Numerical Modeling and Performance Prediction of Nanofiltration

A special issue of Membranes (ISSN 2077-0375). This special issue belongs to the section "Membrane Physics and Theory".

Deadline for manuscript submissions: closed (15 September 2020) | Viewed by 4400

Special Issue Editor


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Guest Editor
Aix Marseille Univ, CNRS, Centrale Marseille, M2P2, 38 rue Joliot-Curie, 13451 Marseilles, France
Interests: membrane processes; modeling; ultrafiltration; nanofiltration; reverse osmosis; process intensification; microfluidics; microencapsulation; micromixing

Special Issue Information

Dear Colleagues,

Nanofiltration is presently applied worldwide for seawater desalination, wastewater treatment, and water reclamation, for ultrapure water production, and in process industry niches such as organic solvent nanofiltration, pharmaceutical and biological applications, etc. The design, optimization, and scale-up of such a process still require the development of good predictive models. Through modeling, we gain a deeper understanding of main coupled phenomena while being able to predict performance more effectively. Advances in predictive model development allow determining the optimal process parameters and operating conditions in order to reach a high flux and high rejection rates with a minimal energy requirement.

This Special Issue on “Numerical Modeling and Performance Prediction of Nanofiltration” of the journal Membranes seeks contributions to assess the state-of-the art and future developments in the field of development of predictive models. Topics include but are not limited to mathematical modeling, new modeling approaches, artificial intelligence, transport models, and coupling phenomena. Authors are invited to submit their latest results; both original papers and reviews are welcome.

Prof. Pierrette Guichardon
Guest Editor

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Keywords

  • nanofiltration
  • modeling
  • prediction
  • transport phenomena
  • hydrodynamics
  • mass transfer
  • concentration polarization
  • fouling
  • flux
  • rejection

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Published Papers (1 paper)

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Research

20 pages, 7852 KiB  
Article
A Molecular Dynamics Study on Rotational Nanofluid and Its Application to Desalination
by Qingsong Tu, Wice Ibrahimi, Steven Ren, James Wu and Shaofan Li
Membranes 2020, 10(6), 117; https://doi.org/10.3390/membranes10060117 - 6 Jun 2020
Cited by 6 | Viewed by 3974
Abstract
In this work, we systematically study a rotational nanofluidic device for reverse osmosis (RO) desalination by using large scale molecular dynamics modeling and simulation. Moreover, we have compared Molecular Dynamics simulation with fluid mechanics modeling. We have found that the pressure generated by [...] Read more.
In this work, we systematically study a rotational nanofluidic device for reverse osmosis (RO) desalination by using large scale molecular dynamics modeling and simulation. Moreover, we have compared Molecular Dynamics simulation with fluid mechanics modeling. We have found that the pressure generated by the centrifugal motion of nanofluids can counterbalance the osmosis pressure developed from the concentration gradient, and hence provide a driving force to filtrate fresh water from salt water. Molecular Dynamics modeling of two different types of designs are performed and compared. Results indicate that this novel nanofluidic device is not only able to alleviate the fouling problem significantly, but it is also capable of maintaining high membrane permeability and energy efficiency. The angular velocity of the nanofluids within the device is investigated, and the critical angular velocity needed for the fluids to overcome the osmotic pressure is derived. Meanwhile, a maximal angular velocity value is also identified to avoid Taylor-Couette instability. The MD simulation results agree well with continuum modeling results obtained from fluid hydrodynamics theory, which provides a theoretical foundation for scaling up the proposed rotational osmosis device. Successful fabrication of such rotational RO membrane centrifuge may potentially revolutionize the membrane desalination technology by providing a fundamental solution to the water resource problem. Full article
(This article belongs to the Special Issue Numerical Modeling and Performance Prediction of Nanofiltration)
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