Competitive Removal of Two Contaminants in a Goethite-Catalyzed Fenton Process at Neutral pH
Yeh, KJ; Chen, TC; Young, W
HERO ID
2128497
Reference Type
Journal Article
Year
2013
Language
English
| HERO ID | 2128497 |
|---|---|
| In Press | No |
| Year | 2013 |
| Title | Competitive Removal of Two Contaminants in a Goethite-Catalyzed Fenton Process at Neutral pH |
| Authors | Yeh, KJ; Chen, TC; Young, W |
| Journal | Environmental Engineering Science |
| Volume | 30 |
| Issue | 2 |
| Page Numbers | 47-52 |
| Abstract | Plumes containing more than one contaminant can be found in sites polluted by gasoline or chlorinated solvents. This study evaluated Fenton-like removal efficiencies when two contaminants were coexistent. Perchloroethylene, trichloroethylene, cis-1,2-dichloroethylene, methyl-t-butyl-ether, benzene, and toluene were mixed in pairs and degraded by the goethite-catalyzed Fenton-like reaction at neutral pH and low H2O2 doses. Results revealed that the amount of each compound removed in two-contaminant systems was less than that in one-contaminant systems. This decline in removal was related to the reactivity constant (k(HO center dot)), initial concentration (C-0), and number of double bonds of the compounds. In a solution that contained two compounds with similar k(HO center dot) values, the amount of each compound removed was related primarily to the C-0 ratio of two compounds. When the k(HO center dot) values of two compounds differed considerably, the one with the larger k(HO center dot) value or the higher C-0 reduced or inhibited the Fenton-like reaction of the pollutant with the smaller k(HO center dot) or lower C-0. Compounds with few double bonds tended to be less competitive for Fenton-like removal. By adding H2O2 repeatedly, the removal of a compound that is less competitive for the Fenton-like reaction can be recovered. |
| Doi | 10.1089/ees.2012.0001 |
| Wosid | WOS:000314979000001 |
| Url | https://search.proquest.com/docview/1560130100?accountid=171501 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | aromatic hydrocarbons; chlorinated ethylenes; Fenton reaction; in-situ remediation; MTBE |