Recovery of Nickel and Copper from Metal Finishing Hydroxide Sludge by Kinetic Acid Leaching | Zendy

R. Salhi | Zendy; M. Boudjouada | Zendy; S. Messikh | Zendy

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Recovery of Nickel and Copper from Metal Finishing Hydroxide Sludge by Kinetic Acid Leaching

Author(s) -

R. Salhi,

M. Boudjouada,

S. Messikh

Publication year - 2016

Publication title -

journal of new technology and materials

Language(s) - English

Resource type - Journals

ISSN - 2170-161X

DOI - 10.12816/0043935

Subject(s) - copper , nickel , leaching (pedology) , metallurgy , metal , hydroxide , kinetic energy , chemistry , materials science , nuclear chemistry , inorganic chemistry , environmental science , physics , quantum mechanics , soil science , soil water

Corresponding author: email: salhiram@yahoo.fr Received date: June 06, 2016; revised date: December 03, 2016; accepted date: December 11, 2016 Abstract: The aim of the present work was the recovery of nickel and copper from metal finishing hydroxide sludge by kinetic acid leaching. The study was divided into two main parts: First, a kinetic model of precipitate leaching with the presence of acid was developed and subjected to theoretical approach so as to determine optimal leaching conditions (pH and time). Next, the study was conducted experimentally on pure metals hydroxides and then on electroplating sludges. The leaching operation was performed at atmospheric pressure with constant stirring. pH and solubility versus time at different temperature values and different amounts of sludge were carried out. The resulting filtrate was found to contain more than 99% of nickel and copper.

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