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Efficient removal of europium radionuclides from natural and seawater using mesoporous carbon-based material.

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Title: Efficient removal of europium radionuclides from natural and seawater using mesoporous carbon-based material.
Authors: Burakov, Alexander E.1 (AUTHOR), Tyagi, Inderjeet1,2 (AUTHOR) inderjeettyagi@zsi.gov.in, Burakova, Irina V.1 (AUTHOR), Milyutin, Vitaly V.3 (AUTHOR), Nekrasova, Natalya A.3 (AUTHOR), Melezhik, Alexander V.1 (AUTHOR), Tkachev, Alexey G.1 (AUTHOR), Karri, Rama Rao4 (AUTHOR), Dehghani, Mohammad Hadi5,6 (AUTHOR), Suhas7 (AUTHOR), Chandniha, Surendra K.8 (AUTHOR)
Source: Journal of Molecular Liquids. Nov2022, Vol. 365, pN.PAG-N.PAG. 1p.
Subjects: Europium, Radioisotopes, Activated carbon, Radioactive wastes, Seawater, Charcoal, Mesoporous materials, Artificial seawater
Abstract: • Europium radionuclides were selected as model pollutant. • Real samples such as natural and seawater is used. • Novel nanocomposite material namely MPC is applied as adsorbent. • MPC possessed high specific surface area ∼ 2360 m2/g. Liquid radioactive waste (LRW) presents the most significant environmental hazard due to its high aggregate activity and rapid distribution in the environment. The paper presents the structure and adsorption characteristics features of a new nanocomposite material namely mesoporous carbon (MPC). Characterization studies depicts that the material obtained consisted of bundles of carbon nanotubes coated with a uniform layer of porous carbon shell. The study on the MPC porous structure disclosed that the resulting material possess a combination of micro and mesopores with a predominant size of 1–6 nm and a specific surface area of 2360 m2 g−1. Adsorption characteristics of the MPC were studied using the sorption of 152Eu radionuclide from natural and seawater. Activated charcoal, coconut charcoal, and a gel-type strong-acidic sulfonic cation exchanger were used as reference materials. The synthesized MPC was found to have the distribution coefficients (K d) of 152Eu over 3 × 106 cm3 g−1, which was 1–3 orders of magnitude higher than for the reference sorbents. The kinetics study of the 152Eu sorption on the MPC showed that the sorption equilibrium was attained in 5 min, three times less than the activated charcoal. High adsorption of MPC is associated with the colloidal of europium species on the developed surface of the carbon sorbent. Results conclude that the synthesized mesoporous carbon material makes a promising adsorbent for removing europium and other radionuclides, namely, cerium, lanthanum, zirconium, plutonium, and americium, from neutral solutions, where those radionuclides exist in either colloidal or pseudo colloidal form. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Molecular Liquids is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 159057039
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PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Efficient removal of europium radionuclides from natural and seawater using mesoporous carbon-based material.
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  Data: <searchLink fieldCode="AR" term="%22Burakov%2C+Alexander+E%2E%22">Burakov, Alexander E.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tyagi%2C+Inderjeet%22">Tyagi, Inderjeet</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> inderjeettyagi@zsi.gov.in</i><br /><searchLink fieldCode="AR" term="%22Burakova%2C+Irina+V%2E%22">Burakova, Irina V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Milyutin%2C+Vitaly+V%2E%22">Milyutin, Vitaly V.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nekrasova%2C+Natalya+A%2E%22">Nekrasova, Natalya A.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Melezhik%2C+Alexander+V%2E%22">Melezhik, Alexander V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tkachev%2C+Alexey+G%2E%22">Tkachev, Alexey G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Karri%2C+Rama+Rao%22">Karri, Rama Rao</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dehghani%2C+Mohammad+Hadi%22">Dehghani, Mohammad Hadi</searchLink><relatesTo>5,6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Suhas%22">Suhas</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chandniha%2C+Surendra+K%2E%22">Chandniha, Surendra K.</searchLink><relatesTo>8</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Molecular+Liquids%22">Journal of Molecular Liquids</searchLink>. Nov2022, Vol. 365, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Europium%22">Europium</searchLink><br /><searchLink fieldCode="DE" term="%22Radioisotopes%22">Radioisotopes</searchLink><br /><searchLink fieldCode="DE" term="%22Activated+carbon%22">Activated carbon</searchLink><br /><searchLink fieldCode="DE" term="%22Radioactive+wastes%22">Radioactive wastes</searchLink><br /><searchLink fieldCode="DE" term="%22Seawater%22">Seawater</searchLink><br /><searchLink fieldCode="DE" term="%22Charcoal%22">Charcoal</searchLink><br /><searchLink fieldCode="DE" term="%22Mesoporous+materials%22">Mesoporous materials</searchLink><br /><searchLink fieldCode="DE" term="%22Artificial+seawater%22">Artificial seawater</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • Europium radionuclides were selected as model pollutant. • Real samples such as natural and seawater is used. • Novel nanocomposite material namely MPC is applied as adsorbent. • MPC possessed high specific surface area ∼ 2360 m2/g. Liquid radioactive waste (LRW) presents the most significant environmental hazard due to its high aggregate activity and rapid distribution in the environment. The paper presents the structure and adsorption characteristics features of a new nanocomposite material namely mesoporous carbon (MPC). Characterization studies depicts that the material obtained consisted of bundles of carbon nanotubes coated with a uniform layer of porous carbon shell. The study on the MPC porous structure disclosed that the resulting material possess a combination of micro and mesopores with a predominant size of 1–6 nm and a specific surface area of 2360 m2 g−1. Adsorption characteristics of the MPC were studied using the sorption of 152Eu radionuclide from natural and seawater. Activated charcoal, coconut charcoal, and a gel-type strong-acidic sulfonic cation exchanger were used as reference materials. The synthesized MPC was found to have the distribution coefficients (K d) of 152Eu over 3 × 106 cm3 g−1, which was 1–3 orders of magnitude higher than for the reference sorbents. The kinetics study of the 152Eu sorption on the MPC showed that the sorption equilibrium was attained in 5 min, three times less than the activated charcoal. High adsorption of MPC is associated with the colloidal of europium species on the developed surface of the carbon sorbent. Results conclude that the synthesized mesoporous carbon material makes a promising adsorbent for removing europium and other radionuclides, namely, cerium, lanthanum, zirconium, plutonium, and americium, from neutral solutions, where those radionuclides exist in either colloidal or pseudo colloidal form. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Molecular Liquids is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.molliq.2022.120092
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Europium
        Type: general
      – SubjectFull: Radioisotopes
        Type: general
      – SubjectFull: Activated carbon
        Type: general
      – SubjectFull: Radioactive wastes
        Type: general
      – SubjectFull: Seawater
        Type: general
      – SubjectFull: Charcoal
        Type: general
      – SubjectFull: Mesoporous materials
        Type: general
      – SubjectFull: Artificial seawater
        Type: general
    Titles:
      – TitleFull: Efficient removal of europium radionuclides from natural and seawater using mesoporous carbon-based material.
        Type: main
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            NameFull: Burakov, Alexander E.
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            NameFull: Burakova, Irina V.
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            – D: 01
              M: 11
              Text: Nov2022
              Type: published
              Y: 2022
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              Value: 365
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