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Synthesis of Ni-Fe-CO3 layered double hydroxide as Effective Adsorbent to remove Cr(VI) and ARS-dye from aqueous media. 31,  2023, 103214.

Author name : ISMAIL MOHAMED AHMED IBRAHIM
Publication Date : 2023-08-09
Journal Name : Environmental Technology & Innovation.

Abstract

Abstract
Ni2+/Fe3＋LDH, (Ni-Fe-CO3 LDH) with Ni/Fe molar ratio 3.0 was synthesized by co-precipitation for the remediation of chromium (VI), and Alizarine Red-S (ARS-dye) as anionic species. The investigated adsorbent was characterized by TGA, SEM, XRD, BET and FTIR. The effect of the hydrogen ion concentration of the medium, shaking time, ARS-dye and/or Cr(VI) concentration and adsorbents mass on the process was studied. The results of Ni-Fe-CO3 LDH fitted well with the pseudo-second-order model. Langmuir isotherm is more favor than the Freundlich isotherm with maximum capacity (Qmax) of 69.9 and 6.1 mg/g for ARS-dye and Cr(VI), respectively.

Keywords

Layered double hydroxides, Adsorption, Alizarine Red-S (ARS) and Cr(VI)

Publication Link

https://doi.org/10.1016/j.eti.2023.103214

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