DigitalUM :: Browsing by browse.metadata.contributordepartment "Baikal Institute of Nature Management, Siberian Branch of Russian Academy of Sciences, Russia"

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Open Access
Testing a KrCl excilamp as new enhanced UV source for 4-chlorophenol degradation: experimental results and kinetic model.
(Elsevier, 2010) M. Gomez; M.D. Murcia; J.L. Gomez; G. Matafonova; V. Batoev; N. Christofi; Ingeniería Química; Baikal Institute of Nature Management, Siberian Branch of Russian Academy of Sciences, Russia; Pollution Research Unit, School of Life Sciences, Napier University, Merchiston Campus, Edinburgh
Excilamps are new UV sources with great potential for application in wastewater treatment. In the present work, a KrCl excilamp emitting radiation at 222 nm has been used for the photodegradation of 4-chlorophenol within a range of concentrations from 50 to 500 mg L-1. The photodegradation process has been shown to form two main photoproduct intermediates, benzoquinone and hydroquinone. Total removal of 4- chlorophenol was shown for all concentrations assayed, and, for both main intermediates, residual concentrations of 20–30 % of the initial concentration of 4-chlorophenol remained. Their increasing presence with increasing initial concentrations of 4-chlorophenol had the effect of decreasing the removal efficiency of the photoproducts. In order to simulate the process and scale-up a simplified kinetic model has been developed and validated from the experimental data.