Oxidative degradation of Basic Black 3 by electro-generated Fenton's reagent using carbon fiber cathode
Oxidative degradation of Basic Black 3 by electro-generated Fenton's reagent using carbon fiber cathode
复制标题
DOI：
10.1007/s10098-016-1134-y
复制
发表时间：
2016-06-01
影响因子：
4.3
通讯作者：
Gokkus, Omur
中科院分区：
文献类型：
--
作者：
Gokkus, Omur
采用电芬顿（EF）法对碱性黑3（BB 3）（一种常用的纺织染料）进行脱色和矿化，并考察了碳纤维作为阴极材料对原位电生成H2 O2的处理性能。总有机碳（TOC）和颜色去除被选为该工艺的性能指标。通过对pH值、Fe 2+浓度、电流、氧气流量、支持电解质浓度等操作参数的优化，确定了最佳处理条件为：pH = 3、Fe 2+浓度为100 mg/L、电流为200 mA、氧气流量为0.5 L/min、支持电解质浓度为50 mM。在此最佳条件下，电解100 min，脱色完全，TOC去除率为39.1%.研究结果表明，EF工艺对BB 3具有矿化和脱色作用，可作为常规处理方法前的预处理技术，降低废水毒性，提高废水的可生化性。研究结果表明，碳纤维阴极可作为电化学废水处理技术的一种替代方案。
In this study, electro-Fenton (EF) process was used for the decolorization and mineralization of Basic Black 3 (BB3) (a popular textile dye), and the treatment performance of carbon fiber was investigated as a different cathode material to in situ electro-generated H2O2. Total organic carbon (TOC) and color removal were selected as performance indicators of the process. For this purpose, some operational parameters such as pH, Fe2+ concentration, current, oxygen flow rate, and supporting electrolyte concentration were optimized, and the best treatment conditions were found as 3, 100 mg/L, 200 mA, 0.5 L/min, and 50 mM, respectively. At these optimum conditions, complete color removal and 39.1 % TOC removals were achieved in 100 min of electrolysis time. The results obtained from the study indicate that EF process can mineralize and decolorize BB3, therefore, it can be selected as a pre-treatment technology before different conventional treatment methods for reducing toxicity and enhancing the biodegradability of wastewater. According to the results, carbon fiber cathode may offer a wastewater treatment alternative by electrochemical technologies.