Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2016, Vol. 27 ›› Issue (1): 4 doi: 10.1007/s41365-016-0004-y

• NUCLEAR CHEMISTRY,RADIOCHEMISTRY,RADIOPHARMACEUTICALS AND NUCLEAR MEDICINE • Previous Articles     Next Articles

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

Rui Ding 1, Ze-Yu Mao 1, Jian-Long Wang 2,3   

  1. 1. Department of Hydraulic Engineering, Tsinghua University, Beijing, 100084, China
    2. Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing, 100084, China
    3. Beijing Key Laboratory of Radioactive Waste Treatment, INET, Tsinghua University, Beijing, 100084, China
  • Contact: Jian-Long Wang E-mail:wangjl@tsinghua.edu.cn
Rui Ding, Ze-Yu Mao, Jian-Long Wang. Synergistic effects of 4-nitrophenol degradation using gamma irradiation combined with a advanced oxidation process.Nuclear Science and Techniques, 2016, 27(1): 4     doi: 10.1007/s41365-016-0004-y

Abstract:

The radiation-induced degradation of 4-nitrophenol (4-NP) was performed in combination with a Fenton reagent, H2O2, 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, respectively. Radiation combined with H2O2, 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 pollutants. Major intermediates during the 4-NP degradation process were identified and a possible degradation pathway was tentatively proposed .

Key words: Radiation degradation, Nitrophenol, Advanced oxidation processes, Priority pollutant, Synergistic effect