Abstract
Abstract In this study, we have investigated solvent extraction of Ga and recovery of high pure Ga solution from MOCVD dust formanufacturing of LED chip. Effect of extractan, concentration of extractant were examined for choosing the more effectiveextractant and high pure Ga solution was fabricated by multi-stage extraction/stripping process. For extraction/separation of Gabased on the analysis of raw-material in previous study, 3 different extractants PC 99A, DP-8R, Cyanex 272 has been inves-tigated and the extraction efficiency of 1.5 M Cyanex 272 was 43.8%. It was conformed that extraction efficiency of Ga was83% in multi-stage extraction and 5N high purity Ga stripping solution without impurities also obtained.Key words : MOCVD dust, Ga purification, solvent extraction, Cyanex 272 · Received : June 25, 2015 · Revised : July 15, 2015 · Accepted : July 24, 2015Corresponding Author : Chan Gi Lee (E-mail : cglee@iae.re.kr)Advanced Materials & Processing Center, Institute for Advanced Engineering, 175-28, 51 Goan-ro, Baegam-myeon, Cheoin-gu,Youngin-si, Gyeonggi-do, 449-863, KoreaⓒThe Korean Institute of Resources Recycling. All rights reserved. This is an open-access article distributed under the termsof the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permitsunrestricted non-commercial use, distribution and reproduction in any medium, provided the original work is properly cited.
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