Determination of the Reaction Rate Constants and Decomposition Mechanisms of Ozone with Two Model Emerging Contaminants: DEET and Nortriptyline
| Autor: | Elena Rodriguez, Juan L. Acero, Gloria Roldan, Antonio Molina-Díaz, Juan F. García-Reyes, Francisco J. Real, F. Javier Benitez |
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| Rok vydání: | 2013 |
| Předmět: |
Ozone
General Chemical Engineering Inorganic chemistry General Chemistry Mass spectrometry Decomposition Industrial and Manufacturing Engineering DEET Reaction rate chemistry.chemical_compound Reaction rate constant chemistry Nortriptyline Hydrochloride medicine Organic chemistry Nortriptyline medicine.drug |
| Zdroj: | Industrial & Engineering Chemistry Research. 52:17064-17073 |
| ISSN: | 1520-5045 0888-5885 |
| Popis: | Two representative substances of the so-called emerging compounds group (ECs), N,N-diethyl-m-toluamide (DEET) and nortriptyline hydrochloride, were selected to be subjected to ozonation processes, which constitute promising technologies for the removal of hazardous pollutants. The kinetic study provided ozonation rate constants, with an average value of 0.123 ± 0.003 L·mol–1·s–1 for DEET, which remained almost unaffected with the pH; while values varying from 2.40 × 103 to 472 × 103 L·mol–1·s–1 for nortriptyline were deduced in the pH range 2–11. Because of the ionic nature of nortriptyline, the specific rate constants of the protonated and neutral species were determined, the values obtained being 2.1 × 103 and 4.3 × 105 L·mol–1·s–1, respectively. By means of liquid chromatography time-of-flight mass spectrometry analysis, the main byproducts formed in the ozonation reactions were identified (14 for DEET and 27 for nortriptyline), and the evolution of their concentrations with reaction time were establis... |
| Databáze: | OpenAIRE |
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