Materials, Journal Year: 2025, Volume and Issue: 18(4), P. 819 - 819
Published: Feb. 13, 2025
Tin, although not considered a critical material in all world regions, is key for modern technologies. The projected scarcity of tin the coming decades emphasizes need efficient recycling methods to maintain uninterrupted supply chains. This review article focuses on recovery from low-grade secondary sources, specifically obsolete printed circuit boards (PCBs) and liquid crystal displays (LCDs). In both types waste, occurs various concentrations different chemical forms-a few percent as metal or alloy PCBs several hundred ppm tin(IV) oxide LCDs. presents pretreatment preconcentrate enhance subsequent leaching. It discusses only conventional acid alkaline leaching techniques but also use complexing agents challenges associated with bioleaching. Due dilution resulting leachates, advanced ion separation preconcentration before final product are shown. Solvometallurgical employing deep eutectic solvents ionic liquids, discussed; promising, they still remain under development.
Language: Английский