Removal of phosphorus in municipal landfill leachate by photochemical oxidation combined with ferrate pre-treatment

Removal of phosphorus in municipal landfill leachate by photochemical oxidation processes combined with ferrate pre-treatment was investigated in this study. Removal effect of phosphorus in the five systems, Fe(VI)/UV, Fe(VI)/TiO(2)/UV, Fe(III)/UV, TiO(2)/UV and UV, were evaluated. The results show that ferrate pre-treatment removes 78% of total phosphorus by using 0.16 mM ferrate dealing with 500 mL municipal landfill leachate at pH 5. Among the five systems, Fe(VI)/TiO(2)/UV is the most efficient process for total phosphorus removal (almost 100%).