Photoelectrocatalytic Oxidation of Cu-II-EDTA at the TiO2 Electrode and Simultaneous Recovery of Cu-II by Electrodeposition
文献类型：期刊论文
| 作者 | Zhao, Xu ; Guo, Libao ; Zhang, Baofeng ; Liu, Huijuan ; Qu, Jiuhui |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2013 |
| 卷号 | 47期号:9页码:4480-4488 |
| 通讯作者 | Liu, HJ |
| 中文摘要 | The simultaneous decomplexation of Cu-EDTA and electrocleposition recovery of Cu2+ ions was attempted in a photoelectrocatalytic (PEC) system using TiO2/Ti as the anode and stainless steel as the cathode. At a current density of 0.5 mA/cm(2), removal efficiencies of 0.05 mM Cu-EDTA by photocatalysis, electrooxidation, and PEC processes were determined to be 15, 43, and 72% at 3 h, respectively. Recovery percentages of Cu2+ ions were determined to be 10, 33, and 67%, respectively. These results indicated that a synergetic effect in the decomplexation of Cu-EDTA and recovery of Cu2+ ions occurred in the PEC process, which favored acid conditions and increased with the current densities. The removal of Cu-EDTA and Cu2+ ions can be described by a pseudo-first-order kinetics model. Ca2+ ions significantly increase the removal of Cu-EDTA and recovery of Cu2+ ions. Intermediates, including Cu-NTA, Cu-EDDA, acetic acid, formic acid, and oxalic acid, were identified, and a decomplexation pathway of Cu-EDTA was proposed. The Cu-EDTA decomplexation at the anode via oxidation of hydroxyl radicals was revealed. On the basis of X-ray photoelectron spectra analysis, a reduction pathway of Cu2+ ions at the cathode was discussed. The present study may provide a promising alternative for destruction of the metal complex and recovery of metal ions. |
| 收录类别 | SCI |
| WOS记录号 | WOS:000318756000067 |
| 公开日期 | 2014-06-06 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7426]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhao, Xu,Guo, Libao,Zhang, Baofeng,et al. Photoelectrocatalytic Oxidation of Cu-II-EDTA at the TiO2 Electrode and Simultaneous Recovery of Cu-II by Electrodeposition[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2013,47(9):4480-4488. |
| APA | Zhao, Xu,Guo, Libao,Zhang, Baofeng,Liu, Huijuan,&Qu, Jiuhui.(2013).Photoelectrocatalytic Oxidation of Cu-II-EDTA at the TiO2 Electrode and Simultaneous Recovery of Cu-II by Electrodeposition.ENVIRONMENTAL SCIENCE & TECHNOLOGY,47(9),4480-4488. |
| MLA | Zhao, Xu,et al."Photoelectrocatalytic Oxidation of Cu-II-EDTA at the TiO2 Electrode and Simultaneous Recovery of Cu-II by Electrodeposition".ENVIRONMENTAL SCIENCE & TECHNOLOGY 47.9(2013):4480-4488. |
入库方式： OAI收割
来源：生态环境研究中心
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