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Extraction of zinc from ammoniacal/ammonium sulphate solutions by LIX 54
Author(s) -
Alguacil Francisco José,
Cobo Antonio
Publication year - 1998
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199802)71:2<162::aid-jctb800>3.0.co;2-f
Subject(s) - zinc , chemistry , extraction (chemistry) , stripping (fiber) , ammonium , aqueous solution , inorganic chemistry , metal , nuclear chemistry , hydrometallurgy , chromatography , organic chemistry , sulfuric acid , materials science , composite material
The extraction of zinc from ammoniacal/ammonium sulphate aqueous media using LIX 54 has been studied. The metal extraction rate has been examined and also the effect of temperature on the extraction of zinc (Δ H ° = −8·8 kJ mol −1 ). The effect of the aqueous pH, and therefore zinc ammine complex formation, on the extraction of zinc was studied. Stripping of the metal from loaded organic phases was carried out at various rates, temperatures (Δ H ° = 3·2 kJ mol −1 ) and sulphuric acid concentrations. The results obtained were compared with others obtained from the literature wherein different extractants were used. © 1998 SCI.