活性炭负载CuO催化过硫酸盐去除活性艳红X-3B染料

Degradation of Reactive Brilliant Red X-3B by CuO/AC catalyzed persulfate

利用活性炭吸附法及基于SO-4·的高级氧化技术,以活性炭和过渡金属氧化物Cu O为催化剂,催化过硫酸盐产生SO-4·降解活性艳红X-3B染料。结果表明,活性炭负载Cu O催化过硫酸盐可有效去除活性艳红X-3B,色度去除率达90%以上,显著优于活性炭(21.53%)、过硫酸盐(46.88%)、活性炭催化过硫酸盐(53.67%)(P<0.05)。活性艳红X-3B的催化降解效果受Cu O负载量、pH、过硫酸盐投加量、温度的影响。单因素法研究表明,各因素最佳条件为:负载量活性炭与Cu O质量比为1∶5,投加量0.2 g,pH为3,过硫酸钠投加量0.2 g,反应温度40℃,活性艳红X-3B的色度去除率分别达到91.34%、95.57%、98.54%和98.81%,COD去除率分别为82.73%、88.89%、87.60%和93.46%。

We utilized activated carbon and transitional metal oxide Cu O as catalyst to catalyze persulfate to produce SO4-· for degradation of reactive brilliant red X-3B dye by employing activated carbon absorption process and SO4-·based advanced oxidation technology. The results indicate that the use of activated carbon supported Cu O to catalyze persulfate can effectively degrade reactive brilliant red X-3B,with a chroma removing rate as high as 90% or higher,obviously superior to activated carbon（ 21. 53%）,persulfate（ 46. 88%） and activated carbon catalyzed persulfate（ 53. 67%）（ P〈 0. 05）. The catalytic degradation result of reactive brilliant red X-3B is affected by Cu O support,pH,dosage of persulfate and temperature. Single factor research indicated that under the optimal conditions of the various factors： support activated carbon： Cu O mass ratio of 1 ∶ 5,the dosage of0. 2 g,pH of 3,sodium persulfate dosage of of 0. 2 g and the reaction temperature of 40℃,the chroma removal rates of reactive brilliant red X-3B can be as high as 91. 34%,95. 57%,98. 54% and 98. 81%,respectively,while the chroma removal rates of COD can be 82. 73%,88. 89%,87. 60% and 93. 46%,respectively.