Photodegradation of methylene blue dye by the UV/H2O2 and UV/acetone oxidation processes

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Author Banat, F. en_US
Author Al-Asheh, Sameer en_US
Author Al-Rawashdeh, Ma'moun en_US
Author Nusair, Mohammad en_US
Available date 2010-01-07T06:19:31Z en_US
Publication Date 2005-04-07 en_US
Citation Fawzi Banat, Sameer Al-Asheh, Ma'moun Al-Rawashdeh, Mohammad Nusair, Photodegradation of methylene blue dye by the UV/H2O2 and UV/acetone oxidation processes, Desalination, Volume 181, Issues 1–3, 5 September 2005, Pages 225-232 en_US
URI http://dx.doi.org/10.1016/j.desal.2005.04.005 en_US
URI http://hdl.handle.net/10576/10610 en_US
Abstract The photodegradation of methylene blue (MB) dye in aqueous solutions was investigated using a laboratory-scale UV lamp in the presence of hydrogen peroxide (H2O2). Different initial concentrations of dyes (10, 20, 30, 40 ppm) were investigated using different doses of H2O2. Substantial decolorization of the dye was reached using UV/H2O2, where neither UV nor H2O2 alone was appreciably able to decolorize any of the dyes. The optimum dose of H2O2 increased with the increase of the initial concentration of the dye. The experimental decoloration kinetics data followed the pseudo-first-order reaction model. The time of decoloration increased with an increase in the initial dye concentration. The effect of the presence of photosensitized material such as acetone on the decoloration rate of the MB dye was also examined. Increasing acetone concentration shortened the time needed to completely decolorize MB solutions. The oxidation role of hydroxyl-free radicals was evaluated using sodium carbonate. en_US
Language en en_US
Publisher Elsevier B.V. en_US
Subject UV en_US
Subject Dye en_US
Subject H2O2 en_US
Subject Acetone en_US
Subject Carbonate en_US
Subject Free radicals en_US
Title Photodegradation of methylene blue dye by the UV/H2O2 and UV/acetone oxidation processes en_US
Type Article en_US


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