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Extraction of Palladium from Acidic Chloride Media into Emulsion Liquid Membranes using LIX 984N-C<sup>®</sup>
Program of Petrochemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok, Thailand
Green Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok, Thailand
National Center of Excellence for Petroleum, Petrochemicals and Advanced Materials (NCE-PPAM), Bangkok, Thailand, Thailand
- 1 Program of Petrochemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok, Thailand
- 2 Green Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok, Thailand
- 3 National Center of Excellence for Petroleum, Petrochemicals and Advanced Materials (NCE-PPAM), Bangkok, Thailand, Thailand
International Journal of Nonferrous Metallurgy·Volume 01 (2012)·Pages 13–22·Published 26 July 2012·DOI10.4236/ijnm.2012.12003
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Abstract
The extraction of palladium from hydrochloric acid solutions into emulsion liquid membranes (ELMs) using LIX 984N-C as the extractant was investigated. The influential factors and the total capacities of palladium extraction were determined by a batch method. The behavior of palladium extraction by ELMs under the operational conditions-pH of the external feed phase, surfactant and extractant concentration, internal stripping phase concentration, treat ratio and agitation speed were reported. Using LIX 984N-C, palladium was effectively extracted from the external acidic chloride feed phase into the internal receiving phase of W/O emulsions. More than 92% of palladium could be extracted at a feed pH of 2 with 3% Span 80, 9% LIX 984N-C and 7M HCl at a stirring speed of 300 rpm.
KeywordsPalladium ExtractionLIX 984N-CEmulsion Liquid Membrane
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