To study the efficient method for removal of the trace organic pollutants in water by peroxymonosulfate (PMS) based advanced oxidation processes

CuFe2O4nanoparticles were prepared by sol-gel method and used as heterogeneous catalyst in the CuFe2O4/PMS system for the degradation of norfloxacin(NFX). The CuFe2O4 nanoparticles were characterized by X-ray diffraction (XRD)

Transmission Electron Microscopy (TEM) and Brunner-Emmet-Teller (BET). Several significant factors affecting the catalytic properties in the CuFe2O4/PMS system such as calcination temperature

CuFe2O4 dosage

PMS concentration and initial pH were investigated

and the reusability and stability of CuFe2O4nanoparticles were tested as well. Besides

the degradation mechanism of NFX in the CuFe2O4/PMS heterogeneous system was studied. The results showed that the best calcination temperature was 400 ℃

and in that temperature

better crystalline

larger surface area

higher catalytic activity could be obtained. The optimum of reaction conditions for the removal of NFX in CuFe2O4/PMS system was 0.1 g/L CuFe2O4

0.5 mmol/L PMS and initial pH 9.5

under such conditions

NFX removal rate can reach 99% in 30 mins. CuFe2O4 could effectively activate PMS to generate·OH and SO4-·

and SO4-·was the main active species.