Perrhenate extraction studies by Cyphos 101-IL; screening for implementation in technetium removal

Autor:	Sarah E. Pepper, Mark D. Ogden
Rok vydání:	2013
Předmět:	Perrhenate Ion exchange Kinetics Extraction (chemistry) Inorganic chemistry chemistry.chemical_element Filtration and Separation Rhenium Chloride Toluene Analytical Chemistry chemistry.chemical_compound chemistry Ionic liquid medicine Nuclear chemistry medicine.drug
Zdroj:	Separation and Purification Technology. 118:847-852
ISSN:	1383-5866
DOI:	10.1016/j.seppur.2013.08.029
Popis:	The solvent extraction of rhenium (VII) from chloride solutions by Cyphos 101-IL in toluene has been studied. Distribution values for the extraction of perrhenate are extremely high leading to almost quantitative extraction. From slope analysis, an anion exchange extraction mechanism is proposed, with formation of a ReO 4 - association with one Cyphos IL-101 cation. The extraction kinetics are fast, with complete equilibration occurring within 60 s. Under identical conditions, distribution coefficients for Cyphos 101-IL are greater than for Aliquat-336. Extraction of the perrhenate anion does not seem to be negatively impacted by common environmental contaminants including iron, sulphate and nitrate at the pH values tested.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9ea7e1b739b28827f4c77568263bf072 https://doi.org/10.1016/j.seppur.2013.08.029 Zobrazit plný text záznamu Full Text from ScienceDirect