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Development of hydrometallurgical process for indium recovery from waste liquid crystal display using Cyphos IL 101

Transactions of Nonferrous Metals Society of China 2020年第9期30卷 2556-2567页

作者： Sumitra NAYAK Niharbala DEVI Department of Chemistry Institute of Technical Education and ResearchSiksha‘O’Anusandhan(Deemed to be University)Bhubaneswar 751030India Biofuels and Bioprocessing Research Center Institute of Technical Education and ResearchSiksha‘O’Anusandhan(Deemed to be University)Bhubaneswar 751030India

The main goal of this study was to recover indium from the waste liquid crystal display(LCD)*** this context,an ionic liquid Cyphos IL 101 was *** extraction parameters such as equilibration period,acid concentration,chloride ion concentration,hydrogen ion concentration were examined on the extraction efficiency of Cyphos IL 101 towards In(III).Quantitative extraction of indium was found at 2.0 mol/L HCl using 0.005 mol/L Cyphos IL 101 and quantitative stripping with 1.0 mol/L ***’s method was used to determine the extracted species and R3R'PInCl4(R=C6H13;R′=C14H29)was *** on the observations on multi-metal studies,Cyphos IL 101 was further employed for the removal of indium,tin and copper from the leach liquors of waste *** conditions were generated for the recovery of indium from waste ***−Thiele diagram analysis,counter-current extraction and selective stripping were carried out to separate the metal ions,i.e.,indium,tin and *** stages at O/A ratio of 1:3 were required for complete removal of tin from the feed and selective stripping of In and Sn was achieved using 0.1 mol/L H2SO4.A scheme for separating indium from the waste LCDs was proposed.

关键词： indium extraction separation Cyphos IL 101 liquid crystal display panel

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