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

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

Abstract

2-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-through reactor. Chemosphere, 70(6), 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
• Journal: Chemosphere
• Print ISSN: 0045-6535
• Electronic ISSN: 1879-1298
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 70
• Issue: 6
• 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