Selective Recovery of Aluminum and Silver from Electroplating Wastes

Raman, Abdul Aziz Abdul (2005) Selective Recovery of Aluminum and Silver from Electroplating Wastes. UNSPECIFIED.

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Abstract

<p><font face="Arial">In this study, sludge from an electroplating wastewater treatment facility was treated with acids to extract heavy and precious metals. Metals of interest in the study were Aluminium and Silver, which were relatively high in concentration in the sludge sample. Acids used in the study were Hydrochloric and Nitric acid. Experiments were conducted at various temperatures and acid concentrations. It was observed that maximum Aluminium was extracted using a mixture of Hydrochloric and Nitric Acid at a ratio of 3 to 1, known as the aqua regia phase. About 24% Aluminium, in the form of Aluminium Chloride aqueous solution was obtained at room temperature at these conditions. Maximum Silver, about 90%, in the form of Silver Nitrate aqueous solution was obtained when refluxed with Nitric acid at a temperature of 110&deg;C.</font></p>

Item Type: Other
Uncontrolled Keywords: Selective Recovery of Aluminum and Silver from Electroplating Wastes
Subjects: University Structure > Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: MR. ADNAN YAHYA
Date Deposited: 30 Apr 2008
Last Modified: 13 Jul 2015
URI: http://repository.um.edu.my/id/eprint/58328

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