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POTASSIUM/SODIUM PERMANGANATE FOR THE IN-SITU OXIDATION OF CHLORINATED HYDROCARBONS a: EFFECT OF REACTANT CONCENTRATION

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According to the United States Environmental Protection Agency (USEPA), 80%c of hazardous waste sites in the United States have contaminated groundwater. The most common contaminants are chlorinated organic solvents including trichloroethylene (TCE) and tetrachloroethylene (PCE). Because conventional pump and treat methods have limited success in remediating sites where dense non-aqueous phase liquids (DNAPLs) are present, in-situ oxidation using potassium or sodium permanganate is emerging as one of the most effective technologies for DNAPL treatment.

The merits of any type of treatment technology can be assessed in terms of effectiveness, ease of use, reaction rate, and cost. The use of permanganate (MnO4) for in-situ chemical oxidation results in the complete mineralization of TCE and PCE. It is easily handled, mixed and injected as well as inexpensive to design and implement as compared to other technologies.

This paper will describe recent laboratory evaluations using permanganate for the removal of TCE and PCE. A parametric model that relates all of the factors that can effect the oxidation rate; such as, pH, DIC, TOC, demand, temperature and the like, will describe the permanganate oxidation of TCE and PCE. This paper investigated the beginning of the response model based upon contaminant concentration and permanganate concentration.
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Document Type: Research Article

Publication date: 2000-01-01

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