钛基氧化物电极的制备及处理印染废水的研究  

Preparation of Ti-based oxide electrode and its treatment of printing and dyeing wastewater

作　　者：狄志清 张钱丽[1] 魏杰[1] 

机构地区：[1]苏州科技学院化学生物与材料工程学院,江苏苏州215009

出　　处：《苏州科技学院学报（自然科学版）》2015年第1期36-40,共5页Journal of Suzhou University of Science and Technology （Natural Science Edition）

基　　金：国家自然科学基金资助项目(51178283);江苏省"六大人才高峰"基金资助项目;江苏省"研究生科研创新计划"基金资助项目(CXZZ13_0858)

摘　　要：采用电沉积法制备了Ti/α-PbO2/β-PbO2电极。利用扫描电镜、X-射线衍射和阳极极化曲线对所制备的电极进行了表征,并通过正交试验,筛选出了降解印染废水的最佳工艺条件。结果表明:Ti/α-PbO2/β-PbO2电极具有较高的析氧电位(3.1 V)和较长的工业使用寿命(96 000 h)。降解印染废水的最佳工艺条件:初始浓度为650 mg·L-1、电解质种类为NaCl+Na2SO4、电流密度为0.05 A·cm-2、板间距为3 cm。在此工艺条件下,印染废水COD去除率为68.23%、脱色率为79.21%。The Ti/α-PbO2/β-PbO2 electrode was prepared by using electrodeposition method. SEM,XRD and LSV were used to characterize the electrode. The optimal conditions for degradation of printing and dyeing wastewater were determined by orthogonal test. The results show that Ti/α-PbO2/β-PbO2 electrode has high oxygen evolution potential（3.1 V） and long service life（96 000 h）. The optimal operating conditions for degradation of printing and dyeing wastewater were that the initial concentration was 650 mg·L-1,electrolyte NaCl＋Na2SO4,current density 0.05 A·cm-2and plate spacing 3 cm. Under this condition,COD removal rate and decolorization rate were 68.23% and 79.21% respectively.

关 键 词：电催化氧化 Ti/α-PbO2/β-PbO2电极 印染废水 

分 类 号：X703[环境科学与工程—环境工程]