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d <br /> optimal; requires with pH and alkalinity than hydrogen peroxide, <br /> j acidic environments pH control and catalysts not needed. <br /> with low alkalinity <br /> <200 m <br /> Cost inexpensive <br /> Reaction by- Non-toxic by- Non-toxic by-products (CO2, H2O) <br /> products products (CO2, <br /> H2O <br /> Type of oxidizer Non-selective Non-selective oxidizer <br /> oxidizer <br /> Residuals: CO2, water, iron Mn, K, MnO2, M11O4 <br /> salts, 02, chlorides, <br /> if chlorinated M1102is an insoluble precipitate that also <br /> compounds present. fors in soil naturally. <br /> Injection Spacing Close injection port Injection spacing can be further apart due to <br /> spacing reflects longer reaction time than hydrogen peroxide. <br /> short reaction <br /> period (minutes to <br /> hours). <br /> Phase II: Aerobic Kills microbes, Less toxic to microbes than hydrogen peroxide. <br /> bioremediation reestablished within <br /> weeks. <br /> Regulatory Low regulatory Higher regulatory resistance due to Mn. <br /> Resistance resistance, as <br /> 1 components are H <br /> and O. <br /> Comments on H2O2: The amount KMnO4: The amount of Cr(VI) mobilized <br /> oxidizing Cr(III) of Cr(VI) mobilized depends on the amount present. Cr(VI) will <br /> to Cr(VI) depends on the reattenuate within a short time and distance <br /> amount present. (Suthersan, 2002). <br /> Cr(VI) will <br /> reattenuate within a <br /> short time and <br /> distance (Suthersan, <br /> 2002). <br /> 9 <br />