[Characteristics of nitrobenzene containing wastewater catalytic oxidation degradation by Fenton reagent].
Through the alteration of the concentration of catalyst and oxidant, the rulers and dynamics of nitrobenzene oxidized by Fenton reagent in different concentrations were studied. The correlativity of the reaction time and relatively remain nitrobenzene was analyzed by the unitary linear regress equation. The result of the analysis proves that the coefficient was over the critical constant. The oxidation of nitrobenzene by Fenton reagent was in conformity with first-order dynamics model and the reaction rate constant was got at the same time. The idea, using the complex of Fe as the catalyst replacing Fe2+ in the Fenton Reaction, not only got a higher reaction velocity and efficiency, but also had a distinct exclusive to the degradation of nitrobenzene. The remove velocity of nitrobenzene was improved from 17.48 mg/(L.min) to 71.22 mg/(L.min), the remove rate in 5 minutes was from 9.74% to 91.79%. The nonhomogeneous catalyst made by the artificial zeolite with Fe-complex adsorbed had the same catalyzing behavior. In addition, ultraviolet radiation can also improves the Fenton reaction to some degree. These research works could demonstrate the good application potentiality of Fenton reagent in treating wastewater.
Wei
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C
College of Chemical Engineering, South China Univ. of Tech., Guangzhou 510640, China. cechwei@scut.edu.cn
Chen
C
C
Wang
G
G
Ren
Y
Y
Wu
C
C
Wu
H
H
D002384:Catalysis; D006861:Hydrogen Peroxide / Q000494:pharmacology*; D007501:Iron / Q000494:pharmacology*; D009578:Nitrobenzenes / Q000737:chemistry*; D012722:Sewage; D018508:Water Purification
C045076:Fenton's reagent; D009578:Nitrobenzenes; D012722:Sewage; D006861:Hydrogen Peroxide; D007501:Iron; C036077:nitrobenzene