Accession Number:

ADA610616

Title:

Semi-Passive Oxidation-Based Approaches for Control of Large, Dilute Groundwater Plumes of Chlorinated Ethylenes

Descriptive Note:

Final rept.

Corporate Author:

OHIO STATE UNIV COLUMBUS

Report Date:

2014-04-01

Pagination or Media Count:

94.0

Abstract:

Chlorinated solvents can pose a considerable risk to human health and their presence in groundwater at many DoD sites is a significant problem due to the persistence of these chemicals in the environment. Moreover, plumes of dissolved chlorinated solvents in groundwater may not be efficiently treated in a cost effective manner due to their size, location and in some cases low contaminant concentration. Many studies have studied the possibilities of breaking down chlorinated solvents by chemical oxidation using KMnO4. Yet, the full potential of such oxidation-based approaches has not been realized, especially for those hard to treat plumes just mentioned. This project seeks cost effective ways to utilize in-situ oxidation approach to remediate relatively dilute plumes of chlorinated solvents e.g., DCE, PCE, TCE and contaminants in deeper or lower permeability zones relative to more conventional techniques and approaches. In order to reach this goal a number of key research questions were addressed 1. Can hypersaline KMnO4 fluids effectively invade a heterogeneous medium because of density effects and remain sequestered hydrodynamically 2. Is it possible to take advantage of time-delayed gelling property of KMnO4 doped engineered solutions to develop solids in-situ capable of slow KMnO4 release 3. How can we predict the fate of these engineered solutions in groundwater 4. Are there alternative cost effective materials suitable for use as slow-release solids in reactive barriers

Subject Categories:

  • Inorganic Chemistry
  • Hydrology, Limnology and Potamology
  • Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE