采用协同电絮凝-催化臭氧化工艺，用 CuMnO/gCN 改性沸石去除活性黑 5（RB-5）染料的催化臭氧化。
Catalytic ozonation for the removal of reactive black 5 (RB-5) dye using zeolites modified with CuMnO/gCN in a synergic electro flocculation-catalytic ozonation process.
机构信息
Institute of Environmental Engineering and Research, University of Engineering and Technology, Lahore, Pakistan.
Department of Chemical Engineering, University of Engineering and Technology, Lahore, Pakistan E-mail:
出版信息
Water Sci Technol. 2021 Oct;84(8):1943-1953. doi: 10.2166/wst.2021.404.
This study aims to investigate the decolourization efficiency of reactive black 5 (RB-5) dye by using CuMnO/gCN coated zeolites (zeolite 4A) for the first time in a hybrid electro-flocculation-catalytic ozonation process. A comparison between various treatment options such as electro-flocculation, electro-flocculation in the presence of a catalyst, and catalytic ozonation in combination with electro-flocculation was explored. Moreover, the effect of different factors such as pH, time, catalyst dose, ozone dose, radical scavenger, and voltage has been studied in each treatment option mentioned earlier. The results indicated that the best treatment option was found to be catalytic ozonation in combination with electro-flocculation with removal efficiency (RE) of 90.31% at pH 10 after 30 min of the treatment process. The hydroxyl radical scavenger effect indicated that the synergistic catalytic process follows a radical mechanism. It is therefore concluded that CuMnO/gCN-zeolite catalysts in synergic electro-flocculation-catalytic ozonation process may be effectively used for the treatment of textile wastewaters.
本研究首次采用 CuMnO/gCN 涂层沸石（沸石 4A）在混合电絮凝-催化臭氧化工艺中研究了活性黑 5（RB-5）染料的脱色效率。比较了各种处理方案，如电絮凝、催化剂存在下的电絮凝以及与电絮凝相结合的催化臭氧化。此外，还研究了在每种提到的处理方案中不同因素（如 pH 值、时间、催化剂剂量、臭氧剂量、自由基清除剂和电压）的影响。结果表明，在 pH 值为 10 且处理过程 30 分钟后，发现最佳的处理方案是催化臭氧化与电絮凝相结合，去除效率（RE）为 90.31%。羟基自由基清除剂效应表明，协同催化过程遵循自由基机制。因此，可以得出结论，协同电絮凝-催化臭氧化工艺中的 CuMnO/gCN-沸石催化剂可有效用于处理纺织废水。
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