硝酸根紫外光降解对硝基苯甲酸的研究  

Study on ultraviolet photodegradation of p-nitrobenzoic acid with nitrate

作　　者：徐培君[1] 刘红[1] 周志辉[1] 徐文婷[1] 

机构地区：[1]武汉科技大学冶金矿产资源高效利用与造块湖北省重点实验室,武汉430081

出　　处：《环境工程学报》2011年第1期80-84,共5页Chinese Journal of Environmental Engineering

基　　金：湖北省武汉市科技计划项目(200861113462)

摘　　要：以硝酸铝做光氧化剂,研究了紫外光照射下,NO3-对PNB(对硝基苯甲酸)的光降解作用。探索了NO3-投加量、模拟废水初始浓度和pH值、光照时间、溶解氧浓度对处理效果的影响。结果表明,NO3-对PNB具有良好的光氧化作用,在最佳处理条件下,NO3-光降解PNB 4 h后降解率达90.8%。廉价硝酸盐对于有机物能起到显著光降解作用的这一性质,对于采用直接光氧化和光催化技术处理有机废水具有重要的实际意义。The photodegradation of p-nitrobenzoic acid was studied by using aluminum nitrate as photooxidant under UV light irradiation.The effects of dosage of NO-3,initial pH value and concentration of simulated wastewater,illumination time as well as dissolved oxygen on photodegradation of PNB were investigated.The results showed that NO-3 exhibited excellent photooxidation activity for the degradation of PNB.After 4 h UV irradiation,90.8% of PNB photooxidation efficiency was achieved by NO-3 under the optimum treatment conditions.The property that cost-effective nitrate can play a significant role for the photodegradation of organic componds has actual meanings for organic wastewater treatment using photooxidation and photocatalysis technology.

关 键 词：光氧化 硝酸根 对硝基苯甲酸(PNB) 降解率 

分 类 号：X703.1[环境科学与工程—环境工程]