Recovery of yttrium from fluorescent powder of cathode ray tube, CRT: Zn removal by sulphide precipitation

• Published in: Waste management (Elmsford) Vol. 33; no. 11; pp. 2364 - 2371
• Main Authors: Innocenzi, Valentina, De Michelis, Ida, Ferella, Francesco, Beolchini, Francesca, Kopacek, Bernd, Vegliò, Francesco
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.11.2013; Elsevier
• Subjects: Applied sciences; Cathode Ray Tube; CATHODE RAY TUBES; Cathode ray tubes (CRT); Chemical Precipitation; COPRECIPITATION; Electronic Waste; Exact sciences and technology; FLUORESCENCE; Fluorescent powder; HYDROGEN PEROXIDE; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; LEACHING; MATERIALS RECOVERY; Other wastes and particular components of wastes; OXALIC ACID; PH VALUE; Pollution; PURIFICATION; REGRESSION ANALYSIS; SODIUM SULFIDES; SOLUTIONS; Sulfides - chemistry; SULFURIC ACID; Waste Products - analysis; Wastes; WEEE; YTTRIUM; Yttrium - isolation & purification; YTTRIUM OXIDES; ZINC; Zinc - isolation & purification; Zinc removal; ZINC SULFIDES; Zinc removal; Cathode ray tubes (CRT); Fluorescent powder; Yttrium; WEEE; Hydrogen peroxide; Cathode tube; Lixiviation; Regression analysis; Recycling; Mathematical model; Factorial design; Coprecipitation; Zinc

•Treatment of fluorescent powder of CRT waste.•Factorial experimental designs to study acid leaching of fluorescent powder and the purification of leach liquors.•Recover of yttrium by precipitation using oxalic acid.•Suitable flowsheet to recover yttrium from fluorescent powder. This work is focused...