IJSER Home >> Journal >> IJSER
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  
Soh Wen Min, Afidah Abd Rahim, Norita Mohamed
—cobalt, electrogeneratively, spontaneous chemical reaction, RVC, PG, percentage of removal
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. 
[1] C.Y. Yap and N. Mohamed, “Electrogenertive Processes for Environmental Application,” Clean-Soil Air Water,vol. 36, no. 5-6, pp. 443-452, Apr. 2008.

[2] C.Y. Yap and N. Mohamed, “An Electrogenerative Process for The Recovery of Gold from Cyanide Solutions,” Chemosphere, vol. 67, no. 8, pp. 1502-1510, Apr. 2007.

[3] Y.P. Hor and N. Mohamed, “Removal and Recovery of Copper via A Galvanic Cementation System Part I: Single-pass Reactor,” J. Appl. Electrochem., vol. 33, no. 3-4, pp.279-285, 2003.

[4] E.J. Podlaha and J.M. Fenton, “Characterization ofA Flow-by RVC Electrode Reactor for The Removal of Heavy Metals from Dilute Solutions,” J. Appl. Electrochem., vol. 25,no. 4, pp.299-306, 1995.

[5] D. Pletcher, I. Whyte, F.C. Walsh, and J.P. Millington, “Reticulated Vitreous Carbon Cathodes for Metal Ion Removal from Process Streams Part II: Removal of Copper(II) from Acid Sulphate Media,” J. Appl. Electrochem., vol. 21,no. 8, pp.667-671, 1991.

[6] P. Marco, S. Carlo,and C. Giacomo, “Electrochemical Remediation of Copper (II) from an Industrial Effluent Part II: Three-dimensional Foam Electrodes, “ Resour. Conserv. Recy.,vol. 27,no. 4, pp.299-307, Oct. 1999.

[7] E. M. Garcia, J.S. Santos, E.C. Pereira,and M.B.J.G. Freitas,“Electrodeposition of Cobalt from Spent Li-ion Battery Cathodes by The Electrochemistry Quartz Crystal Microbalance Technique,” J. Power Sources, vol. 185,no. 1, pp. 549-553, 2008.

[8] A.B. Soto, E.M. Arce, M. Palomar-Pardave,and I. Gonzalez, “Electrochemical Nucleation of Cobalt onto Glassy. Carbon Electrode from Ammonium Chloride,” Electrochim. Acta,vol. 41, no. 16, pp. 2647-2655,1996.

[9] C.Q. Cui, S.P. Jiang, and A.C.C. Tseung, “Electrodeposition of Cobalt from Aqueous Chloride Solutions,” J. Electrochem. Soc., vol. 137, no. 11, pp. 3418- 3423, Nov. 1990.

[10] L.H. Mendoza-Huizar, J. Robles, and M. Palomar-Pardave, “Nucleation and Growth of Cobalt onto Different Substrates: Part II. The Upd-opd Transition onto A Gold Electrode,”J. Elecctroanal. Chem., vol. 545, pp. 39-45, Mar. 2003

[11]J.M. Friendrich, C. Ponce-de-Leon, G.W. Read, and F.C. Walsh, “Reticulated Vitreous Carbon as An Electrode Material,” J. Electroanal. Chem., vol. 561, pp. 203-217, Jan. 2004.

[12]W.X. Tan and N. Mohamed, “Electrogenerative Removal of Cobalt from Sulphate Medium Using a Batch Reactor,” Clean-Soil Air Water, vol. 39,no. 5, pp. 460-466, May. 2011.

[13] W.X. Tan, M.A. Hasnat, N.H.M. Ramalan, W.M. Soh, and N. Mohamed, “Influence of Flow Rates on The Electrogenerative Co2+ Recovery at A Reticulated Vitreous Carbon Cathode,” Chem. Eng. J., vol. 189-190, pp. 182- 187, May. 2012.

[14] E.M. Garcia, H.A. Tarôco, T. Matencio, R.Z. Domingues, J.A.F. Santos, and M.B.J.G. Freitas, “Electrochemical Recycling of Cobalt from Spent Cathodes of Lithium–ion Batteries: Its Application as Coating on SOFC Interconnects,” J. Appl. Electrochem., vol. 41, no. 11, pp. 1373-1379, 2011.

Untitled Page