Reaction and Transport Processes Controlling In Situ Chemical Oxidation of DNAPLs
Final rept. Sep 2002-Jun 2006
COLORADO SCHOOL OF MINES GOLDEN
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In situ chemical oxidation involves the introduction of chemical oxidants into the subsurface to destroy organic contaminants in soil and ground water, with the goal being to reduce the mass, mobility, andor toxicity of contamination. The objective of this project was to quantify the poreinterfacial scale DNAPL reactions and porous media transport processes that govern the delivery of oxidant to a DNAPL-water interface and degradation of the DNAPL. In this project, an integrated set of tasks were carried out involving a comparative analysis focused on contrasting oxidant types permanganate and catalyzed hydrogen peroxide and oxidant application methods low to high dose concentrations and delivery densities to treat a mixture of tetrachloroethene PCE and trichloroethene TCE DNAPL present in mass levels and distributions under conditions representative of a range of subsurface environmental settings. The research also addressed the potential secondary effects of applications of ISCO, as well as the coupling of ISCO with pre- and post-ISCO treatment operations.
- Physical Chemistry
- Water Pollution and Control
- Environmental Health and Safety