Selective Leaching and Recovery of Er, Gd, Sn, and In from Liquid Crystal Display Screen Waste by Sono-Leaching Assisted by Magnetic Separation
Astrid D. Toache-Pérez, G.T. Lapidus, A.M. Bolarín-Miró, F. Sánchez-De Jesús
Abstract
, respectively, of which 93, 97, 72, and 99% were selectively recovered from the waste material by this method at pH 3 after 2 h of leaching. The proposed method emerges as an easy and selective process for leaching Er from LCD screen wastes and concentrating In, Sn, and Gd in a separable magnetic solid.
Topics & Concepts
Leaching (pedology)PyrophosphateMagnetic separationHydrogen peroxideAqueous solutionMaterials scienceChemistryLiquid-crystal displayNuclear chemistryMetallurgyOrganic chemistrySoil scienceSoil waterOptoelectronicsEnvironmental scienceEnzymeExtraction and Separation ProcessesRecycling and Waste Management TechniquesGeochemistry and Elemental Analysis