Phosphoric acid mixed with hydrogen peroxide
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The hydrogen peroxide-phosphoric acid mixture is composed of hydrogen peroxide, phosphoric acid and a stabilizer, a mass ratio of hydrogen peroxide to phosphoric acid is 20:1-50:1, and the stabilizer accounts for 0.1-0.5% of the weight of hydrogen peroxide.
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The treatment of wet-process phosphoric acid by chemical oxidation with H2O2 as oxidizing agent can remove 75 % of the initial TOC as maximum, indicating that this wet-process phosphoric acid contains an important amount of organics that cannot be oxidized by hydrogen peroxide under the operation conditions used.
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