Efficient recovery of Sb(V) by hydrated electron reduction followed by cathodic deposition in a photoelectrochemical process
文献类型：期刊论文
| 作者 | Zhao, Xu; Cao, Di; Su, Peidong; Guan, Xiaohong |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2020-09-01 |
| 卷号 | 395页码:1-12 |
| 关键词 | Sb recovery Hydrated electrons Cathodic reduction Sulfite UV light |
| ISSN号 | 1385-8947 |
| 英文摘要 | Recovery of antimony (Sb) from wastewater is desired. Deposition of Sb(III) to metal Sb can occur via cathodic reduction, which is limited for Sb(V) reduction. Herein, a UV/sulfite-assisted electrodeposition (UV/sulfite/E) system was developed for the recovery of Sb(V) as metal Sb. The hydrated electron (e(aq)(-)) generated from UV/ sulfite process reduced Sb(V) to Sb(III), which was simultaneously reduced to metal Sb via cathodic reduction. Results indicated that as high as 95% of Sb(V) with a concentration of 50 mg/L can be deposited onto the cathode as metal Sb within 6 h. The reduction of Sb(V) to Sb(III) by eaq-was confirmed by laser flash photolysis tests. More importantly, the OH-generated at cathode increased the pH of the UV/sulfite/E system and enabled the eaq-generation even at pH=4, which was beneficial for Sb(V) reduction at a wide pH range. The optimal conditions for Sb(V) recovery were found to be at a sulfite concentration of 10mM and an applied potential of -1.2 V (vs. SCE). The recovery of Sb(V) from practical Sb-containing wastewater was finally carried out and the results indicated that more than 60% of Sb was recovered as metal Sb. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45279]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhao, Xu,Cao, Di,Su, Peidong,et al. Efficient recovery of Sb(V) by hydrated electron reduction followed by cathodic deposition in a photoelectrochemical process[J]. CHEMICAL ENGINEERING JOURNAL,2020,395:1-12. |
| APA | Zhao, Xu,Cao, Di,Su, Peidong,&Guan, Xiaohong.(2020).Efficient recovery of Sb(V) by hydrated electron reduction followed by cathodic deposition in a photoelectrochemical process.CHEMICAL ENGINEERING JOURNAL,395,1-12. |
| MLA | Zhao, Xu,et al."Efficient recovery of Sb(V) by hydrated electron reduction followed by cathodic deposition in a photoelectrochemical process".CHEMICAL ENGINEERING JOURNAL 395(2020):1-12. |
入库方式： OAI收割
来源：生态环境研究中心
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