Towards a better understanding of the synergistic effect in the electro-peroxone process using a three electrode system
文献类型:期刊论文
作者 | Guo, Zhuang1,2; Xie, Yongbing1; Wang, Yuxian3; Cao, Hongbin1; Xiao, Jiadong1,2; Yang, Jin1; Zhang, Yi1 |
刊名 | CHEMICAL ENGINEERING JOURNAL |
出版日期 | 2018-04-01 |
卷号 | 337页码:733-740 |
ISSN号 | 1385-8947 |
关键词 | Electro-peroxone Hydrogen Peroxide Hydroxyl Radicals Three-electrode System Rotating Ring-disk Electrode |
DOI | 10.1016/j.cej.2017.11.178 |
文献子类 | Article |
英文摘要 | Electro-peroxone process utilizes the in-situ generated H2O2 by electro-reduction of O-2 to react with ozone molecule to produce hydroxyl radical, and achieves high efficiency in the wastewater treatment. However, detailed reaction mechanism in this process is still deficient. In this paper, a three-electrode system was adopted in the electro-peroxone process, and the origin of the synergy was revealed with the aid of the rotating ring disk electrodes. It was found that besides the main reaction between O-3 and H2O2, O-3 is also electro-reduced to O-3(center dot-) and then transformed into (OH)-O-center dot. Meanwhile, O-3 electro-reduction on the cathode can also possibly generate O-2 and promote H2O2 production. Higher concentration of OH- near the cathode originated from O-2 and O-3 reduction may also react with O-3 to produce H2O2. These two pathways contributed to the higher amount of H2O2 than the system with O-2 bubbling only, and ultimately contributed to produce more (OH)-O-center dot. All these reactions are synthetically responsible for the higher degradation rate of sodium oxalate in the electro-peroxone process than those in O-3-electrolysis and ozonation processes, respectively. Though this system was quite different from normal electro-peroxone process, the conclusions are useful for understanding the practical reactions possibly happened on electrodes in the electro-peoxone process. |
WOS关键词 | Waste-water Treatment ; Advanced Oxidation Processes ; Activated Carbon ; Catalytic Ozonation ; Visible-light ; Oxalic-acid ; Degradation ; Mechanism ; Removal ; Ozone |
WOS研究方向 | Engineering |
语种 | 英语 |
WOS记录号 | WOS:000427616900072 |
资助机构 | National Science Fund for Distinguished Young Scholars of China(51425405) ; Beijing Natural Science Foundation(8172043) ; Major Science and Technology Program for Water Pollution Control and Treatment(2015ZX07202013) |
源URL | [http://ir.ipe.ac.cn/handle/122111/24120] |
专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
作者单位 | 1.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing Engn Res Ctr Proc Pollut Control, Div Environm Technol & Engn,Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Univ Petr, State Key Lab Heavy Oil Proc, 18 Fuxue Rd, Beijing 102249, Peoples R China |
推荐引用方式 GB/T 7714 | Guo, Zhuang,Xie, Yongbing,Wang, Yuxian,et al. Towards a better understanding of the synergistic effect in the electro-peroxone process using a three electrode system[J]. CHEMICAL ENGINEERING JOURNAL,2018,337:733-740. |
APA | Guo, Zhuang.,Xie, Yongbing.,Wang, Yuxian.,Cao, Hongbin.,Xiao, Jiadong.,...&Zhang, Yi.(2018).Towards a better understanding of the synergistic effect in the electro-peroxone process using a three electrode system.CHEMICAL ENGINEERING JOURNAL,337,733-740. |
MLA | Guo, Zhuang,et al."Towards a better understanding of the synergistic effect in the electro-peroxone process using a three electrode system".CHEMICAL ENGINEERING JOURNAL 337(2018):733-740. |
入库方式: OAI收割
来源:过程工程研究所
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