ISSN: 2157-7048
+44-77-2385-9429
Vijayaram R
Kongu Engineering College,
Perundurai, Erode
India
Research Article
Studies on Metal (Cu and Sn) Extraction from the Discarded Printed Circuit Board by Using Inorganic Acids as Solvents
Author(s): Vijayaram R and Dr. Chandramohan KVijayaram R and Dr. Chandramohan K
This Project deals with the experimental results of the leaching of metal like Cu and Sn from Printed Circuit Boards (PCB) from obsolete electronic devices by means of leaching using different combinations of acidic mixtures followed by precipitation. Printed circuit boards were dismantled, cut into small pieces, and fed into a Ball mill. The powder obtained was leached by using the aqueous solutions H2SO4, H2SO4+HCl, HCl, and HCl+HNO3. The lowest values for the percentage of metal extraction were obtained with H2SO4 while the HCl+HNO3 mixture exhibited an extraction of Sn and Cu in a maximum percentage. Precipitates were obtained at different pH values by neutralizing the leach liquors using NaOH. The HCl+HNO3 leach system presented the highest recovery values from the powder feed as we.. View More»
DOI:
10.4172/2157-7048.1000148