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The aqueous removal of sulfur dioxide (SO2) by oxidation of Mn2+ catalytic ozone was investigated in the experiments, so as to find the effects of Mn2+ for aqueous removal of SO2 by ozone. The concentration curve of ozone was measured by standard iodine measurement method. The operating factors included mole ratio of ozone to SO2 and the concentrations of Mn2+. When absorption solution has no Mn2+...