Optimal conditions for efficient flow-electrode capacitive deionization
文献类型：期刊论文
| 作者 | Tang, Kexin1,2,3; Yiacoumi, Sotira1; Li, Yuping2; Gabitto, Jorge4; Tsouris, Costas1,5 |
| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| 出版日期 | 2020-06-01 |
| 卷号 | 240页码:10 |
| ISSN号 | 1383-5866 |
| 关键词 | Flow-electrode Capacitive deionization Optimization FCDI modeling Activated carbon |
| DOI | 10.1016/j.seppur.2020.116626 |
| 英文摘要 | One of the current barriers to achieving fast and stable performance for flow-electrode capacitive deionization (FCDI) is determining optimal operating parameters. To date, however, no consensus has been reached for universal conditions for FCDI. Through experimental and modeling approaches in this study, we systematically evaluated the influence of applied potential (V = 1.2-2.4 V) and electrolyte concentration (C-0 = 0.05-0.5 M) on the FCDI and electrodialysis (ED) desalination processes. Evaluation indicators include the concentration decrease in the desalinated solution, salt removal rates, pH fluctuations, charge efficiency, and energy consumption. Results demonstrated that the dynamic curves of concentration decrease at 2.0 V nearly overlapped with the response at 1.6 V at certain electrolyte concentrations, while the salt removal rates at 0.2 M salt concentration were the best among all concentrations tested at a range of applied potential. It was thus concluded that the optimum conditions for FCDI operation are 1.6 V applied potential and 0.2 M initial salt concentration, under which faradaic reactions are not being triggered, and concentration polarization does not significantly affect ion transfer. Furthermore, a comparative study between FCDI and ED indicated that ED has a different dependence on the electrolyte concentration and applied potential, in which the desalination can be linearly enhanced with increasing potential but greatly limited at high concentrations. Due to the presence of carbon particles in FCDI, the enhanced charge/ion transfer is probably the main reason for the different desalination performance of FCDI and ED. The optimal operating parameters obtained in this work could be used as basic test conditions for further development of new carbon-based materials for FCDI. |
| WOS关键词 | ULTRAHIGH DESALINIZATION PERFORMANCE ; IMPROVED OPERATION VOLTAGE ; WATER DESALINATION ; SEAWATER DESALINATION ; MESOPOROUS CARBON ; ENERGY ; BRACKISH ; TECHNOLOGY ; TRANSPORT ; SYSTEMS |
| 资助项目 | US Department of Energy[DE-AC05-00OR22725] ; School of Civil and Environmental Engineering of the Georgia Institute of Technology ; National Natural Science Foundation of China (NSFC)[51425405] ; National Natural Science Foundation of China (NSFC)[21377130] ; China Scholarship Council (CSC)[201606250079] ; Laboratory Directed Research and Development Program of the Oak Ridge National Laboratory |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000517659500018 |
| 资助机构 | US Department of Energy ; School of Civil and Environmental Engineering of the Georgia Institute of Technology ; National Natural Science Foundation of China (NSFC) ; China Scholarship Council (CSC) ; Laboratory Directed Research and Development Program of the Oak Ridge National Laboratory |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/39578]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Li, Yuping; Tsouris, Costas |
| 作者单位 | 1.Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA 2.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Div Environm Technol & Engn, Beijing 100190, Peoples R China 3.Tianjin Univ, Natl Engn Res Ctr Distillat Technol, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China 4.Prairie View A&M Univ, Dept Chem Engn, Prairie View, TX 77446 USA 5.Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN 37831 USA |
| 推荐引用方式 GB/T 7714 | Tang, Kexin,Yiacoumi, Sotira,Li, Yuping,et al. Optimal conditions for efficient flow-electrode capacitive deionization[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2020,240:10. |
| APA | Tang, Kexin,Yiacoumi, Sotira,Li, Yuping,Gabitto, Jorge,&Tsouris, Costas.(2020).Optimal conditions for efficient flow-electrode capacitive deionization.SEPARATION AND PURIFICATION TECHNOLOGY,240,10. |
| MLA | Tang, Kexin,et al."Optimal conditions for efficient flow-electrode capacitive deionization".SEPARATION AND PURIFICATION TECHNOLOGY 240(2020):10. |
入库方式： OAI收割
来源：过程工程研究所
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