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Application of response surface method to carbamazepine removal in photo-ozonation reaction under alkaline condition

Cited 3 time in Web of Science Cited 4 time in Scopus
Authors

Im, J. K.; Zoh, K. D.

Issue Date
2013
Publisher
International Water Association Publishing
Citation
Water Science and Technology, Vol.67 No.1, pp.74-81
Abstract
In this study, the photo-ozonation reaction for carbamazepine (CBZ) removal was investigated under alkaline conditions. Response surface methodology based on a central composite design was used to obtain the optimum experimental conditions, and examine both main and interaction effects of the photo-ozonation reaction variables such as O-3 concentration, H2O2 concentration and UV intensity. The level of O-3 concentration significantly influenced CBZ removal (p < 0.001). CBZ removal increased with increasing both O-3 and H2O2 concentration up to a certain level, whereas further increase in O-3 and H2O2 concentration resulted in an adverse effect due to the hydroxyl radical scavenging effect. The optimum conditions for complete CBZ removal at pH 9 were found to be 0.89 mg of O-3 l(-1), 4.85 mg of H2O2 l(-1) and 3.18 mW of UV intensity cm(-2), respectively.
ISSN
0273-1223
URI
https://hdl.handle.net/10371/190735
DOI
https://doi.org/10.2166/wst.2012.449
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