THE KINETIC STUDY ON Fe2+/PS SYSTEM IN REMOVING BPA IN AQUEOUS SOLUTION

In this study, the process of ferrous ion activating persulfate (PS) was assigned to degrade bisphonel A (EPA) in aqueous solution. The factors affecting the activation of PS by ferrous iron and the degradation rate of BPA have been systematically studied. It was found that the amount of the catalyst ferrous ion, the concentration of the oxidant BPA, the concentration of the substrate EPA, the initial pH value and the initial reaction temperature have important influences on the degradation of BPA in Fe2+/PS system. The best conditions for this experiment was determined as: [FeSO4](0)=0.1 g/L, [PS](0)=0.4mM, and pH(0)=5.0. Increasing the concentration of the substrate BPA led to the reduction of the removal rate of BPA. The increase in temperature utilized the progress of catalytic reaction and the degradation of BPA, and the degradation of BPA could reach 96.7% at 70 degrees C.