%0 Journal Article
%T Oxidation of Chlorophenols by MnO 2 Supported on Kaolinite
%J -
%D 2017
%X Chlorophenols (CPs) are of significant concern because of their wide use, toxicity and persistence in environments. In the present study, £¿-MnO 2 supported on kaolinite was used as an oxidant to oxidize three kinds of CPs, 4-chlorophenol (CP), 2, 4-dichlorophenol(DCP) and 2, 4, 6-trichlorophenol(TCP). XRD pattern showed that the synthetic MnO 2 has a poor crystallinity, and SEM results revealed that MnO 2 was evenly coated on kaolinite with a loading amount of 8.64mg/g. All three CPs were efficiently degraded by supported MnO 2 with a removal order of 2, 4, 6-TCP>2, 4-DCP>4-CP. The degradation of CPs obviously accompanied with the release of Mn 2+. Results also showed the increased oxidant¡¯s dosage promotes the removal of CPs. The reaction of CPs with MnO 2 is strictly pH-dependent, the removal of CPs decreased with pH increasing.
%K Supported MnO2
%K CPs
%K Removal
%K Reaction
%U http://www.sciencepublishinggroup.com/journal/paperinfo?journalid=266&doi=10.11648/j.ijepp.20170503.11