A comparative study of electrosorption selectivity of ions by activated carbon electrodes in capacitive deionization

Tunghai University Institutional Repository > 工學院 > 環境科學與工程學系所 > 期刊論文 > Item 310901/23211

請使用永久網址來引用或連結此文件: http://140.128.103.80:8080/handle/310901/23211

題名:	A comparative study of electrosorption selectivity of ions by activated carbon electrodes in capacitive deionization
作者:	Hou, C.-H., Huang, C.-Y.
貢獻者:	Department of Environmental Science and Engineering, Tunghai University
關鍵詞:	Activated carbon electrode;Capacitive deionization;Cyclic voltammetry;Desalination;Electrosorption
日期:	2013
上傳時間:	2013-06-11T09:03:47Z (UTC)
摘要:	This study has been focused on an experimental investigation of the electrosorption selectivity for alkali- and alkaline-earth cations in activated carbon-based capacitive deionization process. Cyclic voltammetry experiments showed that a large proportion of micropores in activated carbon electrodes were associated with electrical double-layer overlapping, and the specific capacitance of cations increased with the decrease of hydrated radius. A series of electrosorption experiments were conducted to identify the preferential electrosorption in multi-ionic solutions. The electrosorption selectivity of cations can be determined by the ionic charge, hydrated radius, and initial molar concentration. The activated carbon electrodes presented greater selectivity of smaller ions over larger ions due to size-affinity, while divalent cations possessing higher valence to screen the surface charge were more effectively removed than monovalent cations. The increase of initial molar concentration resulted in the increase of electrosorption capacity. Moreover, the ion selectivity can be further enhanced by increasing the applied voltage. The results are relevant to water desalination and softening in electrosorption. ? 2013 Elsevier B.V.
關聯:	Desalination 314 , pp. 124-129
顯示於類別:	[環境科學與工程學系所] 期刊論文

文件中的檔案:

檔案	大小	格式	瀏覽次數
index.html	0Kb	HTML	451	檢視/開啟

在THUIR中所有的資料項目都受到原著作權保護.

資料載入中.....