Supercritical carbon dioxide/nitrogen/air extraction with multistage stripping enables selective recovery of rare earth elements from coal fly ashes
Yaguang Zhu, Guangcheng Wang, Young‐Shin Jun
Abstract
Using supercritical fluids, our novel process selectively extracts rare earth elements from coal fly ashes that were previously considered as waste and an environmental threat.
Topics & Concepts
Fly ashSupercritical carbon dioxideCoalStripping (fiber)Extraction (chemistry)Waste managementCarbon dioxideRare earthEnvironmental scienceSupercritical fluidSupercritical fluid extractionNitrogenClean coalChemistryEnvironmental chemistryMaterials scienceMineralogyChromatographyEngineeringOrganic chemistryComposite materialCoal and Its By-productsGeochemistry and Elemental AnalysisExtraction and Separation Processes