Application of a persistent dissolved-phase reactive treatment zone for mitigation of mass discharge from sources located in lower-permeability sediments

J. C. Marble, Mark L Brusseau, K. C. Carroll, M. Plaschke, L. Fuhrig, F. Brinker

Research output: Contribution to journalArticle

Abstract

The purpose of this study is to examine the development and effectiveness of a persistent dissolved-phase treatment zone, created by injecting potassium permanganate solution, for mitigating discharge of contaminant from a source zone located in a relatively deep, low-permeability formation. A localized 1,1-dichloroethene (DCE) source zone comprising dissolved- and sorbed-phase mass is present in lower-permeability strata adjacent to sand/gravel units in a section of the Tucson International Airport Area (TIAA) Superfund Site. The results of bench-scale studies conducted using core material collected from boreholes drilled at the site indicated that natural oxidant demand was low, which would promote permanganate persistence. The reactive zone was created by injecting a permanganate solution into multiple wells screened across the interface between the lower-permeability and higher-permeability units. The site has been monitored for 9 years to characterize the spatial distribution of DCE and permanganate. Permanganate continues to persist at the site, and a substantial and sustained decrease in DCE concentrations in groundwater has occurred after the permanganate injection. These results demonstrate successful creation of a long-term, dissolved-phase reactive treatment zone that reduced mass discharge from the source. This project illustrates the application of in situ chemical oxidation as a persistent dissolved-phase reactive treatment system for lower-permeability source zones, which appears to effectively mitigate persistent mass discharge into groundwater.

Original languageEnglish (US)
Article number2198
JournalWater, Air, and Soil Pollution
Volume225
Issue number11
DOIs
StatePublished - 2014

Fingerprint

Groundwater
Sediments
mitigation
permeability
Gravel
Boreholes
Oxidants
Airports
Discharge (fluid mechanics)
sediment
Spatial distribution
Potassium
Sand
Impurities
Oxidation
Potassium Permanganate
groundwater
Superfund
airport
oxidant

Keywords

  • ISCO
  • Mass flux
  • Oxidation
  • Permanganate
  • Remediation
  • Source containment
  • Source zone

ASJC Scopus subject areas

  • Pollution
  • Environmental Chemistry
  • Environmental Engineering
  • Ecological Modeling
  • Water Science and Technology

Cite this

Application of a persistent dissolved-phase reactive treatment zone for mitigation of mass discharge from sources located in lower-permeability sediments. / Marble, J. C.; Brusseau, Mark L; Carroll, K. C.; Plaschke, M.; Fuhrig, L.; Brinker, F.

In: Water, Air, and Soil Pollution, Vol. 225, No. 11, 2198, 2014.

Research output: Contribution to journalArticle

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