Sathaiyan, N. and Adaikkalam, P. and Venkateswaran, K.V. (2002) Estimation of silver in the photographic fixer solution by voltammetric technique. Transactions of the SAEST, 37 (03). pp. 83-85.

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Spent photographic fixer solution, colour bleach-fixer solution (CBFS) etc are very good sources of silver. In view of escalating cost of silver metal and the compelling need for pollution abatement, it is essential to recover silver from the fixer solution. During the processing of films, 20-25% of silver is left in the black and white films. Whereas in the case of colour films essentially all silver is dissolved into the solution. Since, the silver concentration in these solution are very low (2-5 g/l) it is important to analyse the silver in the solution before and after recovery. Experiments were carried to analyse the silver contents of photographic solutions using cyclic voltammetric technique. Effect of silver concentrations as well as effect of sweep rates were found out in the quick estimation of silver in the photographic solutions. Compared with other methods, this voltammetric technique seems to give silver concentration of photographic solutions in short duration without affecting the nature of the solutions

Item Type: Article
Uncontrolled Keywords: Photographic fixer solution; Cathode potential; Cyclic voltammetry; Silver estimation
Subjects: Electrohydrometallurgy
Depositing User: ttbdu cecri
Date Deposited: 05 Apr 2012 10:28
Last Modified: 05 Apr 2012 10:28

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