Study on Degradation of Bisphenol A by Catalyst Activation Persulfate
With the industrial development,human production and life have led to serious water pollution.BPA is a pollutant requiring great disposal efforts.However,the advanced oxidation technology is of good treatment application value.In this paper,Fe nanoparticle catalyst(Fe-NC-G-700)coated with N-doped graphite carbon was prepared to activate persulfate(PDS)to degradeBPA.Firstly,the calcination temperature of catalysts was optimized.Then,catalyst dosage,PDS dosage,reaction tem-perature and initial pH value were optimized through the single factor control method.The optimum reaction conditions were as follows:Fe-NC-G-700=200 mg/L,PDS=0.378 mM,reaction temperature=30℃,initial pH=6.5.The effect of co-existing inorganic anions(HCO3-,Cl-,H2PO4-and NO3-)on the degradation of BPA was also investigated.The results indicatedthat the Fe-NC-G-700/PDS system had excellent resistance to inorganic anions.In addition,control experiments showed that the prepared Fe-NC-G-700 had good PDS activation ability.Meanwhile,the quenching experiment results displayed that the main reactive oxygen species(ROS)in the Fe-NC-G-700/PDS system were superoxide radicals and singlet oxygen.
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