Removal of organics in water using hydrogen peroxide in presence of ultraviolet light |
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Authors: | M. Murugan Malaiyandi Husain Sadar Pauline Lee Ron O'Grady |
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Affiliation: | Monitoring and Criteria Division, Bureau of Chemical Hazards, Health and Welfare Canada, Ottawa, Ontario, Canada K1A OL2 |
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Abstract: | The optimum conditions for the removal of dissolved organic impurities from water using hydrogen peroxide (50%) followed by ultraviolet irradiation were investigated. The photochemically initiated hydroxyl radical (OH) oxidation reduced the total organic carbon (TOC) content of distilled water samples by about 88% and of tap water by 98%. Extraction with hexane of equal volumes of water samples before and after H2O2/u.v. treatment followed by gas chromatographic analysis of the concentrated extracts indicated that about 12% of the electron-capturing, residual organics remained after this treatment. These results support the conclusion drawn from total organic carbon analysis that this simple method yields water nearly free of organic impurities. |
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