Removal of Arsenic and Copper from Water Solution Using Magnetic Iron/Bentonite Nanoparticles (Fe3O4/Bentonite)

Shabani, Erfan; Salimi, Farhad; Jahangiri, Alireza

doi:10.1007/s12633-018-9895-z

Cited by 29 publications

(8 citation statements)

References 59 publications

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“…The pseudo 1 st order kinetic model was found by other authors for iron oxide-based sorbents for arsenic and heavy metals removal. 97 The q t vs. t 0.5 plots ( Fig. 6d ) were fitted by the intraparticle diffusion model that, up to 240 minutes, accounts for one single diffusion mechanism.…”

Section: Resultsmentioning

confidence: 99%

“…The pseudo 1 st order kinetic model was found by other authors for iron oxide-based sorbents for arsenic and heavy metals removal. 97 The q t vs. t 0.5 plots (Figure 6d) were fitted by the intraparticle diffusion model that, up to 240 minutes, accounts for one single diffusion mechanism. The faster adsorption rate of APTES-SBA15 is visible also in this case, and it is reflected in the rate constant (k i ) of almost one order of magnitude higher.…”

Section: Discussionmentioning

confidence: 99%

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Meso- and macroporous silica-based arsenic adsorbents: effect of pore size, nature of the active phase, and silicon release

et al. 2021

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Meso- and macroporous silica-based arsenic adsorbents: effect of pore size, nature of the active phase, and silicon release

et al. 2021

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“…is may be due to the catalytic absorption of CO 2 during the coprecipitation synthesis of the BMNC [45]. Another peak that occurred at 655 cm −1 is assigned to Fe-O stretching and is proof of magnetite nanoparticles in BMNC [46].…”

Section: Ftir Analysismentioning

confidence: 84%

Synthesis and Characterization of Fe3O4-Bentonite Nanocomposite Adsorbent for Cr(VI) Removal from Water Solution

Adisu

Balakrishnan

Tibebe

2022

International Journal of Chemical Engineering

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Bentonite-magnetite nanocomposite adsorbent (BMNC) was made and investigated for its adsorption removal of Cr(VI) from an aqueous solution. This adsorbent was prepared by the coprecipitation method from sodium bentonite (BNa) with iron chloride solution at controlled pH and under an inert atmosphere. These adsorbents were characterized by atomic absorption spectrophotometer (AAS), Brunauer–Emmett–Teller (BET), dynamic light scattering (DLS), scanning electron microscope (SEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray diffraction (XRD) analyses. Particle size of BMNC was in the range of 15 to 95 nm as per DLS. The intercalation of magnetite nanoparticles onto the bentonite clay increased its specific surface area from 142 to 177 m2/g as per BET analysis. Experimental design optimization results in 96.5% of Cr(VI) removal from the water solution at optimized adsorption parameters viz., adsorption time of 101 min, pH of 1.95, adsorbent dose of 1.12 g/L, and initial Cr(VI) concentration of 36.2 mg/L. The results of these studies demonstrate that the BMNC performs well. Moreover, the adsorption of Cr(VI) onto the BMNC was found to be the best fit with Langmuir isotherm (R2 = 0.9984) and a maximum adsorption capacity of 98 mg/g. The kinetics of the adsorption process was found to be a pseudo-second-order model (R2 = 0.9912). The BMNC also showed favourable reusability for adsorbate Cr(VI) ions removal from the water solution.

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“…It has unique structural properties that help with the adsorption of HM (Zhao et al, 2013). Nano-bentonite increased adsorption of Ni, Zn, Co, Cd, Hg, Cr, and Pb (Doaa et al, 2020;Erfan et al, 2019;Hend et al, 2016;Mahmoud et al, 2017;Shiqing et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Remediation of heavy metals in contaminated soil by using nano‐bentonite, nano‐hydroxyapatite, and nano‐composite

El-Nagar

Abdel-Halim

2021

Land Degrad Dev

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Soil and water contaminants have an impact on ecosystems, agricultural productivity, groundwater, and human health. Therefore, it is necessary to develop new technologies to treat pollution, one of these techniques is the use of nanomaterials (NMs).This study aimed to evaluate the efficiency of bentonite nano-sheet structure (n-Be), hydroxyapatite nanoparticles (HapNP), and their nano-composite (n-Be/HapNC) on immobilizing nickel (Ni), copper (Cu), and lead (Pb) in peanut-cultivated soil. The prepared materials were characterized by X-ray powder diffraction, atomic force microscopy, surface area, and Fourier transform infrared. Eight levels of material were used T1 (bentonite, 1 t ha À1 ), T2 (hydroxyapatite, 1 t ha À1 ), T3 (HapNPs, 50 kg ha À1 ), T4 (HapNPs, 100 kg ha À1 ), T5 (n-Be, 50 kg ha À1 ), T6 (n-Be, 100 kg ha À1 ), T7 (n-Be/ HapNC, 50 kg ha À1 ), and T8 (n-Be/HapNC, 100 kg ha À1 ). The results indicated that the available Ni, Cu, and Pb showed a significant decline in the treated soil, in comparison to untreated. Levels of Ni exhibited a decrease in the following order: T8 < T6 < T7 < T5. Similar patterns were observed for Cu and Pb levels, where treatment T8 exhibited the greatest decline compared to the control. Uptake of heavy metals (HM) by peanut components (leaves, stems, and seeds) showed significant declines for the treatments, compared to the control. Treatment (n-Be/HapNC, 100 kg ha À1 ) showed the lowest transfer coefficient of Ni (0.53) and Cu (0.048) compared to control (0.71 and 0.097), respectively. Treatments of NMs significantly exhibited increases in fresh weight, pods, and seeds, compared to the control. From all findings, it is obtained that nano-forms of such materials can immobilize HM in contaminated soil, enhance its characteristics, decrease HM-uptake by plants, and are considered good immobilizers for HM in soil. These materials play a role in treating contaminated soil and thus making it suitable for agriculture.

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Removal of Arsenic and Copper from Water Solution Using Magnetic Iron/Bentonite Nanoparticles (Fe3O4/Bentonite)

Cited by 29 publications

References 59 publications

Meso- and macroporous silica-based arsenic adsorbents: effect of pore size, nature of the active phase, and silicon release

Meso- and macroporous silica-based arsenic adsorbents: effect of pore size, nature of the active phase, and silicon release

Synthesis and Characterization of Fe3O4-Bentonite Nanocomposite Adsorbent for Cr(VI) Removal from Water Solution

Remediation of heavy metals in contaminated soil by using nano‐bentonite, nano‐hydroxyapatite, and nano‐composite

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