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Degradation of chlorophenols in aqueous media using UV XeBr excilamp in a flow reactor

Matafonova, Galina; Christofi, Nicholas; Batoev, Valeriy; Sosnin, Edward

Authors

Galina Matafonova

Nicholas Christofi

Valeriy Batoev

Edward Sosnin



Abstract

-Chlorophenol (2-CP), 4-chlorophenol (4-CP) and 2,4-dichlorophenol (2,4-DCP) at initial concentrations of 10, 20, 50 and 100 mg l−1 were degraded in aqueous media by direct UV photolysis using dielectric barrier discharge XeBr* excilamp (283 nm) in a flow-through photoreactor. The pseudo-first order rate constants were highest and half-life times were lowest for 4-CP. The rates of photolysis under the experimental conditions increased in the order: 2-CP < 2, 4-DCP < 4-CP. The intermediates of photolysis were identified by GC–MS and HPLC. The evolution of hydroquinone and p-benzoquinone as major intermediates of 4-CP photolysis was monitored.

Citation

Matafonova, G., Christofi, N., Batoev, V., & Sosnin, E. (2008). Degradation of chlorophenols in aqueous media using UV XeBr excilamp in a flow reactor. Chemosphere, 70, 1124-1127. https://doi.org/10.1016/j.chemosphere.2007.08.022

Journal Article Type Article
Publication Date 2008-01
Deposit Date May 25, 2009
Print ISSN 0045-6535
Electronic ISSN 0045-6535
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 70
Pages 1124-1127
DOI https://doi.org/10.1016/j.chemosphere.2007.08.022
Keywords Excilamp; Chlorophenols; Direct photolysis; Flow-through photoreactor;
Public URL http://researchrepository.napier.ac.uk/id/eprint/2616
Publisher URL http://dx.doi.org/10.1016/j.chemosphere.2007.08.022