ZnFe2O4 nanoparticles （ZFNPs） were developed as catalyst for the degradation of benzotriazole （BTA） by heterogeneous photoelectro- Fenton （PE-Fenton） like process. ZFNPs were prepared by a co-precipitation proce...ZnFe2O4 nanoparticles （ZFNPs） were developed as catalyst for the degradation of benzotriazole （BTA） by heterogeneous photoelectro- Fenton （PE-Fenton） like process. ZFNPs were prepared by a co-precipitation process and then characterized with transmission electron microscopy （TEM）, X-ray fluorescence （XRF）, X-ray diffraction （XRD） and BET surface area. Using such ZFNPs as catalyst, the degradation of BTA was investigated. Due to the high catalytic activity of ZFNPs, PE-Fenton like process showed efficient degradation of BTA. The influencing factors such as pH, dosage of ZFNPs, applied potential and initial concentration of BTA were systematically investigated. Under the optimum conditions, 91.2% of BTA was removed after 180 rain treatment.展开更多
采用铁碳微电解/H_2O_2耦合类Fenton法预处理高浓度焦化废水,通过正交和单因素实验研究了废水初始pH、不同质量的微电解填料、H_2O_2投加量及反应时间对COD处理效果的影响,同时研究了COD降解动力学。结果表明:最佳控制条件是废水初始pH...采用铁碳微电解/H_2O_2耦合类Fenton法预处理高浓度焦化废水,通过正交和单因素实验研究了废水初始pH、不同质量的微电解填料、H_2O_2投加量及反应时间对COD处理效果的影响,同时研究了COD降解动力学。结果表明:最佳控制条件是废水初始pH为3、铁碳填料投加量为300 g/L、H_2O_2投加量为80 m L/L、反应时间为160 min,此时COD的去除率达到87%以上;H_2O_2的加入可使铁碳微电解/H_2O_2系统COD的去除率提高37.34%,铁碳微电解/H_2O_2系统COD反应动力学方程为y=0.5296x-0.6218,相关系数R^2为0.9917。展开更多
基金supported by the National Natural Science Foundation of China (No. 20977037)the Fundamental Research Funds for the Central Universities (No.2011TS062)
文摘ZnFe2O4 nanoparticles （ZFNPs） were developed as catalyst for the degradation of benzotriazole （BTA） by heterogeneous photoelectro- Fenton （PE-Fenton） like process. ZFNPs were prepared by a co-precipitation process and then characterized with transmission electron microscopy （TEM）, X-ray fluorescence （XRF）, X-ray diffraction （XRD） and BET surface area. Using such ZFNPs as catalyst, the degradation of BTA was investigated. Due to the high catalytic activity of ZFNPs, PE-Fenton like process showed efficient degradation of BTA. The influencing factors such as pH, dosage of ZFNPs, applied potential and initial concentration of BTA were systematically investigated. Under the optimum conditions, 91.2% of BTA was removed after 180 rain treatment.
文摘采用铁碳微电解/H_2O_2耦合类Fenton法预处理高浓度焦化废水,通过正交和单因素实验研究了废水初始pH、不同质量的微电解填料、H_2O_2投加量及反应时间对COD处理效果的影响,同时研究了COD降解动力学。结果表明:最佳控制条件是废水初始pH为3、铁碳填料投加量为300 g/L、H_2O_2投加量为80 m L/L、反应时间为160 min,此时COD的去除率达到87%以上;H_2O_2的加入可使铁碳微电解/H_2O_2系统COD的去除率提高37.34%,铁碳微电解/H_2O_2系统COD反应动力学方程为y=0.5296x-0.6218,相关系数R^2为0.9917。
