R. Kümmel

Zur Abtrennung von Kupfer aus ammoniakalischer Lösung durch Flüssig-Flüssig-Extraktion und Flüssigmembranpermeation mit 1-Phenyl-3-methyl-4-stearoyl-pyrazol-5-on

Abstract (Separation of copper from ammoniacal solutions by liquid-liquid-extraction and liquid membrane technique with 1-phenyl-3-methyl-4-stearoylpyrazol-5-one.) The separation of copper with 1-phenyl-3-methyl-4-stearoyl-pyrazol-5-one by liquid-liquid extraction and liquid-membrane permeation is reported. The ligand is able to separate Cu(II) as CuL2 from alkaline and ammoniacal solutions, respectively. The influence of pH, concentration of ammonia, concentration of salts contained and of the carriers, respectively, composition of the membrane phase and the initial copper concentration are studied. The parameters of the extraction are given. Because of the comparatively small solubility of the copper complex, the industrial application of the ligand is useful only for diluted solutions.