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A simple model for solute–solvent separation through nanopores based on core-softened potentials

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Listed:
  • de Vasconcelos, Cláudia K.B.
  • Batista, Ronaldo J.C.
  • da Rocha Régis, McGlennon
  • Manhabosco, Taíse M.
  • de Oliveira, Alan B.

Abstract

We propose an effective model for solute separation from fluids through reverse osmosis based on core-softened potentials. Such potentials have been used to investigate anomalous fluids in several situations under a great variety of approaches. Due to their simplicity, computational simulations become faster and mathematical treatments are possible. Our model aims to mimic water desalination through nano-membranes through reverse osmosis, for which we have found reasonable qualitative results when confronted against all-atoms simulations found in the literature. The purpose of this work is not to replace any fully atomistic simulation at this stage, but instead to pave the first steps towards coarse-grained models for water desalination processes. This may help to approach problems in larger scales, in size and time, and perhaps make analytical theories more viable.

Suggested Citation

  • de Vasconcelos, Cláudia K.B. & Batista, Ronaldo J.C. & da Rocha Régis, McGlennon & Manhabosco, Taíse M. & de Oliveira, Alan B., 2016. "A simple model for solute–solvent separation through nanopores based on core-softened potentials," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 453(C), pages 184-193.
    • Handle: RePEc:eee:phsmap:v:453:y:2016:i:c:p:184-193
    DOI: 10.1016/j.physa.2016.02.035
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    References listed on IDEAS

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    1. Buldyrev, Sergey V. & Stanley, H.Eugene, 2003. "A system with multiple liquid–liquid critical points," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 330(1), pages 124-129.
    2. Mohammad Heiranian & Amir Barati Farimani & Narayana R. Aluru, 2015. "Water desalination with a single-layer MoS2 nanopore," Nature Communications, Nature, vol. 6(1), pages 1-6, December.
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