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

Exploring foci of: Environmental Technology & Innovation • Vol 31 Synthesis of Ni-Fe-CO3 layered double hydroxide as Effective Adsorbent to remove Cr(VI) and ARS-dye from aqueous media May 2023 • Ismail M. Ahmed, Ahmed I. Abd‐Elhamid, Ashraf A. Aly, Stefan Bräse, AbdElAziz A. Nayl Ni$^2$/Fe$^{3＋}$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-CO$_3$ LDH fitted well with the pseudo-second-order model. Langmuir isother… Open Article Page

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