Publication: Testing a KrCl excilamp as new enhanced UV source for 4-chlorophenol degradation: experimental results and kinetic model.
Authors
M. Gomez ; M.D. Murcia ; J.L. Gomez ; G. Matafonova ; V. Batoev ; N. Christofi
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Publisher
Elsevier
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DOI
https://doi.org/10.1016/j.cep.2009.11.016
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info:eu-repo/semantics/article
Description
© <2021>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
This document is the Accepted Manuscript version of a Published Work that appeared in final form in [Chemical Engineering and Processing: Process Intensification ]. To access the final edited and published work see [https://doi.org/10.1016/j.cep.2009.11.016].
Abstract
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.
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Citation
Chemical Engineering and Processing: Process Intensification, 49 (1), 2010, 113-119
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