DOI: 10.1016/j.watres.2018.10.046
Scopus记录号: 2-s2.0-85055186763
论文题名: A new standard metric describing the adsorption capacity of carbon electrode used in membrane capacitive deionization
作者: Yoon D.-J. ; Choi J.-H.
刊名: Water Research
ISSN: 431354
出版年: 2019
卷: 148 起始页码: 126
结束页码: 132
语种: 英语
英文关键词: Charge efficiency
; Electrode reaction
; Maximum allowable charge
; Membrane capacitive deionization
; Salt adsorption capacity
Scopus关键词: Adsorption
; Carbon
; Efficiency
; Equivalent circuits
; Adsorption capacities
; Charge efficiency
; Electrode reactions
; Maximum allowable charge
; Membrane capacitive deionization
; Electrodes
; carbon
; sodium chloride
; adsorption
; carbon
; desalination
; electrical power
; electrochemistry
; electrode
; ionization
; salinity
; Article
; cell component
; cell membrane potential
; desalination
; feasibility study
; ionization
; membrane capacitive deionization
; metric system
英文摘要: A new standard metric has been developed to express the actual adsorption capacity of the carbon electrode in consideration of the electrode reactions. The adsorption experiments were carried out by changing the cell potentials (0.6–1.6 V) in the MCDI unit cell. The point at which the electrode reactions occur was determined from the change in instantaneous charge efficiency during the adsorption process. Then, the total charge supplied to the carbon electrode at this point was defined as the maximum allowable charge (MAC). The MAC values were constant at 59 C/g irrespective of cell potentials. In addition, the salt adsorption capacity (SACMAC) and the charge efficiency at MAC were approximately 16 mg/g and 91%, respectively, regardless of the cell potentials. Furthermore, the equivalent circuit analysis for the MCDI cell revealed that Faradaic reactions rarely occur at the MAC. The MAC is the maximum charge that can be supplied to the carbon electrode without electrode reactions. It is also unaffected by the cell components and operating conditions of the MCDI cell. Therefore, the MAC is expected to be a useful metric to objectively express the actual adsorption capacity of the carbon electrode. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122221
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Chemical Engineering, Kongju National University, 1224-23 Cheonan-daero, Seobuk-gu, Cheonan, Chungnam 31080, South Korea
Recommended Citation:
Yoon D.-J.,Choi J.-H.. A new standard metric describing the adsorption capacity of carbon electrode used in membrane capacitive deionization[J]. Water Research,2019-01-01,148