水溶液中对叔辛基酚的紫外光降解研究

研究了185nm紫外光对薄液层中对叔辛基酚(4-OP)的作用规律,考察了初始浓度、液层厚度、光强等因素对4-OP的降解效果的影响.结果表明,用该方法降解水中4-OP,在4-OP初始浓度10mg/L,液层厚度为2mm,光照距离为10cm,光照45min后,去除率可达到95%以上,其降解过程符合表观一级反应动力学特征.

UV photodegradation of p-tert-octyl phenol(4-OP)in water

The degradation of p-tert-octyl phenol (4-OP) in a thin aqueous layer by 185 nm UV irradiation and its dependence on the initial concentration, thickness of the aqueous layer and light intensity were investigated. The 185 nm UV irradiation was proved to be effective for the removal of 4-OP in water. The rate of degradation was increased to more than 95% after the illumination for 45min when the initial concentration was 10mg/L, the thickness of the aqueous layer was 2mm and the distance from UV lamp was 10cm. The degradation reaction was found to accord with the characteristic of apparent first-order reaction.