Electrolytic recovery of silver from low concentrated silver cyanide spent plating solutions
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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Title |
Electrolytic recovery of silver from low
concentrated silver cyanide spent plating
solutions
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Creator |
Ramesh Bapu, G.N.K.
Eagammai, C. Jayakrishnan, S. |
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Subject |
Industrial Metal Finishing
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Description |
Cyanide silver solution containing 200 to 1000 mg L21 silver ions were used for recovery studies.
The nature of the silver deposit was studied using a Hull cell, and the current density range was
selected for electrolysis to recover silver. A batch electrochemical reactor, consisting of a planar
stainless steel cathode and platinum anode was used and silver was recovered at 0?04 to
0?2 A dm22. The effect of different initial silver concentrations on the electrochemical recovery of
the metal was investigated as a function of electrolysis duration at various current densities. The
cathode current efficiency and the energy consumption were determined for the solutions for
various experimental conditions. Surface morphology and structure of the silver deposit was also
studied using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results show
that irrespective of the initial silver concentration, higher current efficiency and lower energy
consumption can be achieved at a low current density. For a given current density, the energy
consumption to recover silver is lower from relatively concentrated than from dilute solutions.
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Publisher |
Maney Publishing
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Date |
2008
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Type |
Article
PeerReviewed |
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Format |
application/pdf
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Identifier |
http://cecri.csircentral.net/478/1/171-2008.pdf
Ramesh Bapu, G.N.K. and Eagammai, C. and Jayakrishnan, S. (2008) Electrolytic recovery of silver from low concentrated silver cyanide spent plating solutions. Transactions of the Institute of Metal Finishing, 86 (1). pp. 66-72. ISSN 0020-2967 |
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Relation |
http://cecri.csircentral.net/478/
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