用高级氧化技术去除植物油中的多环芳烃

应用植物油淋洗可去除土壤中高浓度多环芳烃,为进一步去除多环芳烃,采用高级氧化(臭氧氧化、过氧化氢和紫外线联合氧化)对两种含多环芳烃植物油进行处理,并考察了运行参数对多环芳烃去除效果的影响.结果表明臭氧具有氧化植物油中多环芳烃的能力,对蒽和荧蒽的氧化能力强于菲.用紫外线、10%过氧化氢,在pH=3的条件下处理MO植物油,总多环芳烃的去除率最高,为81%;按此条件对含高浓度多环芳烃EO植物油处理8 h,总多环芳烃去除率为76.5%,达到良好效果.

Removing of Polycyclic Aromatic Hydrocarbon from Plant Oil by Advanced Oxidation Process

Plant oil has the ability to remove high-concentration polycyclic aromatic hydrocarbon(PAH) from contaminated soil through leaching.To realize the further environmental removal of the PAH,two kinds of plant oil containing PAH were treated with the advanced oxidation process,i.e.,the combination oxidation by ozone,hydrogen peroxide and ultraviolet radiation.The effects of some operational parameters on PAH removal were investigated,and the results showed that ozone has the ability to oxidize PAH in plant oil,and its oxidizability to anthracene/fluoranthene is higher than to phenanthrene.A highest PAH removal rate up to 81% is obtained in plant oil when treated with 10%-concentration hydrogen peroxide in combination with UV used at pH=3,and,under the same conditions,the PAH removal rate is 76.5%,that is fairly good for treating the plant oil with highconcentration PAH for 8 hr.