Raju, T. and Chung, S.J. and Moon, I.S. (2009) Electrochemical recovery of silver from waste aqueous Ag(I)/Ag(II) redox mediator solution used in mediated electro oxidation process. Korean Jouurnal of Chemical Engineering, 26 (4). pp. 1053-1057.

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Abstract

The paper presents a process for the electrochemical recovery of silver(Ag) by electro deposition on the electrode surface from the waste solutions of Ag(I)/Ag(II) redox system in nitric acid medium used for the mediated electrochemical process. Electrochemical recovery was carried out in an undivided cell with DSA-O2 electrodes at room temperature condition. At an optimized current density of 12 A/dm2, 99% of Ag recovery efficiency was achieved with high yield and low energy consumption. Experimental runs were made in order to observe the performance of the Ag recovery process. The operating conditions like current density, temperature and Ag(I) concentration of the electrolyte, the acid concentrations, agitation rate and inter-electrode distance were optimized.

Item Type:	Article
Uncontrolled Keywords:	Electrochemical; Mediated Electro Oxidation; Electro Deposition; Recovery; Undivided Cell
Subjects:	Electroorganic
Divisions:	UNSPECIFIED
Depositing User:	TTBD CECRI
Date Deposited:	01 Apr 2012 17:34
Last Modified:	01 Apr 2012 17:34
URI:	http://cecri.csircentral.net/id/eprint/669

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