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I <br />S E C O R <br />Hydrogen Peroxide Bench Scale Study <br />The hydrogen peroxide reagent bench -scale study will evaluate the efficiency of hydrogen <br />peroxide and measure the soil oxidant demand. Soil and groundwater samples will be <br />mixed with a treatment of 3, 5, and 10 % hydrogen peroxide solution. The reaction will be <br />allowed to proceed for two days or until complete. Samples will be segregated into soil and <br />water and submitted for analysis. <br />Soil Oxidant Demand Testing <br />The soil oxidant demand (SOxD) analysis using potassium permanganate provides an <br />estimate of the soil oxidant demand for potassium permanganate. The SOxD is measured <br />using a representative sample, a standard potassium permanganate solution, and an Ultra <br />Violet Visible detector (US -vis) or spectrophotometer to measure the permanganate <br />concentration in the treatment water over time. Triplicate blank or control samples are <br />prepared by adding 5 milliliters (ml) of KMn04, standard solution, and distilled water to each <br />amber VOA bottle. The triplicate soil samples are prepared by adding 1 gram (g) of soil to <br />each amber VOA bottle, 5 ml of KMn04, and 5 ml of distilled water. The samples should <br />stand for 15 minutes before reading the UV -vis spectrophotometer. Mixing of the sample <br />and solution should be done by hand or using a sample roller. <br />The permanganate solution in samples should be analyzed immediately after the addition, <br />again within several hours, and additionally after 1,2,4,6, and 10 days. After approximately <br />ten days the consumption rates have stabilized and the total soil oxidant demand can be <br />estimated. Samples should be kept in the dark and shaken/vortexed after each analysis. <br />