and benzog,h,Iperylene (6 rings) could be 100％ extracted from aqueous solution within 1 h. Photocatalytic reactivity of these PAHs towards PCO was correlated to the water solubility and electron distribution over PAH molecules. Acetone, a common solvent, was found to improve photocatalytic degradation PAHs, especially for phenanthrene, pyrene, benzoaanthracene and benzoapyrene. It is believed that acetone enhanced the water solubility of PAHs so that PAHs could more readily contact with the photocatalyst to facilitate degradation. However, addition of acetone could lower photocatalytic degradation of some PAHs with comparatively low water solubility.

关键词： PAHs photocatalytic oxidation titanium dioxide acetone

作者: WOO O T CHUNG W K YIP H Y WONG P K

作者单位: Department of Biology, The Chinese University of Hong Kong, Shatin, N.T. Hong Kong SAR, China Department of Biology, The Chinese University of Hong Kong, Shatin, N.T. Hong Kong SAR, China;Enviro

会议类型: 国际会议

会议名称: 2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-11-13（万方平台首次上网日期，不代表论文的发表时间）