Effect of KMnO4 on the Migration and Transformation of Mn2+ and NH4+-N in Electrolytic Manganese Residue: Autocatalytic System of Manganese (Mn2+-Mno2-mn2+)
Chemical Engineering Science(2023)
Abstract
•KMnO4 accelerates the migration and transformation of Mn2+ and NH4+-N in EMR.•NH4+-N was trapped in EMR mainly through electrostatic and ion exchange interactions.•Mn2+ was converted primarily for the new ecologically hydrated MnO2 (NEHMO).•This study provides theoretical support for the harmless treatment of EMR.
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Key words
EMR,Mn2+,NH4+-N,Migration and transformation,Autocatalytic system
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