Synergistic effects of 4-nitrophenol degradation using gamma irradiation combined with a advanced oxidation process  

作　　者：Rui Ding Ze-Yu Mao Jian-Long Wang 

机构地区：[1]Department of Hydraulic Engineering, Tsinghua University [2]Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET,Tsinghua University [3]Beijing Key Laboratory of Radioactive Waste Treatment,INET, Tsinghua University

出　　处：《Nuclear Science and Techniques》2016年第1期50-55,共6页核技术（英文）

基　　金：supported by the Program for Changjiang Scholars and Innovative Research Team in University (No. IRT-13026);the National High Technology Research and Development Program (No. 2009AA063905);the International S&T Cooperation Program (ISTCP) of China (No. 2009DFB90600);the National Natural Science Foundation of China (No. 51338005)

摘　　要：The radiation-induced degradation of 4-nitrophenol(4-NP) was performed in combination with a Fenton reagent, H_2O_2, and Ti O_2 nanoparticles to investigate the synergetic effects of radiolytical degradation combined with other advanced oxidation processes. The experimental results indicated that the degradation efficiency of 4-NP was 87.5, 57.4, and 41.0 % at a dose of 20 k Gy when its initial concentration was 100, 200, and 350 mg/L, respectively. Radiation combined with H_2O_2, the Fenton method,and Ti O_2 remarkably increased the degradation efficiency of 4-NP, showing the synergetic effects. Radiation may enhance the biodegradability of 4-NP, suggesting that it has the potential to be used as a pretreatment method in combination with the biological method for the treatment of industrial wastewater containing toxic organic pollutants. Major intermediates during the 4-NP degradation process were identified and a possible degradation pathway was tentatively proposed.The radiation-induced degradation of 4-nitro- phenol （4-NP） was performed in combination with a Fen- ton reagent, H202, and TiO2 nanoparticles to investigate the synergetic effects of radiolytical degradation combined with other advanced oxidation processes. The experimental results indicated that the degradation efficiency of 4-NP was 87.5, 57.4, and 41.0 % at a dose of 20 kGy when its initial concentration was 100, 200, and 350 mg/L, respec- tively. Radiation combined with H202, the Fenton method, and TiO2 remarkably increased the degradation efficiency of 4-NP, showing the synergetic effects. Radiation may enhance the biodegradability of 4-NP, suggesting that it has the potential to be used as a pretreatment method in combination with the biological method for the treatment of industrial wastewater containing toxic organic pollu- tants. Major intermediates during the 4-NP degradation process were identified and a possible degradation pathway was tentatively proposed.

关 键 词：对硝基苯酚 协同效应 Γ射线照射 氧化过程 苯酚降解 TIO2纳米粒子 辐射降解 有毒有机污染 

分 类 号：X703[环境科学与工程—环境工程] TP212[自动化与计算机技术—检测技术与自动化装置]