Photocatalytic Degradation of Bisphenol AF in TiO_2 Suspension

摘要

The photodegradation behavior of bisphenol AF (BPAF) in TiO_2 suspension was investigated. The influence of dissolved oxygen, TiO_2 dosage, fluoride, and initial BPAI concentration on the degradation of BPAF was studied and described in details. The main purpose were to clarify the degradation kinetics of BPAF and quantify the fluoride concentration during the degradation. At an initial concentration of 40 mol/L, more than 97% of TOC was removed efficiency was achieved within 540 min irradiation, and the concentration of fluoride was 0.9S mg/L. Degradation of BPAF followed the Langmuir-Hinshelwood kinetics rate model and the reaction rate constant kre was 1.21 uM/min. The results obtained indicated that TiO_2 photocatalytic degradation is a highly effective way to remove BPAF without any generation of more toxie products or fluoride pollution.