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http://nopr.niscpr.res.in/handle/123456789/12603| Title: | Degradation of pesticide by combined photofenton-ozonation process and study of its synergistic effect |
| Authors: | Rajeswari, R Kanmani, S |
| Keywords: | Carbaryl;Combined photofenton-ozonation (PFO);Ozonation;Photofenton;Synergistic effect |
| Issue Date: | Sep-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | This study presents degradation of pesticide, carbaryl, by combined photofenton-ozonation (PFO) process. Experiments were conducted under pH (3-9), ferrous ion dosage (0-600 mg/l), hydrogen peroxide (0-4 g/l) and ozone dosages (0.12-0.57 g/h) for optimized reaction conditions of carbaryl degradation. Five experimental sets (UV/Fe2+/H2O2,UV /O3, Fe2+/H2O2, O3 and UV/Fe2+/H2O2/O3) were conducted under optimized conditions to prove synergistic effect. Kinetic study revealed increased rate constant in combined process (PFO, 0.0194 min-1) compared to individual process (photofenton, 0.0120 min-1; ozonation, 0.0112 min-1). Presence of inorganic ions such as nitrate indicated fragmentation of active pesticide structure. Complete removal of parent carbaryl and 86% mineralization was achieved at the end of 180 min treatment with combined processes. |
| Page(s): | 784-788 |
| ISSN: | 0975-1084 (Online); 0022-4456 (Print) |
| Appears in Collections: | JSIR Vol.70(09) [September 2011] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| JSIR 70(9) 784-788.pdf | 132.07 kB | Adobe PDF | View/Open |
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