Indonesian Kaolin supported nZVI (IK-nZVI) used for the an efficient removal of Pb(II) from aqueous solutions: Kinetics, thermodynamics and mechanism

Lakkaboyana, Sivarama Krishna; Soontarapa, Khantong; Asmel, Nabel Kalel; Obaidullah, Salehie; Kumar, Vinay; Kannan, Karthik; Venkateswarlu, Katta; Yuzir, Ali; Yaacob, Wan Zuhairi Wan

doi:10.1016/j.jece.2021.106483

Cited by 34 publications

(13 citation statements)

References 54 publications

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“…While at higher initial U( vi ) concentrations, uranyl ions must diffuse into the internal surface through intraparticle diffusion. 37 Moreover, Q e increases from 6.69 to 60.98 mg g −1 as [U( vi )] 0 increases, indicating that as the initial concentration of U( vi ) increases, the adsorption capacity shows an increasing trend before reaching saturation.…”

Section: Resultsmentioning

confidence: 97%

Preparation of carboxy methyl cellulose stabilized nano-sized zero-valent iron and its properties for in situ remediation of groundwater in areas after acid in situ leach uranium mining

Zhang

Ding

et al. 2023

Environ. Sci.: Water Res. Technol.

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Section: Resultsmentioning

confidence: 97%

Preparation of carboxy methyl cellulose stabilized nano-sized zero-valent iron and its properties for in situ remediation of groundwater in areas after acid in situ leach uranium mining

Zhang

Ding

et al. 2023

Environ. Sci.: Water Res. Technol.

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“…FTIR Analysis FTIR analysis was performed for FP and FP-nZVI, and the results are shown in Figure 2. In Figure 2, 3394 cm −1 is the stretching vibration peak of -OH; 2914 cm −1 is the stretching vibration peak of -CH 2 ; 1645 cm −1 can be attributed to H-O-H stretching [35]; and 1044 cm −1 is the C-O stretching vibration peak [36]. When nZVI was loaded onto FP, a new peak of FP-nZVI appeared at 509 cm −1 , which can be attributed to Fe-O stretching vibration [37].…”

Section: Resultsmentioning

confidence: 98%

Removal of Hexavalent Chromium in Aqueous Solution by Cellulose Filter Paper Loaded with Nano-Zero-Valent Iron: Performance Investigation and Numerical Modeling

Ren

Huang³

et al. 2023

IJERPH

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Cr(VI) pollution in water bodies is very harmful to human health and the environment. Therefore, it is necessary to remove Cr(VI) from water. In this study, the composite (FP-nZVI) was prepared by loading nano-zero-valent iron (nZVI) onto cellulose filter paper (FP) using a liquid-phase reduction method to improve the dispersibility and oxidation resistance of nZVI. In batch experiments, the effects of iron loading of FP-nZVI, initial concentration of Cr(VI), temperature, and pH on Cr(VI) removal were particularly investigated. The maximum removal rate of 98.6% was achieved at 25 °C, pH = 5, initial concentration of Cr(VI) of 20 mg/L, and FeCl3·6H2O solution concentration of 0.8 mol/L. The removal of Cr(VI) by FP-nZVI conformed to a pseudo-second-order kinetic model and Langmuir isotherm model. The mechanism of Cr(VI) removal was a multi-step removal mechanism, involving adsorption, reduction, and coprecipitation. Column experiments investigated the effect of flow rate (1 mL/min, 3 mL/min, and 5 mL/min) on Cr(VI) removal. We found that increasing flow rate slightly decreased the removal rate of Cr(VI). The transport of Cr(VI) in composite porous media was simulated using HYDRUS-1D, and the results show that the two-site model can well simulate the reactive transport of Cr(VI). This study may provide a useful reference for the remediation of groundwater contaminated with Cr(VI) or other similar heavy metals using FP-nZVI.

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“…Over the years, the classic borohydride reduction method for preparing ZVINPs has been modified using various stabilizers or surface modifiers to acquire more stable and appropriate ZVINP delivery for scavenging gaseous oxygen, treating different organic and inorganic contaminants in water and soil, ,, and targeting drug delivery and improved magnetic resonance imaging …”

Section: Introductionmentioning

confidence: 99%

“…1,33−35 Over the years, the classic borohydride reduction method for preparing ZVINPs has been modified using various stabilizers or surface modifiers to acquire more stable and appropriate ZVINP delivery for scavenging gaseous oxygen, treating different organic and inorganic contaminants in water and soil, 4,36,37 and targeting drug delivery and improved magnetic resonance imaging. 38 Reducing an aqueous iron salt in the presence of a support material can reduce the effect of iron nanoparticle aggregation, offering a higher specific surface area and consequently a higher reactivity. 19,28,39 A number of researchers have attempted to anchor iron nanoparticles on solid supports such as zeolites, 40−43 graphene and active carbons, 10,12,44,45 and nanoclays.…”

Section: Introductionmentioning

confidence: 99%

Oxygen Scavenging Hybrid Nanostructure: Localization of Different Iron Nanoparticles on Montmorillonite Clays Host

et al. 2022

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According to the great potential of zero-valent iron nanoparticle applications in the environmental, medical, chemical, packaging and many other industries, there is still a need to tailor their production methods. This study reports the production of a hybrid nanostructure based on iron nanoparticles (INPs) produced in/on montmorillonite (MMT) nanoclays as an oxygen scavenger and barrier additive in polymeric packaging materials of oxygen-sensitive products. INPs and MMT were demonstrated to have effective mutual interactions in which the MMT host played a chemophysical trapping role for iron particles, causing smaller particles around 10 nm with 6.2 g/m 2 higher specific surface area by limiting particle growth and agglomeration. In return, the embedding of primary iron cations in/on clays and growth of these particles during the reduction reaction pushed the clay layers out and helped further clay intercalation–exfoliation. Effective study of solvent and primary cation (Fe 2+ /Fe 3+ ) types showed different preferences in interacting with natural and alkylammonium-modified MMT, resulting in the different site selection. Fe 2+ cations preferred to migrate to the interlayer space, whereas Fe 3+ cations tended to bond to the clay surface. The obtained results in this study suggest tailoring the ultimate oxygen scavenging capacity, shelf life, and migration properties of a hybrid nanoparticle according to the application requirements.

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Indonesian Kaolin supported nZVI (IK-nZVI) used for the an efficient removal of Pb(II) from aqueous solutions: Kinetics, thermodynamics and mechanism

Cited by 34 publications

References 54 publications

Preparation of carboxy methyl cellulose stabilized nano-sized zero-valent iron and its properties for in situ remediation of groundwater in areas after acid in situ leach uranium mining

Preparation of carboxy methyl cellulose stabilized nano-sized zero-valent iron and its properties for in situ remediation of groundwater in areas after acid in situ leach uranium mining

Removal of Hexavalent Chromium in Aqueous Solution by Cellulose Filter Paper Loaded with Nano-Zero-Valent Iron: Performance Investigation and Numerical Modeling

Oxygen Scavenging Hybrid Nanostructure: Localization of Different Iron Nanoparticles on Montmorillonite Clays Host

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