Enhancing Rare Earth Element Recovery from Coal Ash Using High-Voltage Electrical Pulses and Citric Acid Leaching

• Published in: Minerals (Basel) Vol. 14; no. 7; p. 693
• Main Authors: Ketegenov, Tlek, Kamunur, Kaster, Mussapyrova, Lyazzat, Batkal, Aisulu, Nadirov, Rashid
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.07.2024
• Subjects: Acid leaching; Ash; Cavitation; Cerium; Chemical reactions; Citric acid; citric acid leaching; Coal; coal ash; Coal-fired power plants; Controlled conditions; Efficiency; Fly ash; High voltages; high-voltage electrical pulses; Hydrochloric acid; Kinetics; Lanthanum; Leaching; leaching kinetics; Minerals; Optimization; Rare earth elements; Recovery; Sulfuric acid; Temperature; Voltage; Yttrium; Kazakhstan; Russia

The study investigates the application of high-voltage electrical pulses (HVEP) as a pretreatment to enhance the leaching efficiency of rare earth elements (REE) from coal ash (CA) produced from the combustion of Ekibastuz Basin coal in Almaty, Kazakhstan. HVEP treatment was applied to the finest (&...