Simultaneous achievement of refractory pollutant removal and energy production in the saline wastewater treatment | |
Xiao, Ke; Chen, Siyuan; Yang, Bo; Zhao, Xu; Yu, Gang; Zhu, Caizhen | |
刊名 | CHEMICAL ENGINEERING JOURNAL |
2019-08-01 | |
卷号 | 369页码:845-853 |
关键词 | Saline wastewater Perfluorinated compounds Energy recovery Photocatalytic oxidation Flocculation |
ISSN号 | 1385-8947 |
英文摘要 | A novel solar-wastewater-energy recovery system was presented to simultaneously remove refractory organic pollutants from saline wastewater and produce energy. To accomplish this goal, a two-chamber cell was fabricated. The anode chamber integrating photo-oxidation and flocculation was developed by using a TiO2 nanotube array (TNA) and Al foil. A dopamine modified carbon felt (DPA/CF) electrode was located in the cathode chamber to produce H2O2 by the two-electron reduction of O-2 with electrons generated on the anodes. Under sunlight irradiation, the TNA photoanode initiated the degradation of perfluorodecylamine (PFDA) as typical refractory pollutant and selectively transformed its organic nitrogen to N-2 and NO3- with yields of 87% and 12%, respectively. Compared with PFDA removal efficiency using single flocculation, the efficiency was improved by more than 5 times (ca. 96.6%) in the combined process of photo-oxidation and flocculation center dot H2O2 production was also achieved using the DPA/CF cathode, obtaining a high concentration of 5.0 mM. Furthermore, this study revealed that the reversible reaction between dehydrogenation and hydrogenation on polydopamine accomplished the catalytic reduction of O(2)to H2O2. The present study proposes a new approach involving energy recovery in saline wastewater treatment for an energy-sustainable society. |
内容类型 | 期刊论文 |
源URL | [http://ir.rcees.ac.cn/handle/311016/42671] |
专题 | 生态环境研究中心_环境水质学国家重点实验室 |
作者单位 | 1.Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen 518060, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 3.Tsinghua Univ, POPs Res Ctr, Sch Environm, Beijing 100084, Peoples R China |
推荐引用方式 GB/T 7714 | Xiao, Ke,Chen, Siyuan,Yang, Bo,et al. Simultaneous achievement of refractory pollutant removal and energy production in the saline wastewater treatment[J]. CHEMICAL ENGINEERING JOURNAL,2019,369:845-853. |
APA | Xiao, Ke,Chen, Siyuan,Yang, Bo,Zhao, Xu,Yu, Gang,&Zhu, Caizhen.(2019).Simultaneous achievement of refractory pollutant removal and energy production in the saline wastewater treatment.CHEMICAL ENGINEERING JOURNAL,369,845-853. |
MLA | Xiao, Ke,et al."Simultaneous achievement of refractory pollutant removal and energy production in the saline wastewater treatment".CHEMICAL ENGINEERING JOURNAL 369(2019):845-853. |
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