Degradation of phenol in water by Fe(II)-citrate activated persulfate oxidation

Abstract

Abstract To enhance the degradation efficiency, complexing agent citric acid (CA) and trisodium citrate (TC) were introduced into the Fe(II)-persulfate (Fe 2 +/PS) oxidation system to degrade phenol. And the optimal operating conditions were determined. The results showed that Fe 2 +-citrate/PS system had higher degradation efficiency than the others. The optimal operating conditions to degrade phenol in water were: a PS concentration of 0.06 mol/L, a Fe 2 + concentration of 0.02 mol/L and a TC concentration of 0.01 mol/L, while reaction temperature and the initial pH values had little influence on the phenol degradation.