Abstract
With the development of industry and agriculture, water contamination comes more and more serious even threatens human health. Advanced oxidation processes are widely used in waste water treatment because of their high efficiency, among them peroxymonosulfate (PMS) activate by catalysts to release sulfate radicals and hydroxyl radicals is the best way of removing recalcitrant organic pollutants in water. Cobalt ion and cobalt oxides can activate PMS efficiently, however their high toxicity will contaminate the environment terribly and even cause human cancer, which restrains the extensive utilization. Compared with cobalt, manganese is more environment-friendly with low toxicity and abundant content, meanwhile manganese oxides are given excessive focus due to its high catalytic efficiency, which makes it can be used in practical situations.
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