Recent developments and potential uses for carboxylic acid extractants—A review

摘要: Abstract The literature on the extraction of metals with carboxylic acids and mixtures other extractants since 1970 is reviewed. Both chemistry applications are discussed. latter restricted in comparison types liquid cation exchanger but they superior for: cobalt from ammoniacal media; direction reduction organic exchange for impurity removal (especially iron) acid media and, mixed amines, magnesium recovery brines. many complicated by co-existence several phase complexes. Little advance has been made understanding such systems. Slope analysis an insensitive technique application physico-chemical methods, particularly spectrophotometry, required interpretation results difficult. Possible uses affluent treatment, environmental aspects solvent loss