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Process of Salicylic Acid-Type Composite for Rare Earth Ions

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Abstract:

The chelation adsorption behavior of a salicylic acid-type composite ASA-PGMA/SiO2 for rare earth ions of the rare earth ore mud leaching solution in Mianning was studied in the present work. The effect of the reaction temperature and medium pH on adsorption properties of the ASA-PGMA/SiO2 particle was examined. The concentrations of REEs were determined by ICP-MS. The results showed that the ASA-PGMA/SiO2 possessed strong chelation adsorption ability for rare earth ions. The reaction temperature was 50°C, the adsorption properties of the composite were the best and the adsorption rate of rare earth ions reached above 90%. In the pH range where the hydrolysis of rare earth ions was inhibited, an increase in the pH value of the medium strengthened the chelation adsorption ability of the ASA-PGMA/SiO2 particle for rare earth ions. The rare earth ions desorption from the ASA-PGMA/SiO2 particle is effective when using 0.2mol/L of hydrochloric acid solution as the eluent.

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Periodical:

Materials Science Forum (Volume 814)

Pages:

333-337

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.814.333

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Online since:

March 2015

Authors:

Yu Yu Yao, Jing Liu, Yong Qiang Wu, Min Min Zheng, Chun Mei Tang

Keywords:

Chelation Adsorption, Rare Earth Ions, Rare Earth Ore Mud, Salicylic Acid-Type Composite

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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