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We demonstrated that diclofenac can be rapidly and completely oxidized in Fenton reaction system using pyrite as catalyst. The pH of the solution dropped from 5.7 to 4.1–3.2 with addition of different amounts of pyrite (0.5–4.0mM) as Fe(II) concentration increased to 0.07–0.52mM. Complete degradation (100%) of diclofenac was observed by pyrite Fenton system within 120s, while only 65% of diclofenac...
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