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首页> 外文期刊>Journal of Photochemistry and Photobiology, A. Chemistry >Effect of iron salt on the color removal of water containing the azo-dye reactive blue 69 using photo-assisted Fe(II)/H2O2 and Fe(III)/H2O2 systems
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Effect of iron salt on the color removal of water containing the azo-dye reactive blue 69 using photo-assisted Fe(II)/H2O2 and Fe(III)/H2O2 systems

机译：铁盐对光辅助Fe（II）/ H2O2和Fe（III）/ H2O2体系中偶氮染料活性蓝69的脱色作用

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摘要

The effect of chloride,sulfate and nitrate anions on the color removal of water containing the azo-dye reactive blue 69(RB69)in acidic solution,by using photo-assisted Fenton process with Fe(II)/H2O2 and Fe(III)/H2O2 systems was investigated.Experiments were conducted in a batch reactor irradiated during 5h with a domestic 15W lamp with emission in the visible spectra.Experimental results showed color disappearance in the first 5 min of reaction in the photo-assisted process for all of the different salts,greatly enhancing the reaction rate with respect to the corresponding systems under dark conditions.The exception of the general trend was the Fe2(SO4)3/H2O2/UV system,where the decolorization process is slower probably because the oxidative species generated by rupture of Fe(III)-peroxo complexes are less reactive.Total organic matter depletion and mineralization of the effluent were also tested during the experimental runs by means of total organic carbon(TOC)showing that,for most of the photo-assisted experiments high mineralization was reached after 3 h of reaction.
机译：Fe（II）/ H2O2和Fe（III）/ F / Fenton光辅助法在酸性溶液中去除含偶氮染料活性蓝69（RB69）的水中氯离子，硫酸根和硝酸根阴离子对H2O2系统进行了研究，在分批反应器中进行了实验，该反应器在5h内用家用15W灯辐照，可见光发射，实验结果表明在光辅助过程中反应的前5分钟，所有不同的颜色消失的趋势是在Fe2（SO4）3 / H2O2 / UV系统中，脱色过程较慢，可能是由于破裂产生的氧化物质引起的。 Fe（III）-过氧配合物的反应性较低。在实验过程中还通过总有机碳（TOC）测试了废水中有机物的总耗竭和矿化，结果表明，大多数在光辅助实验中，反应3小时后达到高矿化度。

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