EDTA-functionalized KCC-1 and KIT-6 mesoporous silicas for Nd3+ ion recovery from aqueous solutions

Ethylenediaminetetraacetic acid (EDTA)-functionalized KIT-6 and KCC-1 mesoporous silicas were prepared via post-synthesis grafting and examined for their ability to promote the recovery of rare earth metal ions such as Nd3+ from an aqueous medium. The obtained adsorption isotherms were fitted to the...

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Bibliographic Details
Published in:Journal of industrial and engineering chemistry (Seoul, Korea) 2018, 67(0), , pp.210-218
Main Authors: Ravi, Seenu, Zhang, Siqian, Lee, Yu-Ri, Kang, Kyoung-Ku, Kim, Ji-Man, Ahn, Ji-Whan, Ahn, Wha-Seung
Format: Article
Language:English
Subjects:
화학공학
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Summary:Ethylenediaminetetraacetic acid (EDTA)-functionalized KIT-6 and KCC-1 mesoporous silicas were prepared via post-synthesis grafting and examined for their ability to promote the recovery of rare earth metal ions such as Nd3+ from an aqueous medium. The obtained adsorption isotherms were fitted to the Langmuir model, which gave a maximum adsorption of Nd3+ ions of 109.8 and 96.5 mg/g for KIT-6-EDTA and KCC-1-EDTA, respectively, at 25 °C and pH 6. The adsorption kinetic profile of KIT-6 was faster than KCC-1. KIT-6 was also proved to be more stable against desorption under acidic regeneration conditions. KCI Citation Count: 58
ISSN:1226-086X
1876-794X
DOI:10.1016/j.jiec.2018.06.031