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_ _ <br /> N. <br /> M <br /> TABLE 3 <br /> SUMMARY OF ADVANTAGES AND LIMITATIONS <br /> f OF TWO COMMON OXIDIZERS <br /> HYDROGEN POTASSIUM PERMANGANATE <br /> PEROXIDE (KMnO4) <br /> (H2O2) (with acid <br /> or iron catalyst as <br /> Fenton' s <br /> Chemis <br /> FACTOR DESCRIPTION DESCRIPTION <br /> Reactivity Very fast, strong Fast, strong reaction <br /> reaction <br /> Reactant half-life Seconds — minutes Minutes — hours <br /> Availability Widely Available Generally available <br /> Phase Clear liquid Gray powder, mixed with water to about 5-6% <br /> turns to bright purple. Over 8% concentration <br /> begins to precipitate. <br /> Target Chemicals Works well with: Works well with: Chlorinated alkenes, phenols, <br /> (Leethem et al., Chlorinated alkenes; sulfide/organosulfur compounds, olefins <br /> 2002) Polyaromatic (Alkenes) <br /> hydrocarbons <br /> (PAHs); Methyl <br /> tertiary butyl ether <br /> (MTBE); Benzene, - <br /> Toluene, <br /> Ethylbenzene, and <br /> Total Xylenes <br /> (BTEX); Olefins <br /> Alkenes <br /> Does not work Does not work well Does not work well on: gasoline, diesel, <br /> well on: (Leethem on Chlorinated MTBE, BTEX, alkanes, methylene chloride, <br /> et al., 2002) alkanes, some carbon tetrachloride <br /> alkanes <br /> Safety and Special handling Special handling and safety precautions: PPE <br /> Handling and safety for skin, eyes, mucous membranes, lungs. <br /> precautions: Purple staining and burns if handled poorly. <br /> personal protective <br /> equipment (PPE) <br /> for skin, eyes, <br /> mucous membranes, <br /> lungs. Serious <br /> white bums if <br /> handled poorly. <br /> H requirements Low pH (2-4) Reactive under neutral pH 7); more flexibility <br /> 8 <br />