Application of Mn-Fe Layered Double Hydroxide as an Adsorbent for the Removal of Arsenic from Synthetic Acid Mine Drainage

Irawan, Chairul; Sari, Ayu Ratma; Yulianingtias, Aproditha; Melinda, Rizani Aulia; Mirwan, Agus

doi:10.23955/rkl.v16i2.19215

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…showed adsorption capacity of iron-coated cork granulates as 4.3 and 4.9 mg g –1 for the removal of As(V) and As(III), respectively, with their initial concentration of 25 mg/L at 20 °C for 24 h contact time using 2.5 g/L of sample dose . Iron-based layered double hydroxides exhibited efficient arsenic adsorption due to their synergistic effect of the interlayered structure and the presence of iron containing metal–oxygen bonds, facilitating electrostatic interactions with arsenite/arsenate oxyanions. − …”

Section: Introductionmentioning

confidence: 97%

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Low Temperature Processing of Iron Oxide Nanoflakes from Red Mud Extract toward Favorable De-arsenification of Water

2023

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Iron oxide (α-Fe2O3) was synthesized from red mud extract followed by hydrothermal reaction at 150 °C/6–24 h in the presence of NH4OH. The crystallinity of α-Fe2O3 increased with reaction time as confirmed by X-ray Diffraction, while Fourier transform infrared spectroscopy and Raman illustrate the symmetric stretching vibration of the Fe–O bond in α-Fe2O3. The X-ray photoelectron spectroscopic analysis shows O 1s spectra at 530.6, 531.2, and 532 eV, signifying the lattice oxygen in Fe–O, surface oxygen defects, and oxygen in adsorbed hydroxyl groups, respectively. The morphology of α-Fe2O3 nanoflakes was noticed from field emission scanning electron microscopy and transmission electron microscopy. The developed particles reveal the BET surface area in the range of 136–347 m2/g. The maximum As(V) adsorption capacity of 32–41 mg/g was obtained for adsorbent dose of 0.25 g/L. The arsenic level could be lowered down to 2–3 μg/L (<10 μg/L as per WHO’s limit) with contaminated real water (64 μg/L) using 0.25 g/L of sample dose within 5 min of adsorption.

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Section: Introductionmentioning

confidence: 97%

“… 24 Iron-based layered double hydroxides exhibited efficient arsenic adsorption due to their synergistic effect of the interlayered structure and the presence of iron containing metal–oxygen bonds, facilitating electrostatic interactions with arsenite/arsenate oxyanions. 27 − 30 …”

Section: Introductionmentioning

confidence: 99%

Low Temperature Processing of Iron Oxide Nanoflakes from Red Mud Extract toward Favorable De-arsenification of Water

2023

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SBA-15 with short-sized channels modified with Fe2O3 nanoparticles. A novel approximation of an efficient adsorbent for As removal in contaminated water

Palos-Barba,

Mendoza,

Millán-Malo

et al. 2024

J Porous Mater

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The urgent need for technologies to ensure health standards, as per the Sustainable Development Goals established by the United Nations, has prompted research into addressing human health problems associated with chemical contaminants in air, water, and soil. Heavy metals, particularly arsenic, pose significant health risks, with millions of people worldwide exposed to concentrations exceeding recommended limits. Nanostructured materials, including ordered mesoporous substrates such as SBA-15, have shown promise for arsenic removal due to their high surface area and pore characteristics. This study aimed to synthesize a silica mesoporous material with reduced pore channel length to enhance surface area and active sites, thereby improving arsenic removal efficiency. By exploring various surfactant-to-silica precursor ratios, a suitable value was identified to promote the production of shortened SBA-15 particles. These shortened pore channels facilitated the dispersion of iron oxide nanoparticles (Fe2O3) on the SBA-15 surface, resulting in an effective adsorbent that achieved over 95% arsenic removal. The combination of the modified SBA-15 substrate and Fe2O3 nanoparticles demonstrated high efficiency in arsenic removal from aqueous effluents, offering a promising solution to address water pollution and associated health risks.

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Layered Double Hydroxide Materials: A Review on Their Preparation, Characterization, and Applications

et al. 2023

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Layered double hydroxides (LDHs), a type of synthetic clay with assorted potential applications, are deliberated upon in view of their specific properties, such as adsorbent-specific behavior, biocompatibility, fire-retardant capacity, and catalytic and anion exchange properties, among others. LDHs are materials with two-dimensional morphology, high porosity, and exceptionally tunable and exchangeable anionic particles with sensible interlayer spaces. The remarkable feature of LDHs is their flexibility in maintaining the interlayer spaces endowing them with the capacity to accommodate a variety of ionic species, suitable for many applications. Herein, some synthetic methodologies, general characterizations, and applications of LDHs are summarized, encompassing their broader appliances as a remarkable material to serve society and address several problems viz. removal of pollutants and fabrication of sensors and materials with multifaceted useful applications in the medical, electrochemical, catalytic, and agricultural fields, among others.

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Application of Mn-Fe Layered Double Hydroxide as an Adsorbent for the Removal of Arsenic from Synthetic Acid Mine Drainage

Cited by 3 publications

References 19 publications

Low Temperature Processing of Iron Oxide Nanoflakes from Red Mud Extract toward Favorable De-arsenification of Water

Low Temperature Processing of Iron Oxide Nanoflakes from Red Mud Extract toward Favorable De-arsenification of Water

SBA-15 with short-sized channels modified with Fe2O3 nanoparticles. A novel approximation of an efficient adsorbent for As removal in contaminated water

Layered Double Hydroxide Materials: A Review on Their Preparation, Characterization, and Applications

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