Recycling of uranyl from contaminated water

Klemen Bohinc, Jurij Rescic, Jean-Francois Dufreche, Leo Lue

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Many separation processes are related to the behavior of ions close to charged surfaces. In this work, we examine uranyl ions, which can be considered as rod-like molecular ions with a spatially distributed charge, embedded in a system of like charged surfaces. The analysis of the system is based on an approximate field theory which is accurate from the weak to the strong electrostatic coupling regimes. The numerical results show that close to the charged surface the ions are oriented parallel to the surface, whereas at distances greater than half of the ion length, they are randomly oriented. Due to the restriction of the orientational degrees of freedom, the density of ions at the charged surface decreases to zero. For large surface charge densities, the force between like charged surfaces becomes attractive, as a result of charge correlations. The theoretical results are in good agreement with Monte Carlo simulation results
LanguageEnglish
Pages10846-10851
Number of pages6
JournalJournal of Physical Chemistry B
Volume117
Issue number37
Early online date16 Aug 2013
DOIs
Publication statusPublished - 2013

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recycling
Recycling
Ions
Water
water
ions
Surface charge
Charge density
molecular ions
Electrostatics
constrictions
rods
degrees of freedom
electrostatics
simulation

Keywords

  • recycling
  • contaminated water
  • uranyl

Cite this

Bohinc, Klemen ; Rescic, Jurij ; Dufreche, Jean-Francois ; Lue, Leo. / Recycling of uranyl from contaminated water. In: Journal of Physical Chemistry B . 2013 ; Vol. 117, No. 37. pp. 10846-10851.
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Bohinc, K, Rescic, J, Dufreche, J-F & Lue, L 2013, 'Recycling of uranyl from contaminated water' Journal of Physical Chemistry B , vol. 117, no. 37, pp. 10846-10851. https://doi.org/10.1021/jp404822f

Recycling of uranyl from contaminated water. / Bohinc, Klemen; Rescic, Jurij; Dufreche, Jean-Francois; Lue, Leo.

In: Journal of Physical Chemistry B , Vol. 117, No. 37, 2013, p. 10846-10851.

Research output: Contribution to journalArticle

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AU - Bohinc, Klemen

AU - Rescic, Jurij

AU - Dufreche, Jean-Francois

AU - Lue, Leo

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AB - Many separation processes are related to the behavior of ions close to charged surfaces. In this work, we examine uranyl ions, which can be considered as rod-like molecular ions with a spatially distributed charge, embedded in a system of like charged surfaces. The analysis of the system is based on an approximate field theory which is accurate from the weak to the strong electrostatic coupling regimes. The numerical results show that close to the charged surface the ions are oriented parallel to the surface, whereas at distances greater than half of the ion length, they are randomly oriented. Due to the restriction of the orientational degrees of freedom, the density of ions at the charged surface decreases to zero. For large surface charge densities, the force between like charged surfaces becomes attractive, as a result of charge correlations. The theoretical results are in good agreement with Monte Carlo simulation results

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