Abstract
Nano-ferrosoferric-oxide (nFe3O4)-activated persulfate (PS) technology was used to remove pollutant bisphenol A (BPA) in water. The effects of nFe3O4 concentration, PS concentration, BPA concentration, temperature, and pH were investigated in terms of the degradation effect of BPA. The results showed that more PS dosage and lower BPA concentration could improve the degradation rate of BPA. When other conditions were constant, the degradation rate of BPA increased with the increase of temperature. When pH was 5, the degradation rate of BPA was the highest. When the initial PS concentration and pH were changed, the degradation rate of BPA was consistent with the pseudo-secondary kinetic model. Under other conditions, the degradation rate of BPA was consistent with the pseudo-first-order kinetic model. Sulfate radical (SO4•−) produced by nFe3O4/PS system was mainly responsible for the degradation of BPA.
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