Effect of Inorganic Ions on the Degradation of Aniline-containing Water with Fenton’s Reagent

Li Mingyu¹, Tian Yilin^1,2, Jin Lahua¹, Tang Qihong¹,  Fang Jianzhang³
(¹ Department of Environmental Engineering, Jinan University, Guangzhou 510632)
(² College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475001)
(³ Institute of Environmental Science, Huanan Normal University, Guangzhou 510631)

Abstract In this paper, the effect of some inorganic ions on the degradation of aniline with Fenton’s reagent was studied. Experimental results showed that ferric ions can enhance the catalytic oxidization ability of Fenton’s reagent. Phosphate, chloride ions, copper ions and bicarbonate ions will suppress the catalytic oxidization ability, and the inhibition ability was: H₂PO₄^-> Cl^-> Cu^2+> HCO₃^-. For the ions of sulfate radical, nitrate radical and ammonium, the effect of these ions on the Fenton’s system catalytic ability was not found. On the other hand, the mechanism of inhibition action of these inorganic ions was discussed.
Key words Inorganic ions, Fenton’s reagent, Aniline, Degradation, Wastewater treatment