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Effective adsorption of toluene and benzene on coconut activated carbon modified with carbon nanotubes: kinetics, isotherms and thermodynamics.

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Title: Effective adsorption of toluene and benzene on coconut activated carbon modified with carbon nanotubes: kinetics, isotherms and thermodynamics.
Authors: Memetova, Anastasia E.1 (AUTHOR), Burakova, Irina V.1 (AUTHOR) iris_tamb68@mail.ru, Burakov, Alexander E.1 (AUTHOR), Memetov, Nariman R.1 (AUTHOR), Tkachev, Alexey G.1 (AUTHOR)
Source: Adsorption. Aug2023, Vol. 29 Issue 5/6, p335-349. 15p.
Abstract: The paper describes the adsorption of toluene and benzene on a new sorption material—coconut activated carbon (AC) modified with carbon nanotubes. The new material was characterized using Raman spectroscopy, scanning and transmission electron microscopy, X-ray diffractometry and FTIR. Also, the parameters of the porous space and the specific surface area were determined. The adsorption capacity for toluene and benzene was 123.53 and 84.92 mg g−1, respectively, the contact time was 60 min. The kinetic data were described using intraparticle diffusion, and the results of isothermal studies were described using the Langmuir, Freundlich, and Dubinin-Radushkevich equations. It was found that the adsorption of toluene and benzene considered Weber-Maurice model, that conform to a diffusion with fluid phase film resistance. In addition, the physical nature of adsorption is confirmed by the values of free energy (E = 6.92 and 8.41 kJ moL−1 for benzene and toluene, respectively). According to a thermodynamic study, the Gibbs energy values for nanomodified AC were − 16.32 kJ moL−1 for benzene and − 33.33 kJ moL−1 for toluene, which corresponds to the range of values for physical sorption. Thus, the material can be considered as a promising adsorbent for removing organic pollutants from aqueous media. [ABSTRACT FROM AUTHOR]
Copyright of Adsorption is the property of Springer Nature 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.)
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  Label: Title
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  Data: Effective adsorption of toluene and benzene on coconut activated carbon modified with carbon nanotubes: kinetics, isotherms and thermodynamics.
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  Data: <searchLink fieldCode="AR" term="%22Memetova%2C+Anastasia+E%2E%22">Memetova, Anastasia E.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Burakova%2C+Irina+V%2E%22">Burakova, Irina V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> iris_tamb68@mail.ru</i><br /><searchLink fieldCode="AR" term="%22Burakov%2C+Alexander+E%2E%22">Burakov, Alexander E.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Memetov%2C+Nariman+R%2E%22">Memetov, Nariman R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tkachev%2C+Alexey+G%2E%22">Tkachev, Alexey G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Adsorption%22">Adsorption</searchLink>. Aug2023, Vol. 29 Issue 5/6, p335-349. 15p.
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The paper describes the adsorption of toluene and benzene on a new sorption material—coconut activated carbon (AC) modified with carbon nanotubes. The new material was characterized using Raman spectroscopy, scanning and transmission electron microscopy, X-ray diffractometry and FTIR. Also, the parameters of the porous space and the specific surface area were determined. The adsorption capacity for toluene and benzene was 123.53 and 84.92 mg g−1, respectively, the contact time was 60 min. The kinetic data were described using intraparticle diffusion, and the results of isothermal studies were described using the Langmuir, Freundlich, and Dubinin-Radushkevich equations. It was found that the adsorption of toluene and benzene considered Weber-Maurice model, that conform to a diffusion with fluid phase film resistance. In addition, the physical nature of adsorption is confirmed by the values of free energy (E = 6.92 and 8.41 kJ moL−1 for benzene and toluene, respectively). According to a thermodynamic study, the Gibbs energy values for nanomodified AC were − 16.32 kJ moL−1 for benzene and − 33.33 kJ moL−1 for toluene, which corresponds to the range of values for physical sorption. Thus, the material can be considered as a promising adsorbent for removing organic pollutants from aqueous media. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Adsorption is the property of Springer Nature 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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        Value: 10.1007/s10450-023-00405-y
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        Text: English
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      – TitleFull: Effective adsorption of toluene and benzene on coconut activated carbon modified with carbon nanotubes: kinetics, isotherms and thermodynamics.
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              M: 08
              Text: Aug2023
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              Y: 2023
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