Adsorption of Fe(II) by Layered Double Hydroxide Composite with Carbon-Based Material (Biochar and Graphite): Reusability and Thermodynamic Properties

Abstract

Layered double hydroxide (LDH) of Ni/Al was synthesized by coprecipitation method at pH 10 followed by the formation of composite with carbon-based material i.e., biochar (B) and graphite (G) to form Ni/Al-B and Ni/Al-G. Materials were characterized by XRD powder, FTIR, BET surface area, thermal analyses, and SEM analysis. The regeneration process and adsorption evaluated the performance of materials toward iron(II) [Fe(II)] from an aqueous solution. The results showed that the surface area of Ni/Al-B (428.94 m2/g) was increased mainly up to twenty-nine-fold than Ni/Al LDH (15.11 m2/g), while Ni/Al-G (21.59 m2/g) had slightly increased than pristine LDH. Composite of Ni/Al-B had reusability properties for Fe(II) adsorption up to five cycles and showed higher structural stability. The adsorption capacity of Ni/Al-B was 104.167 mg/g and can be a potential adsorbent to remove Fe(II) from an aqueous solution.

Layered Double Hydroxide Coated by Carbon-Based Material for Environmental Dye Pollutant

“…Thus, the morphological properties of CC-NiAl LDH showed smoothly agglomerated structure (Figures 3b, c, and d). Conversely, the observed surface of carbon-doped NiAl LDH showed that carbon compound was well dispersed and had an almost spherical structure and more possibly demonstrated that NiAl LDHs which was strongly networked by carbon compound has developed a porous material (specifically CBC (Palapa et al, 2023b)). This observation can be explained by the formation of intermolecular interactions between carbon compound and NiAl LDHs.…”

“…Layered double hydroxides (LDHs) coated with carbon-based materials have shown promising potential for environmental applications (Palapa et al, 2023b), especially in the removal of dye pollutants from water (Choong et al, 2021;Mourid et al, 2019). LDHs are a class of inorganic materials with a unique layered structure consisting of positively charged metal hydroxide layers with interlayer anions to balance the charge (Sajid et al, 2022).…”

Enhanced Ammonium Adsorption from Aqueous Solutions Using Ethylenediaminetetraacetic Acid (EDTA) Modified Lampung (Indonesia) Natural Zeolite: Isotherm, Kinetic, and Thermodynamic Studies

“…This could be attributed to the increased repulsive forces between the adsorbed ammonium ions and those still in the solution or possibly diffusion limitations within the zeolite's microporous structure (Muscarella et al, 2021) . In contrast, the adsorption capacity of the EDTA-modified zeolites, ZE_0.05 and ZE_0.1, generally increased over the contact time, though some fluctuations were observed (Palapa et al, 2023) . The continuous increase in adsorption capacity for the modified zeolites, particularly within the initial 20 minutes, suggests that the EDTA modification might have enhanced the selectivity for ammonium ions or altered the surface charge properties, improving the overall adsorption process (Pérez-Botella et al, 2022) .…”

ZnAl LDH-based Derivative Materials as Photocatalysts: Synthesis, Characterization, and Catalytic Performance in Tetracycline Degradation

“…The composite spectra of ZnAl LDH-GME and ZnAl LDO-GME demonstrate composite precursor materials. Palapa and Wijaya (2023) reported that the combined FT-IR spectra of precursor materials in composite materials may indicate the success of the composite synthesis process. GME's characteristic vibration peaks at 2800-2900 cm −1 and 1500-1600 cm −1 reflect asymmetric stretching of the methylene group (CH 2 ) and C C stretching of the aromatic ring (Yasir et al, 2022).…”