like (CaO 2/Fe (III)) systems on their benzene degradation performance. The H 2 O 2, Fe (II),
Fe (III), and HO radical dot variations were investigated during the benzene degradation.
Although benzene has been totally removed in the two systems, the variation patterns of the
investigated parameters were different, leading to different benzene degradation patterns. In
terms of the Fe (II)/Fe (III) conversion, the CaO 2/Fe (II) and CaO 2/Fe (III) systems were …