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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 8    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 8,August 2012
The Effect of Different Electrodes for the Electrogenerative Recovery of Cobalt
Full Text(PDF, )  PP.135-140  
Author(s)
Soh Wen Min, Afidah Abd Rahim, Norita Mohamed
KEYWORDS
—cobalt, electrogeneratively, spontaneous chemical reaction, RVC, PG, percentage of removal
ABSTRACT
Cobalt was recovered electrogeneratively by using a batch cell. In this system, a spontaneous chemical reaction occurred where cobalt is reduced at the cathode and zinc is oxidized to produce a free flow of electrical energy without any external power supply. The performances of reticulated vitreous carbon (RVC) and porous graphite (PG) as cathodes were evaluated based on the time and percentage of removal in an electrogenerative cell. Cyclic voltammetry and polarization studies were conducted to study the characteristics of these cathodes for cobalt deposition. RVC performed better than PG for cobalt recovery as 99.9% of recovery was achieved in 120 minutes whereas for PG it was 80.8%. Based on the cyclic voltammograms, the cobalt deposited on RVC and PG underwent an oxidation process to form cobalt oxides. 
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