Radical-induced destruction of diethyl phthalate in aqueous solution: kinetics, spectral properties, and degradation efficiencies studies
Liu, N; Xu, G; Wu, M; He, X; Tang, L; Shi, W; Wang, L; Shao, H
| HERO ID | 2288683 |
|---|---|
| In Press | No |
| Year | 2013 |
| Title | Radical-induced destruction of diethyl phthalate in aqueous solution: kinetics, spectral properties, and degradation efficiencies studies |
| Authors | Liu, N; Xu, G; Wu, M; He, X; Tang, L; Shi, W; Wang, L; Shao, H |
| Journal | Research on Chemical Intermediates |
| Volume | 39 |
| Issue | 8 |
| Page Numbers | 3727-3737 |
| Abstract | In this work, the reactions of (OH)-O-a (TM), e (aq) (-) , and SO (4) (a (TM) a') with diethyl phthalate (DEP) were investigated in aqueous solution by pulse radiolysis, and degradation efficiencies of DEP with (OH)-O-a (TM) and e (aq) (-) were evaluated in water using steady-state radiolysis as well. The absolute rate constants of (OH)-O-a (TM), e (aq) (-) , and SO (4) (a (TM) a') with DEP were determined as 2.3 x 10(9), 1.0 x 10(10), and 1.0 x 10(8) M-1 s(-1), respectively. The degradation efficiencies for the (OH)-O-a (TM) and e (aq) (-) reactions were 81 and 33 %, respectively. Transient absorption spectra were observed for the intermediate radicals produced by (OH)-O-a (TM), e (aq) (-) , and SO (4) (a (TM) a') reactions. The results suggested that e (aq) (-) transferred to the ester group, resulting in the formation of DEP radical anions. In contrast, (OH)-O-a (TM) and SO (4) (a (TM) a') added predominantly to the aromatic ring of DEP, forming the corresponding (OH)-O-a (TM) adducts. The fundamental mechanistic parameters and degradation efficiencies derived from these results were significant for evaluations and applications of advanced oxidation processes. |
| Doi | 10.1007/s11164-012-0876-3 |
| Wosid | WOS:000324512900022 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Scopus URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84885174809&doi=10.1007%2fs11164-012-0876-3&partnerID=40&md5=ffd1100e04049e9fee125590cd86474b |
| Is Public | Yes |
| Language Text | English |
| Keyword | DEP; Transient absorption spectra; Absolute rate constant; Degradation efficiency |