Nonylphenols degradation in the UV, UV/H₂O₂, O₃and UV/O₃processes - comparison of the methods and kinetic study
Felis, E; Miksch, K
| HERO ID | 4248636 |
|---|---|
| In Press | No |
| Year | 2015 |
| Title | Nonylphenols degradation in the UV, UV/H₂O₂, O₃and UV/O₃processes - comparison of the methods and kinetic study |
| Authors | Felis, E; Miksch, K |
| Journal | Water Science and Technology |
| Volume | 71 |
| Issue | 3 |
| Page Numbers | 446-453 |
| Abstract | This paper describes the results of experiments on the decomposition of selected nonylphenols (NPs) in aqueous solutions using the UV, UV/H₂O₂, O₃and UV/O₃processes. The goal of the research was to determine the kinetic parameters of the above-mentioned processes, and to estimate their effectiveness. These substances were selected because of their ubiquitous occurrence in the aquatic environment, resistance to biodegradation and environmental significance. As a result of the experiments, the quantum yields of the 4-n-nonylphenol (4NP) and NP (technical mixture) photodegradation in aqueous solution were calculated to be 0.15 and 0.17, respectively. The values of the second-order rate constants of the investigated compounds with hydroxyl radical and NP with ozone were also determined. The estimated second-order rate constants of 4NP and NP with hydroxyl radicals were equal to 7.6 × 10⁸-1.3 × 10⁹ mol⁻¹ L s⁻¹. For NP, the determined rate constant with ozone was equal to 2.01 × 10⁶ mol⁻¹ L s⁻¹. The performed experiments showed that NP was slightly more susceptible to degradation by the UV radiation and hydroxyl radicals than 4NP. The study demonstrated also that the polychromatic UV-light alone and also in combination with selected oxidizers (i.e. hydrogen peroxide, ozone) may be successfully used for the removal of selected NPs from the aqueous medium. |
| Doi | 10.2166/wst.2015.011 |
| Pmid | 25714646 |
| Wosid | WOS:000351210900019 |
| Url | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925241987&doi=10.2166%2fwst.2015.011&partnerID=40&md5=26b606073e8759f94e7ec39f5372745b |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |