Glutathione@Fe3O4 Nanoparticles as Efficient Material for the Adsorption of Mercury(II) from Water At Low Concentrations

1
Wilfredo Marimón-Bolívar
Wilfredo Marimón-Bolívar
2
Edgar E. González
Edgar E. González
1 Pontificia Universidad Javeriana

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The application of magnetic nanoparticles (MNPs) in environmental and chemical engineering is progressively increasing, leading to the development of new surface modifications using green methodologies. Magnetite nanoparticles functionalized with Glutathione (Glutathione@MNPs) were synthesized by a novel eco-friendly method using glutathione as a reductant and stabilizer agent.Mercury adsorption was investigated at different initial pH values, contact time, temperatures and adsorbate-adsorbent concentrations. Maximum Hg2+ removal took place at pH 7.5. Adsorption dynamic data were best described by pseudo-second order rate equation, and adsorption equilibrium data were best fitted to Langmuir equation.Maximum adsorption capacities of 34.48 mg/g at 1 mg/L of initial conditions and 25°C was obtained. Regeneration of Glutathione@MNPs and recovery of Hg2+ was demonstrated using 0.1 M KI and HCl up to ten cycles of adsorption.

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No external funding was declared for this work.

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The authors declare no conflict of interest.

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No ethics committee approval was required for this article type.

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Not applicable for this article.

Wilfredo Marimón-Bolívar. 2019. \u201cGlutathione@Fe3O4 Nanoparticles as Efficient Material for the Adsorption of Mercury(II) from Water At Low Concentrations\u201d. Global Journal of Science Frontier Research - B: Chemistry GJSFR-B Volume 19 (GJSFR Volume 19 Issue B1): .

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GJSFR Volume 19 Issue B1
Pg. 11- 24
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Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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GJSFR-B Classification: FOR Code: 030299
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v1.2

Issue date

February 16, 2019

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English

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The application of magnetic nanoparticles (MNPs) in environmental and chemical engineering is progressively increasing, leading to the development of new surface modifications using green methodologies. Magnetite nanoparticles functionalized with Glutathione (Glutathione@MNPs) were synthesized by a novel eco-friendly method using glutathione as a reductant and stabilizer agent.Mercury adsorption was investigated at different initial pH values, contact time, temperatures and adsorbate-adsorbent concentrations. Maximum Hg2+ removal took place at pH 7.5. Adsorption dynamic data were best described by pseudo-second order rate equation, and adsorption equilibrium data were best fitted to Langmuir equation.Maximum adsorption capacities of 34.48 mg/g at 1 mg/L of initial conditions and 25°C was obtained. Regeneration of Glutathione@MNPs and recovery of Hg2+ was demonstrated using 0.1 M KI and HCl up to ten cycles of adsorption.

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Glutathione@Fe3O4 Nanoparticles as Efficient Material for the Adsorption of Mercury(II) from Water At Low Concentrations

Wilfredo Marimón-Bolívar
Wilfredo Marimón-Bolívar Pontificia Universidad Javeriana
Edgar E. González
Edgar E. González

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