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REE behavior and sorption on weak acid resins from buffered media
journal contribution
posted on 2018-03-25, 00:00 authored by J P Bezzina, M D Ogden, Ellen MoonEllen Moon, K L SoldenhoffRare Earth Elements (REEs) are of great importance to modern day societies. Although abundant, concentration of REE minerals in ores are generally quite low, with high concentration of impurities. To counteract this, selective extraction processes must be undertaken. Selective adsorption of REE from buffered media solutions on Purolite S910 and Amberlite IRC86 weak acid resins has been studied. Batch experiments have been carried out on solutions containing a selection of REEs, Y 3+ , Fe 3+ and Al 3+ in unbuffered media, malic acid, formic acid, acetic acid, alanine and lactic acid to determine the best extracting media. Isotherm behavior and extraction kinetics of IRC86 were determined for acetic acid media, at the most effective pH that was determined to be 4.38. The isotherms were conducted for La 3+ , Sm 3+ , Er 3+ and Y 3+ determining extraction maxima of 0.29, 0.34, 0.49 and 0.60 mmol L −1 , respectively, with adsorption energies increasing with the same trend. Kinetic experiments determined that mid REEs were the fastest adsorption, with light REEs and heavy REEs displaying similar half-lives and Y 3+ measuring the smallest half-life out of the studied ions.
History
Journal
Journal of Industrial and Engineering ChemistryVolume
59Pagination
440 - 455Publisher
Elsevier BVLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
1226-086XeISSN
2234-5957Language
engPublication classification
C Journal article; C1.1 Refereed article in a scholarly journalCopyright notice
2017, Korean Society of Industrial and Engineering ChemistryUsage metrics
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No categories selectedKeywords
Rare Earthsweak acidion exchange resinmass transferextractionScience & TechnologyPhysical SciencesTechnologyChemistry, MultidisciplinaryEngineering, ChemicalChemistryEngineeringRARE-EARTH-ELEMENTSADSORPTION BEHAVIORLANTHANIDE SORPTIONEXTRACTION BEHAVIORAQUEOUS-SOLUTIOND113-III RESINMETAL-IONSSEPARATIONMECHANISMPRODUCTS
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