Methods for improving solvent properties

In hydrometallurgical processes, the separation of nickel and cobalt is challenging. Cyanex272 dialkyl phosphinic acid is generally used to separatet hese elements. The most effective separation requires that the reaction mixture be as pure as possible from various interferences such as carboxylic ac...

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Main Author: Hernberg, Tero
Other Authors: Matemaattis-luonnontieteellinen tiedekunta, Faculty of Sciences, Kemian laitos, Department of Chemistry, Jyväskylän yliopisto, University of Jyväskylä
Format: Master's thesis
Language:eng
Published: 2019
Subjects:
Online Access: https://jyx.jyu.fi/handle/123456789/65794
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author Hernberg, Tero
author2 Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Kemian laitos Department of Chemistry Jyväskylän yliopisto University of Jyväskylä
author_facet Hernberg, Tero Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Kemian laitos Department of Chemistry Jyväskylän yliopisto University of Jyväskylä Hernberg, Tero Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Kemian laitos Department of Chemistry Jyväskylän yliopisto University of Jyväskylä
author_sort Hernberg, Tero
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description In hydrometallurgical processes, the separation of nickel and cobalt is challenging. Cyanex272 dialkyl phosphinic acid is generally used to separatet hese elements. The most effective separation requires that the reaction mixture be as pure as possible from various interferences such as carboxylic acids. This thesis investigates various possibilities for removing carboxylic acids from the extraction mixture. Possibility of utilizing different pH isotherms and different water solubilities of carboxylic acids and Cyanex 272 for separation was investigated. Normal phase chromatography was attempted with one minute fractioning and finally molecular catcher was tested. Separation of extractants in these experiments, with these parameters failed.Possibility of utilizing different pH isotherms and different water solubilities of carboxylic acids and Cyanex 272 for separation was investigated. Normal phasechromatographywasattemptedwithoneminutefractioningandfinally molecular catcher was tested. Separation of extractants in these experiments, with these parameters failed
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spellingShingle Hernberg, Tero Methods for improving solvent properties molecular catcher SX solvent extraction separation liquid-liquid extraction LLE Epäorgaaninen ja analyyttinen kemia Inorganic and Analytical Chemistry 4031 kromatografia liuottimet liukoisuus uutto chromatography solvents solubility extraction (chemistry)
title Methods for improving solvent properties
title_full Methods for improving solvent properties
title_fullStr Methods for improving solvent properties Methods for improving solvent properties
title_full_unstemmed Methods for improving solvent properties Methods for improving solvent properties
title_short Methods for improving solvent properties
title_sort methods for improving solvent properties
title_txtP Methods for improving solvent properties
topic molecular catcher SX solvent extraction separation liquid-liquid extraction LLE Epäorgaaninen ja analyyttinen kemia Inorganic and Analytical Chemistry 4031 kromatografia liuottimet liukoisuus uutto chromatography solvents solubility extraction (chemistry)
topic_facet 4031 Epäorgaaninen ja analyyttinen kemia Inorganic and Analytical Chemistry LLE SX chromatography extraction (chemistry) kromatografia liquid-liquid extraction liukoisuus liuottimet molecular catcher separation solubility solvent extraction solvents uutto
url https://jyx.jyu.fi/handle/123456789/65794 http://www.urn.fi/URN:NBN:fi:jyu-201910094368
work_keys_str_mv AT hernbergtero methodsforimprovingsolventproperties