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Kinetics of Manganese and Iron Oxidation by Potassium Permanganate and Chlorine Dioxide
Author(s) -
Knocke William R.,
Van Benschoten John E.,
Kearney Maureen J.,
Soborski Andrew W.,
Reckhow David A.
Publication year - 1991
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1991.tb07167.x
Subject(s) - potassium permanganate , manganese , permanganate , chemistry , inorganic chemistry , kinetics , chlorine , chlorine dioxide , metal , redox , potassium , environmental chemistry , organic chemistry , physics , quantum mechanics
This article describes research to quantify the kinetics of Mn(II) and Fe(II) oxidation by potassium permanganate and chlorine dioxide; illustrates the effects of reduced metal ion concentration, pH, temperature, and the presence of dissolved organic carbon (DOC) on these kinetics; and investigates aspects of oxidation through modeling analyses. Among conclusions based on experimental results were the following: oxidation of reduced Mn(II) was rapid except at low solution temperatures; rates of Mn(II) oxidation are acceptable in the presence of humic or fulvic acids, but those acids strongly inhibit Fe(II) oxidation efficiency; poor manganese removal may be caused by inefficient capture of colloidal MnO X (s). The sequence in which oxidants are added may be an important issue for design and operation.