Removal of Selected Endocrine Disrupting Chemicals and Personal Care Products in Surface Waters and Secondary Wastewater by Ozonation
| Autor: | Cheikh Fall, Mark Van Loosdrecht, Christine Maria Hooijmans, Nicolas Flores-Alamo, Noorsaadah Abd. Rahman |
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| Rok vydání: | 2011 |
| Předmět: |
Ozone
Radical Phthalic Acids DEET Parabens Endocrine Disruptors Waste Disposal Fluid Water Purification chemistry.chemical_compound Reaction rate constant Environmental Chemistry Waste Management and Disposal Water Science and Technology Chemistry Ecological Modeling Malaysia Household Products Pollution Kinetics Wastewater Insect Repellents Environmental chemistry Hydroxyl radical Water treatment Sewage treatment Oxidation-Reduction Water Pollutants Chemical Nuclear chemistry |
| Zdroj: | Water Environment Research. 83:684-691 |
| ISSN: | 1061-4303 |
| DOI: | 10.2175/106143011x12989211841179 |
| Popis: | This study investigated the removal of parabens, N,N-diethyl-m-toluamide (DEET), and phthalates by ozonation. The second-order rate constants for the reaction between selected compounds with ozone at pH 7 were of (2.2 +/-0.2) X 10(6) to (2.9 +/-0.3) X 10(6) M 1/s for parabens, (2.1+/- 0.3) to (3.9 +/-0.5) M-1/s for phthalates, and (5.2 +/-0.3) M-1/s for DEET. The rate constants for the reaction between selected compounds with hydroxyl radical ranged from (2.49 +/-0.06) x 10(9) to (8.5 +/-0.2) x 10(9) M-1/s. Ozonation of selected compounds in secondary wastewater and surface waters revealed that ozone dose of 1 and 3 mg/L yielded greater than 99% depletion of parabens and greater than 92% DEET and phthalates, respectively. In addition, parabens were found to transform almost exclusively through the reaction with ozone, while DEET and phthalates were transformed almost entirely by hydroxyl radicals (.OH). |
| Databáze: | OpenAIRE |
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