NDLI: Study of conducting medium in composite particle electrodes used for defluoridation by electro-adsorption

Content Provider	IEEE Xplore Digital Library
Author	Jia Xu Wenyan Liang
Copyright Year	2011
Description	Author affiliation: College of Environmental Science and Engineering, Beijing Forestry University, China (Jia Xu; Wenyan Liang)
Abstract	A composite particle electrode made of zirconium hydroxide and a conducting medium was studied in electro-adsorption to remove fluoride. The acetylene black (AB), carbon fiber (CF), graphite powder (GP), and expanded graphite (EG) were selected as conducting medium, and results showed that their percolation threshold were 20%, 40%, 35%, and 40%. If the weight percent of the 4 media was 10%, 30%, 35%, and 40%, the electrodes have similar conductivity and their specific capacitance were 3.68, 2.37, 2.65, and 2.11 F/g. SEM images revealed that the surface construction morphology of the 4 electrodes were all rough and porous, and they had similar specific surface area, pore diameter, and surface fractal dimension. When these 4 particle electrodes were used as anodes in a three dimensional reactor, the adsorption amounts reached 8.06, 2.72, 5.71, and 4.27 mg/g under the applied voltage of 4 V between counter electrodes. Compared with 0 V, the adsorption amounts had increased 43.4, 18.8, 41.3, and 44.7 %.
Starting Page	7859
Ending Page	7862
File Size	425508
Page Count	4
File Format	PDF
ISBN	9781424491728
e-ISBN	9781424491711
DOI	10.1109/RSETE.2011.5966260
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-24
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Surface morphology Carbon dioxide Defluoridation Surface roughness Carbon Conducting medium Electrodes Zirconium Adsorption Electro-adsorption Capacitance Zirconium hydroxide Composite electrodes
Content Type	Text
Resource Type	Article

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