Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2012

Идентификатор DOI: 10.1016/j.hydromet.2012.02.014

Ключевые слова: Platinum, Rhodium, Sorption, Anion exchangers, Sulfate-chloride solutions, Basic parameters, Chloride solutions, Distribution coefficient, Initial concentration, Ion exchange capacity, Kinetic properties, Macroporous, Molar ratio, Separation factors, Sorption ability, Sulfate-chloride, Ion exchange, Ion exchange resins, Recovery, Rhodium compounds, Sulfur compounds, Sulfuric acid, Chlorine compounds

Аннотация: The present work is devoted to simultaneous ion exchange recovery of platinum(II, IV) and rhodium(III) from sulfate-chloride solutions, freshly prepared and stored over 3 months, on commercial macroporous anion exchangers with different chemical structures. The sorption was carried out from solutions with 2.0; 0.1 and 0.01 mol/L HCl and H2SO4. The initial concentrations of platinum and rhodium in contacting solutions were 0.05-5.0 mmol/L. Sorption and kinetic properties of selected anion exchangers were investigated and the basic parameters of ion exchange capacity, recovery, distribution coefficients, separation factors, process rate, diffusion coefficients and half-exchange times were calculated. It was shown that the anion exchangers possess high sorption ability towards platinum and rhodium during their recovery from freshly prepared and stored sulfate-chloride solutions. The optimal molar ratio of hydrochloric and sulfuric acids was determined as 1:1. It was shown that freshly prepared sulfate-chloride systems have the same efficiency during simultaneous Pt/Rh recovery as chloride solutions. In case of stored systems, the sulfate-chloride solutions compare favorably with chloride ones. (C) 2012 Elsevier B.V. All rights reserved.

Журнал: HYDROMETALLURGY

Выпуск журнала: Vol. 117

Номера страниц: 101-107

ISSN журнала: 0304386X

Место издания: AMSTERDAM

Издатель: ELSEVIER SCIENCE BV

• Kononova O.N. (Siberian Fed Univ, Dept Chem, Inst Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia)
• Melnikov A.M. (Siberian Fed Univ, Dept Chem, Inst Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia)
• Borisova T.V. (Siberian Fed Univ, Dept Chem, Inst Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia)

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