Ion-Exchange Separation of Rare Earth Elements and Aluminium during Recycling the Spent Fluid Cracking Catalysts

Ion-Exchange Separation of Rare Earth Elements and Aluminium during Recycling the Spent Fluid Cracking Catalysts Научная публикация

Журнал

Chemistry for Sustainable Development
ISSN: 1817-1818

Вых. Данные

Год: 2024, Том: 32, Номер: 6, Страницы: 742-749 Страниц : 8 DOI: 10.15372/CSD2024609

Авторы

Puzhel A.O. ¹ , Borisov V.A. ² , Trenikhin M.V. ²

Организации

1	Dostoevsky Omsk State University, Оmsk, Russia
2	Omsk State Technical University, Оmsk, Russia

The possibility of selective ion-exchange separation of rare earth elements (REE), in particular La3+, from weakly acidic solutions containing an excess of Al3+ and Fe3+ ions has been demonstrated. The sorption of REEs and Al3+ was conducted under static and dynamic conditions using the chelating ampholytic resin Purolite S-930 in the Na-form. Selective REE desorption was performed by washing the column with the aqueous solution of EDTA, while Al3+ ions were retained in the column. The conditions for La3+ ion extraction were optimized, and the mechanism of their sorption was investigated. Experiments confirmed effective lanthanum extraction at the optimal pH 4.0 and a temperature of 25 °C. An increase in temperature to 65 °C reduces the sorption equilibrium time from 5 to 3 hours at an initial lanthanum concentration of 2.4 mg/L. The effective activation energy of the process was calculated to be 36.9 kJ/mol, and the maximum sorption capacity was determined as 322 mg/g. The influence of EDTA concentration on the efficiency of La3+ ion desorption in the presence of Al3+ was demonstrated. The developed methodology was applied for the sorption purification of REE-containing technological solution obtained during complex fluoride processing of the spent oil-cracking catalysts. Laboratory-scale sorption purification of this solution yielded a sufficiently pure concentrate (with the total REE oxide content at 85 wt%). Selective desorption from the iminodiacetate ampholyte allows a 30-fold REE concentrating from the technological solution, with losses not higher than 20 %.

Puzhel A.O. , Borisov V.A. , Trenikhin M.V.
Ion-Exchange Separation of Rare Earth Elements and Aluminium during Recycling the Spent Fluid Cracking Catalysts
Chemistry for Sustainable Development. 2024. V.32. N6. P.742-749. DOI: 10.15372/CSD2024609 WOS РИНЦ OpenAlex

Пужель А.О. , Борисов В.А. , Тренихин М.В. М.В.
Ионообменное разделение редкоземельных элементов и алюминия в ходе переработки отработанных катализаторов крекинга
Химия в интересах устойчивого развития. 2024. Т.32. №6. С.765-772. DOI: 10.15372/khur2024609 РИНЦ CAPlus OpenAlex

Поступила в редакцию:	25 июл. 2024 г.
Принята к публикации:	30 авг. 2024 г.
Опубликована online:	12 февр. 2025 г.

Web of science:	WOS:001420269300001
РИНЦ:	80313966
OpenAlex:	W4407634588