Capacitive Deionization of NaCl and NaNO3 Solutions with Carbon Aerogel Electrodes
نویسندگان
چکیده
منابع مشابه
Water desalination using capacitive deionization with microporous carbon electrodes.
Capacitive deionization (CDI) is a water desalination technology in which salt ions are removed from brackish water by flowing through a spacer channel with porous electrodes on each side. Upon applying a voltage difference between the two electrodes, cations move to and are accumulated in electrostatic double layers inside the negatively charged cathode and the anions are removed by the positi...
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Carbon materials have the advantages of good electrical conductivity and excellent chemical stability, so many carbon materials have been introduced as electrodes for the capacitive deionization (CDI) process. Due to the low surface area compared to the other nanocarbonaceous materials, CNFs performance as electrode in the CDI units is comparatively low. This problem has been overcome by prepar...
متن کاملAttractive forces in microporous carbon electrodes for capacitive deionization
The recently developed modified Donnan (mD) model provides a simple and useful description of the electrical double layer in microporous carbon electrodes, suitable for incorporation in porous electrode theory. By postulating an attractive excess chemical potential for each ion in the micropores that is inversely proportional to the total ion concentration, we show that experimental data for ca...
متن کاملUsing Mesoporous Carbon Electrodes for Capacitive Deionization (CDI) of Salt and Brackish Water
Capacitive Deionization [2] (CDI [3]) is a water [4] purification process that offers promise in the deionization of salt and brackish water [4]. The process can create potable water [4] out of salt laden water [4] by using electric currents to separate the ions in the solution and attract them to cathode and anode plates. These plates act as filters, drawing salt and other ionized metals out o...
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Capacitive deionization (CDI) is a promising salt removal technology with high energy efficiency when applied to low molar concentration aqueous electrolytes. As an interfacial process, ion electrosorption during CDI operation is sensitive to the pore structure and the total pore volume of carbon electrodes limits the maximum salt adsorption capacity (SAC). Thus, activation of carbons as a wide...
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ژورنال
عنوان ژورنال: Journal of The Electrochemical Society
سال: 1996
ISSN: 0013-4651,1945-7111
DOI: 10.1149/1.1836402