Kumar, Vinay and Kumar, Manoj and Jha, Manis K and Lee, Jae-chun (2009) Extraction and separation of metals using LIX 84 AND D2EHPA diluted in kerosene from sulfate solution. Proceedings of EPD on Mineral, Metal and Materials Society . pp. 1089-1094.
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The disposal of large quantities of electronic scraps gene-rated world wide is causing not only environmental problem but also loss of resources. Therefore, R & D efforts have been made to develop a suitable process for extraction and separation of metals viz. copper, zinc, cadmium and nickel expected from the leaching of e-scraps using solvent extra-ction process.Different process parameters viz.pH, aqueous to organic ratio, kinetics of extraction, extraction isoth-erm to establish stage requirement for extraction in conti-nuous mode etc have been studied to optimise the condition for the separation of metals. The studies showed the selec-tive extraction of copper after iron precipitation from the sulfuric acid leach solution of e-wastes containing ~1.0 g/L Cu and minor impurities with 2-hydroxy-5-nonylace-tophenoneoxime (LIX 84) above pH 2.0 in single stage. A scheme for separation of cadmium, zinc and nickel has been proposed using di(2-ethylhexyl) phosphoric acid (D2EHPA) under controlled pH of the aqueous solution. The order of extraction was found to be Zn> Cd> Ni.
|Uncontrolled Keywords:||e-wastes, hydrometallurgical process, solvent extraction, copper|
|Divisions:||Metal Extraction and Forming|
|Deposited By:||INVALID USER|
|Deposited On:||06 Jun 2011 19:54|
|Last Modified:||03 Jan 2012 12:51|
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