Competitive adsorption of Cd (II) and Pb (II) ions from aqueous solution onto Iranian hematite (Sangan mine): optimum condition and adsorption isotherm study

Khorshidi, Niyayesh; Azadmehr, Amirreza

doi:10.5004/dwt.2017.0038

Cited by 25 publications

(6 citation statements)

References 48 publications

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“…Characteristic Fe-O stretching between 400 to 100 cm -1 was detected in all samples. Speci cally, at ~540 cm -1 , iron oxide species were formed in the wide pH range between 5.5 to 11.5 (20)(21)(22).…”

Section: Resultsmentioning

confidence: 98%

Synthesis and Investigation of Superparamagnetic Nano-structured Fe3O4 (Magnetite) Powder Using Co-Precipitation Method

Saraçoğlu

Bakırdöven

Arpalı

et al. 2023

Preprint

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Superparamagnetic Fe3O4 nanoparticles have potential biomedical applications, but their synthesis can be challenging and costly. In this study, we present a simple and facile method for synthesizing these nanoparticles via the co-precipitation method. The pH and stabilizer concentration were optimized to obtain Fe3O4 nanoparticles with superparamagnetic characteristics and aggregated morphology in high purity. X-ray diffraction analysis revealed that the maximum magnetite formation was achieved at a pH of 12.5. Scanning electron microscopy (SEM) and vibrating sample magnetometry (VSM) were used to characterize the morphological and magnetic properties of the synthesized powders, respectively. The results showed that the synthesized particles were micrometer-sized, composed of nanoparticles ranging from 50 to 110 nm in size, and exhibited superparamagnetic behavior with a value of 40 emu/g. The superparamagnetic behavior was attributed to the presence of nanosized crystallites and nanoparticles in the aggregated structure rather than monodisperse particles. Overall, the co-precipitation method presented in this study offers an easy, non-toxic, and fast method for synthesizing Fe3O4 nanoparticles, which may be suitable for industrial-scale production.

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Section: Resultsmentioning

confidence: 98%

Synthesis and Investigation of Superparamagnetic Nano-structured Fe3O4 (Magnetite) Powder Using Co-Precipitation Method

Saraçoğlu

Bakırdöven

Arpalı

et al. 2023

Preprint

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“…The band at 1635 cm −1 which found in residue‐TiO 2 can be attributed to the Ti‐OH bending vibration. The bands at 521 cm −1 from hydrolised‐Fe 2 O 3 FT‐IR spectra is related to Fe‐O functional group for hematite [30] …”

Section: Resultsmentioning

confidence: 99%

“…The bands at 521 cm À 1 from hydrolised-Fe 2 O 3 FT-IR spectra is related to Fe-O functional group for hematite. [30] Field Emission Scanning Electron Microscopy (FE-SEM) was utilized to evaluating the changes in the morphology of ilmenite following to the hydrometallurgical products, which represented in Figure 5. Figure 5(a) shown a representation of the morphology of ilmenite ore in its bulk size form.…”

Section: Characterization Of Tio 2 and Fe 2 O 3 Products From Ilmenitementioning

confidence: 99%

Separation of TiO₂ and Fe₂O₃ from Indonesia Ilmenite Minerals and their Application as Photocatalysts for Eriochrome Black‐T Dye Degradation

Putri,

Arutanti,

Wardhani

et al. 2024

ChemistrySelect

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Anatase‐TiO2 and α‐Fe2O3 were successfully separated from Indonesia ilmenite minerals using a modification of the hydrometallurgy process. Sodium salt was used as an initiated roasting before hydrochloric leaching. The study investigated parameters that affect separation such as mass ratios of sodium salt to ilmenite and leaching temperature. The results revealed that Ti composition in residue‐TiO2 increased to 76 % while Fe‐composition in filtrate‐Fe2O3 was 87 %. The XRD diffractogram analysis confirmed that main phase formed in residue of separation was anatase‐TiO2 whereas in hydrolysed of filtrate from separation was hematite. Both residue‐TiO2 and filtrate Fe2O3 had high thermal stability. The photocatalytic activity of anatase‐TiO2 and α‐Fe2O3 showed about 97 % and 85 % of Eriochrome Black‐T dye solution was degraded, respectively, when conducted to 4 hours of UV light irradiation. Photocatalytic kinetics study of anatase‐TiO2 and α‐Fe2O3 in degradation process followed pseudo‐first order with reaction rate at 0.0144 and 0.0070 min−1, respectively.

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“…After all the active sites of 10% Fe-MCA are occupied and the equilibrium adsorption is obtained. 34,38…”

Section: Resultsmentioning

confidence: 99%

“…After all the active sites of 10% Fe-MCA are occupied and the equilibrium adsorption is obtained. 34,38 The effect of the initial concentration at different temperatures (25 °C, 35 °C, 45 °C) on the adsorption of Pb(II) on 10% Fe-MCA was studied. The results showed that the maximum adsorption capacity was 66 mg g −1 at 25 °C, while the adsorption capacity decreases to 55 mg g −1 at 35 °C and 45 mg g −1 at 45 °C, illustrating that the increase in temperature is not conducive to the adsorption reaction.…”

Section: Effect Of Different Iron Content For Pnp Adsorptionmentioning

confidence: 99%

Adsorption and co-adsorption mechanisms of p-nitrophenol and Pb(ii) on magnetic carbon aerogel in water

Liu

Chen

Sheng

et al. 2022

Environ. Sci.: Water Res. Technol.

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Competitive adsorption of Cd (II) and Pb (II) ions from aqueous solution onto Iranian hematite (Sangan mine): optimum condition and adsorption isotherm study

Cited by 25 publications

References 48 publications

Synthesis and Investigation of Superparamagnetic Nano-structured Fe3O4 (Magnetite) Powder Using Co-Precipitation Method

Synthesis and Investigation of Superparamagnetic Nano-structured Fe3O4 (Magnetite) Powder Using Co-Precipitation Method

Separation of TiO₂ and Fe₂O₃ from Indonesia Ilmenite Minerals and their Application as Photocatalysts for Eriochrome Black‐T Dye Degradation

Adsorption and co-adsorption mechanisms of p-nitrophenol and Pb(ii) on magnetic carbon aerogel in water

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Competitive adsorption of Cd (II) and Pb (II) ions from aqueous solution onto Iranian hematite (Sangan mine): optimum condition and adsorption isotherm study

Cited by 25 publications

References 48 publications

Synthesis and Investigation of Superparamagnetic Nano-structured Fe3O4 (Magnetite) Powder Using Co-Precipitation Method

Synthesis and Investigation of Superparamagnetic Nano-structured Fe3O4 (Magnetite) Powder Using Co-Precipitation Method

Separation of TiO2 and Fe2O3 from Indonesia Ilmenite Minerals and their Application as Photocatalysts for Eriochrome Black‐T Dye Degradation

Adsorption and co-adsorption mechanisms of p-nitrophenol and Pb(ii) on magnetic carbon aerogel in water

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Separation of TiO₂ and Fe₂O₃ from Indonesia Ilmenite Minerals and their Application as Photocatalysts for Eriochrome Black‐T Dye Degradation