Permanganate treatment of DNAPLs in reactive barriers and source zone flooding schemes. 1997 annual progress report Page: 1 of 6
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Progress Report: Permanganate Treatment of DNAPLs in Reactive Barriers and
Source Zone Flooding Schemes
Contract Number: DE-FG07-96ER14735
Contractor: Dr. Frank W. Schwartz
Department of Geological Sciences
The Ohio State University
125 S. Oval Mall
Columbus, OH 43210 (614) 292-6196
Introduction
The goals of this study are (1) to elucidate the basic mechanisms by which
potassium permanganate oxidizes common chlorinated solvents, various
constituents in aqueous solution, and porous-medium solids, and (2) to assess the
potential for chemical oxidation by potassium permanganate to serve as a remedial
scheme involving either source zone flooding or reactive barriers. The research plan
involves a combined experimental/modeling study that builds on our extensive
previous work in the area of reactive barrier systems, and modeling of reactive
contaminant transport. The experimental studies are being undertaken at The Ohio
State University by Dr. Schwartz and his co-workers. The modeling work is being
conducted in Albuquerque, NM by Dr. Zhang of Intera, Inc.
The workplan for this study is designed around the following four objectives
(1) to describe through batch experiments the kinetics and mechanisms by which
potassium permanganate oxidizes dissolved tetrachloroethene (PCE),
trichloroethene (TCE), and dichloroethene (DCE), (2) to examine using column
studies the nature and kinetics of reactions between potassium permanganate,
residual DNAPLs (PCE, TCE, and DCE) and porous medium solids, (3) to represent
the process understanding in flow and transport models that demonstrate the
potential applicability of the approach, and (4) to apply the resulting computer code
in the development of appropriate field tests for assessing the approach.
Overview of Activities
To date work there has been significant progress in addressing objectives 1
and 3. Batch studies have been completed to examine the rates of oxidation of PCE,
TCE, DCE and several alcohols. A complimentary series of experiments have been
completed to provide a preliminary evaluation of the reaction pathways by which
chlorinated aliphatic compounds are oxidized. A chapter summarizing the results of
these studies (Yan and Schwartz, 1997) has been recently submitted to Journal of
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Schwartz, F.W. Permanganate treatment of DNAPLs in reactive barriers and source zone flooding schemes. 1997 annual progress report, report, January 1, 1997; United States. (https://digital.library.unt.edu/ark:/67531/metadc624939/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.