Abstract
This study makes a comparison between Fenton and photo-Fenton processes to study the mineralization of aqueous dimethyl phthalate (DMP) solutions, which was chosen as the model phthalate ester. At [Fe2+] 0:[H2O2]o ratio of 1:5 with initial Fe 2+ and H2O2 concentrations of 10 mM and 50 mM provided the best operation condition for the Fenton treatment of aqueous DMP solutions in terms of DMP (100%), COD (86%), and TOC (69%) removals. The rate of DMP degradation as well as COD and TOC abatements were increased by irradiation of Fenton's reaction with UV-C light (photo-Fenton process). At the end of the 60 min treatment period, practically total mineralization was achieved for photo-Fenton process at the [Fe2+]0:[H2O 2]0 ratios of 0.5:30 and 2:20. Results expressed as the percentage inhibition of the luminescence of the marine bacteria Vibrio fischeri showed that the inhibitory effect of DMP was reduced after Fenton and photo-Fenton treatments, thus these processes can be suggested as promising methods to detoxify aqueous DMP solution.
| Original language | English |
|---|---|
| Pages (from-to) | 3136-3141 |
| Number of pages | 6 |
| Journal | Fresenius Environmental Bulletin |
| Volume | 21 |
| Issue number | 10 A |
| Publication status | Published - 2012 |
Keywords
- Aqueous dimethyl phthalate solution
- Endocrine disrupting compound
- Fe:ho molar ratio
- Fenton process
- Photo-Fenton process
- Toxicity