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Article

Comparison of Manganese Dioxide and Permanganate as Amendments with Persulfate for Aqueous 1,4-Dioxane Oxidation

1
Water Science and Management Program, New Mexico State University, MSC 3Q P.O. Box 30003, Las Cruces, NM 88003, USA
2
Plant & Environmental Science Department, New Mexico State University, MSC 3Q P.O. Box 30003, Las Cruces, NM 88003, USA
3
Department of Soil, Water, Environmental Science, University of Arizona, Tucson, AZ 85721, USA
*
Author to whom correspondence should be addressed.
Water 2020, 12(11), 3061; https://doi.org/10.3390/w12113061
Received: 1 October 2020 / Revised: 25 October 2020 / Accepted: 29 October 2020 / Published: 1 November 2020
(This article belongs to the Special Issue Contaminant Transport and Fate)
Persulfate (PS) is widely used to degrade emerging organic contaminants in groundwater and soil systems, and various PS activation methods (e.g., energy or chemical inputs) have been considered to increase oxidation strength. This study investigates PS activation through manganese amendment in the form of potassium permanganate (KMnO4) and manganese dioxide (MnO2) to subsequently degrade the emerging and recalcitrant groundwater contaminant 1,4-dioxane (1,4-D). The activation of PS by MnO2 was confirmed by radical trap and by product formation. The degradation kinetics of 1,4-D by PS was also compared with varying amendments of KMnO4 and MnO2. The results showed that MnO2 activated PS, which increased the degradation rate constant of 1,4-D. KMnO4 activation of PS was not observed even though the binary oxidant mixture did enhance the degradation of 1,4-D. These results have implications for applying in situ chemical oxidation in subsurface systems, especially for conditions wherein manganese exists naturally in groundwater or aquifer minerals to support possible PS activation. View Full-Text
Keywords: persulfate; 1,4-dioxane; advanced oxidation; permanganate; manganese dioxide; ISCO; groundwater contamination; groundwater remediation persulfate; 1,4-dioxane; advanced oxidation; permanganate; manganese dioxide; ISCO; groundwater contamination; groundwater remediation
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MDPI and ACS Style

Bridges, L.; Mohamed, R.A.M.; Khan, N.A.; Brusseau, M.L.; Carroll, K.C. Comparison of Manganese Dioxide and Permanganate as Amendments with Persulfate for Aqueous 1,4-Dioxane Oxidation. Water 2020, 12, 3061. https://doi.org/10.3390/w12113061

AMA Style

Bridges L, Mohamed RAM, Khan NA, Brusseau ML, Carroll KC. Comparison of Manganese Dioxide and Permanganate as Amendments with Persulfate for Aqueous 1,4-Dioxane Oxidation. Water. 2020; 12(11):3061. https://doi.org/10.3390/w12113061

Chicago/Turabian Style

Bridges, Logan; Mohamed, Ruba A.M.; Khan, Naima A.; Brusseau, Mark L.; Carroll, Kenneth C. 2020. "Comparison of Manganese Dioxide and Permanganate as Amendments with Persulfate for Aqueous 1,4-Dioxane Oxidation" Water 12, no. 11: 3061. https://doi.org/10.3390/w12113061

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