期刊论文

Preparation of a ceramic-based lead dioxide electrode and its application in treatment of Ni-EDTA complex wastewater

中文

工业水处理

1005-829X

2021

41

09

60-68

10.19965/j.cnki.iwt.2020-1230

“水体污染控制与治理”国家重大科技专项（2017ZX07202-001-007）； 国家自然科学基金项目（21777106）； 广东省公益研究与能力建设（2017A020216014）； 广东省应用型专项（2016B020240007,2015B020235004）；

本校为第一机构

采用化学沉积-电沉积法的方法制备了陶瓷/α-PbO2、陶瓷/α-PbO2/β-PbO2、陶瓷/α-PbO2/β-PbO2-PTFE电极,采用扫描电子显微镜（SEM）、X-射线衍射（XRD）、线性扫描伏安（LSV）和电极加速寿命等方法对电极进行表征及化学性能测试。分别以这3种电极作为阳极,电化学氧化Ni-EDTA,同时阴极电沉积回收镍。实验结果表明,陶瓷/α-PbO2/β-PbO2-PTFE比其他2种电极具有更高的电氧化破络能力,在Ni-EDTA初始质量浓度为100 mg/L、电流密度为30 mA/cm2,pH=3.1下电氧化180 min后,Ni-EDTA去除率可达96.2%,阴极镍元素回收率达17.9%。

The ceramic/α-PbO_2,ceramic/α-PbO_2/β-PbO_2,and ceramic/α-PbO_2/β-PbO_2-PTFE were prepared by chemical deposition-electrodeposition methods and characterized by scanning electron microscopy(SEM),X-ray diffraction( XRD),linear sweep voltammetry(LSV) and accelerated lifetime tests. The simultaneous decomplexation of Ni-EDTA and electrodeposition recovery of nickel metal were attempted in a combined electrooxidation-electrodeposition reactor with these three PbO_2 electrodes and polished titanium cathode. The results showed that the ceramic/α...