4.4 Article

Encapsulation of nano-sized iron(III)-titanium(IV) mixed oxide for the removal of Co(II), Cd(II) and Ni(II) ions using continuous-flow column: multicomponent solution

Journal

SEPARATION SCIENCE AND TECHNOLOGY
Volume 55, Issue 11, Pages 1932-1946

Publisher

TAYLOR & FRANCIS INC
DOI: 10.1080/01496395.2019.1617741

Keywords

Adsorption; column; encapsulation; multicomponent; nano-sized

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Encapsulation of nano-sized iron(III)-titanium(IV) mixed oxide was achieved using sodium alginate to produce encapsulated Fe-O-Ti beads for the removal of Co(II), Cd(II), and Ni(II) from multicomponent solution using fixed-bed column. The column performance was 57.6, 49.2, and 34.0% for Ni(II), Co(II), and Cd(II), respectively. The breakthrough curves were better described by Thomas model than Yoon-Nelson model. Regeneration of the ions-loaded adsorbent was performed at 0.1 mol/L HCl, at which the desorption percent was 88.8, 86.4, and 83.3% for Co(II), Ni(II), and Cd(II) respectively. Finally, the encapsulated Fe-O-Ti can be recommended for the removal of Co(II), Cd(II), and Ni(II) from multicomponent media.

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