| CDI二维浓度传质模型的建立以及实验验证 |
| |
| 引用本文： | 黄陆月,刘畅,许勇毅,邢浩若,王峰,马双忱.CDI二维浓度传质模型的建立以及实验验证[J].化工学报,2022,73(7):2933-2943. |
| |
| 作者姓名： | 黄陆月 刘畅 许勇毅 邢浩若 王峰 马双忱 |
| |
| 作者单位： | 1.华北电力大学环境科学与工程系，河北 保定 071003;2.中电华创电力技术研究有限公司，江苏 苏州 215123 |
| |
| 基金项目： | 国家重点研发计划项目(2018YF0604305-1) |
| |
| 摘 要： | 电容去离子技术(CDI)作为一种新兴的水处理脱盐技术，因其具有诸多优异性能而受到广泛关注。厘清CDI的传质机制是理论研究的焦点。通过对已有经验模型的分析，从沿流向方向和垂直流向方向两个方面，考虑了电场迁移以及传质扩散等因素，提出了一种新的CDI二维浓度传质模型，对CDI在除盐过程中的离子扩散及浓度分布规律进行模拟探究，根据实际实验结果对该模型进行实验验证及参数修正。结果表明，该二维模型可以较好地模拟CDI除盐过程。将该二维模型利用COMSOL软件进行模拟，观测CDI在除盐过程中的内部浓度变化。并针对存在问题提出合理化建议，为CDI技术的未来发展提供理论支撑。
|
| 关 键 词： | 电容去离子 电吸附 二维模型 脱盐 实验验证 |
| 收稿时间： | 2022-01-07 |
Development of CDI two-dimensional concentration mass transfer model and experimental validation |
| |
| Luyue HUANG,Chang LIU,Yongyi XU,Haoruo XING,Feng WANG,Shuangchen MA.Development of CDI two-dimensional concentration mass transfer model and experimental validation[J].Journal of Chemical Industry and Engineering(China),2022,73(7):2933-2943. |
| |
| Authors: | Luyue HUANG Chang LIU Yongyi XU Haoruo XING Feng WANG Shuangchen MA |
| |
| Affiliation: | 1.Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, Hebei, China;2.China Power Hua Chuang Electricity Technology Research Company Ltd. , Suzhou 215123, Jiangsu, China |
| |
| Abstract: | Capacitive deionization (CDI) is an emerging technology for water treatment and desalination, which has received much attention because of its excellent performance. To this end, a new two-dimensional concentration transfer model of CDI was proposed in this paper by analyzing the existing empirical models, which considers the electric field migration and mass transfer diffusion from both along and vertical flow directions. The ion diffusion and concentration distribution of CDI in the process of desalination were simulated and explored. According to the actual experimental results, the model is verified experimentally and its parameters are corrected. The results show that the two-dimensional model can simulate the CDI desalination process well. This two-dimensional model was simulated using COMSOL software to observe the internal concentration changes of CDI during the desalination process. And rationalization suggestions are made for the existing problems to provide theoretical support for the future development of CDI technology. |
| |
| Keywords: | capacitive deionization electro-adsorption two-dimensional model desalination experimental validation |
|
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载全文 |
|
