Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31894
Title: Selection of supported cobalt substrates in the presence of oxone for the oxidation of monuron
Authors: Chu, W 
Choy, WK
Kwan, CY
Keywords: Cobalt chloride
Monuron
Oxidation
Oxone
Sulfate radicals
Issue Date: 2007
Publisher: American Chemical Society
Source: Journal of agricultural and food chemistry, 2007, v. 55, no. 14, p. 5708-5713 How to cite?
Journal: Journal of agricultural and food chemistry 
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.
URI: http://hdl.handle.net/10397/31894
ISSN: 0021-8561
DOI: 10.1021/jf063754r
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