Citation:
Bouhidel K-E, Salhi R. Selective recovery of metal values from electroplating sludges: a numerical and modeling approach. Energy and Electrochemical Processing for a Cleaner Environment. 1998;97 (28) :323-329.
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Abstract:
Calculations and computations are applied to find the optimal conditionts (pH, [NH3], ...) of a selective recovery of metal values from the electroplating sludges.
This study compares a classical and approximate method, based on the superposition of solubility-pH-complex diagrams, and our rigorous approach, The studied example is the selective recovery of Ni++ and Cu++ from their hydroxide sludges by an ammoniacal leaching.
We introduce also a direct relation between the solubility and the total concentration of NH3, [NH3]T