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
Corresponding author, wangjl@tsinghua.edu.cn
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Rui DING, Ze-Yu MAO, Jian-Long WANG. Synergistic effects of 4-nitrophenol degradation using gamma irradiation combined with advanced oxidation process. [J]. Nuclear Science and Techniques 27(1):4(2016)
Rui DING, Ze-Yu MAO, Jian-Long WANG. Synergistic effects of 4-nitrophenol degradation using gamma irradiation combined with advanced oxidation process. [J]. Nuclear Science and Techniques 27(1):4(2016) DOI: 10.1007/s41365-016-0004-y.
The radiation-induced degradation of 4-nitrophenol (4-NP) was performed in combination with a Fenton reagent, H,2,O,2, and TiO,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 kGy when its initial concentration was 100, 200, and 350 mg/L, respectively. Radiation combined with H,2,O,2, the Fenton method, and TiO,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.
Radiation degradationNitrophenolAdvanced oxidation processesPriority pollutantSynergistic effect
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