Abstract
The immobilization of cobalt ion on different media to catalyze oxone has been investigated. A probe herbicide, Monuron, was effectively degraded by using Co2+/oxone systems. For Co2+supported on zeolite, 100% of Monuron could be removed within a 10 min reaction time. However, the recycling of the spent Co-zeolite catalyst using various posttreatments did not give a promising result. This is likely because the zeolite particles in solution have blocked and significantly attenuated the incident UV light from reducing Co3+to Co2+. On the contrary, the use of cationic resin has minimized these problems. In the process of Co-resin/oxone/UV, faster Monuron decay could be achieved than that in the dark reaction. In the presence of UV, a significant drop of total organic carbon (TOC) was also observed in this approach suggesting an effective and clean process for Monuron mineralization.
Original language | English |
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Pages (from-to) | 5708-5713 |
Number of pages | 6 |
Journal | Journal of Agricultural and Food Chemistry |
Volume | 55 |
Issue number | 14 |
DOIs | |
Publication status | Published - 11 Jul 2007 |
Keywords
- Cobalt chloride
- Monuron
- Oxidation
- Oxone
- Sulfate radicals
ASJC Scopus subject areas
- General Chemistry
- General Agricultural and Biological Sciences