摘要
以Ti/SnO_(2)-Sb形稳电极(DSA)为基底,采用浸渍法制备负载有活性层的Ti/SnO_(2)-Sb/SnO_(2)-Sb-Mn电极并进行了表征。利用box-behnken实验设计及响应曲面分析法,探讨槽压、搅拌速率、电极间距这三个因素对亚甲基蓝电催化脱色效率的影响,并建立相应的多元二次回归模型,方差分析结果表明,模型的拟合效果好,影响因素的显著性顺序依次为:槽压>电极间距>搅拌速率。验证实验结果显示,当槽压为4.8V、搅拌速率为320r/min、电极间距为1.5cm时,亚甲基蓝的脱色效果达到最佳,此时脱色率达到99.3%,模型的预测值非常接近实验值,验证了该方法的可行性和有效性,可为电催化脱色处理印染废水提供一定的技术指导。
Ti/SnO_(2)-Sb/SnO_(2)-Sb-Mn electrode was prepared and characterized.The results showed that the intermediate layer played a great role in the electrochemical performance.The box-behnken model was used to optimize the electrochemical degradation of dye wastewater.The effect of electrolytic voltage,stirring rate and electrode span on degradation rate was quantitatively analyzed.A predictive model was established based on the degradation rate as the response value.The analysis showed that the selected mathematical model was well fitted,the influence factors followed the order:electrolytic voltage>electrode span>stirring rate.The optimum conditions were 4.8V,320r/min,1.5cm,and the predicted degradation rate could reach 99.3%.The predicted value of the model was close to the experimental data which illustrated the feasibility and effectiveness of the proposal method.This study could provide the technical guidance for the treatment of dyeing wastewater by electrocatalysis degradation.
作者
朱连燕
周幸福
ZHU Lianyan;ZHOU Xingfu(Department of Education and Science,Nanjing Polytechnic Institute,Nanjing 210048,Jiangsu,China;College of Chemistry and Chemical Engineering,Nanjing Tech University,Nanjing 211816,Jiangsu,China)
出处
《化工进展》
EI
CAS
CSCD
北大核心
2024年第6期3459-3467,共9页
Chemical Industry and Engineering Progress
基金
国家自然科学基金面上项目(21676146,51272104)。
