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Kinetics of Manganese and Iron Oxidation by Potassium Permanganate and Chlorine Dioxide

Knocke, William R. / Van Benschoten, John E. / Kearney, Maureen J. / Soborski, Andrew W. / Reckhow, David A.

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.

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Kinetics of Manganese and Iron Oxidation by Potassium Permanganate and Chlorine Dioxide

Knocke, William R. / Van Benschoten, John E. / Kearney, Maureen J. / Soborski, Andrew W. / Reckhow, David A.

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.

Kinetics of Manganese and Iron Oxidation by Potassium Permanganate and Chlorine Dioxide

Knocke, William R. / Van Benschoten, John E. / Kearney, Maureen J. / Soborski, Andrew W. / Reckhow, David A.

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.

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Title:

Kinetics of Manganese and Iron Oxidation by Potassium Permanganate and Chlorine Dioxide

Contributors:

Knocke, William R. (author) / Van Benschoten, John E. (author) / Kearney, Maureen J. (author) / Soborski, Andrew W. (author) / Reckhow, David A. (author)

Published in:

Journal ‐ American Water Works Association ; 83 ; 80-87

Publication date:

1991-06-01

Size:

9 pages

ISSN:

1551-8833 , 0003-150X

DOI:

https://doi.org/10.1002/j.1551-8833.1991.tb07167.x

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Manganese Removal , Iron , Oxidation , Humic Substances , Temperature , Kinetics , Research , Chlorine Dioxide , Potassium Permanganate , pH , Organic Carbon , Modeling

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