Removal of Cadmium Ions from Aqueous Solution by Nanostructured Carbonated Fluorapatite Bearing Siliceous Phosphorite

He Bin Shi; Yu Liu; Hong Zhong; Xing Tian; Ming Hang Liao

doi:10.4028/www.scientific.net/AMR.712-715.482

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 712-715Removal of Cadmium Ions from Aqueous Solution by...

Removal of Cadmium Ions from Aqueous Solution by Nanostructured Carbonated Fluorapatite Bearing Siliceous Phosphorite

Abstract:

A middle grade siliceous phosphorite from Yunnan province was selected to treat Cd²⁺ bearing aqueous solutions. The siliceous phosphorite was tested by X-ray fluorescence spectrometer, X-ray diffraction, infrared spectrometer and scanning electron microscopy. The results present that the valuable mineral is nanostructured carbonated fluorapatite and the major gangue mineral is quartz. The amount of Cd²⁺ sorbed by the siliceous phosphorite tends to increase with the increase of initial pH or the initial Cd²⁺ concentration of the simulated waste water. The reaction process of Cd²⁺ removal from aqueous solutions is highly fitted with the pseudo-second order kinetic model. The results indicate that nanostructured carbonated fluorapatite bearing siliceous phosphorite can effectively immobilize aqueous Cd²⁺.

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Periodical:

Advanced Materials Research (Volumes 712-715)

Pages:

482-486

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.712-715.482

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Online since:

June 2013

Authors:

He Bin Shi, Yu Liu, Hong Zhong, Xing Tian, Ming Hang Liao

Keywords:

Aqueous Cadmium Ions, Nanostructured Natural Apatite, Pseudo-Second Order Kinetics

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