金红石- TiO2悬浮液对偶氮卡莫辛染料(E122)去除及光脱色的协同效应

Thaqeef M. Jawad, Mohammed R. Al-Lami, A. S. Hasan, J. A. Al-Hilifi, R. Mohammad, L. Ahmed
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引用次数: 2

摘要

暗反应和光反应作为协同技术已被用于处理各种有害的有机水污染物。用金红石- TiO2和UV-A光对偶氮胭脂红染料(E122)在水溶液中的去除(暗反应)和光脱色(光反应)进行了研究。测定了氧化剂、温度等参数。在暗反应中,随着温度的降低,吸附量和卡莫辛染料去除率均有所提高。这种暗色反应具有放热、物理吸附、随机性小、非自发、反应快、活化能低的特点。在染料溶液中加入Fe(II)和H2O2,去除率最高可达86%。在光反应中,将相同的氧化剂应用于染料溶液中,发现该反应是一个准一级动力学,放热反应,快速(低活化能),随机性较小,自发。Fe(II)与h2o2混合后,30 min脱色率达到64.28%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Synergistic Effect of dark and photoreactions on the removal and photo-decolorization of azo carmosine dye (E122) as food dye using Rutile- TiO2 suspension
Dark and photoreactions have been employed to handle the various hazardous organic water contaminants as Synergistic technologies. The removal (dark reaction) and the photo-decolorization ( photoreaction) of azo carmosine dye (E122) as a food dye in an aqueous solution using Rutile- TiO2 and UV-A light were investigated in this work. Various parameters such as oxidant agents and temperature were determined. In dark reaction, the adsorption capacity and percentage of carmoisine dye removal elevated with depressing of the temperature. This dark reaction of carmoisne dye is exothermic, physical adsorption, less random, non-spontaneous, and quick response with low activation energy. The maximum value removal % is reached to 86 % when addition mixing of Fe(II) and H2O2 to dye solution. In photoreaction, the same oxidant agents were applied in the dye solution and found the reaction is a pseudo-first-order kinetic, exothermic reaction, fast (low activation energies), less random, and spontaneous. The maximum percentage of decolorization with the addition of mixing of Fe(II) and H2O2equal to 64.28% at 30 min.
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