Removal of Iron(II) Using Intercalated Ca/Al Layered Double Hydroxides With [-SiW12O40]4-

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Submitted: 01-07-2018
Published: 25-01-2019
Section: Original Research Articles
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Ca/Al layered double hydroxides (LDH) was synthesized by co-precipitation method at pH 11 at room temperature following calcination at 800 oC. Synthesized Ca/Al LDH was intercalated with Keggin ion [α-SiW12O40]4- to form intercalated Ca/Al LDH. Characterization was performed using powder X-Ray and FTIR analyses. Ca/Al LDH and intercalated Ca/Al LDH was used as an adsorbent of iron(II) in an aqueous medium. The adsorption process was studied by kinetic and thermodynamic studies. The results showed that Ca/Al LDH has layered structures which were indicated at diffraction 2q at 20 deg. Diffraction 2q at 30-40 deg from intercalated Ca/Al LDH shows [α-SiW12O40]4-  successfully conducted. Adsorption of iron(II) on LDH showed that intercalated Ca/Al LDH has slightly higher adsorption capacity than LDH without intercalation. 

Received: 1st July 2018; Revised: 5th November 2018; Accepted: 9th November 2018


layered double hydroxides, iron(II), Keggin ion, adsorption

  1. Aldes Lesbani  Orcid Scopus
    Department of Chemistry, Universitas Sriwijaya, Indonesia
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