Hydrodynamic analysis of spiral wound reverse osmosis membrane recovery fraction and permeate water flow rate

Taherinejad, Morteza; Derakhshan, Shahram; Yavarinasab, Adel

doi:10.1016/j.desal.2017.02.009

Cited by 12 publications

(4 citation statements)

References 35 publications

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“…= −μ ∂u ∂z z=0 (7) where γ is the surface tension of the liquid. By applying those boundary conditions, we obtain…”

Section: ∂γ ∂X Z=0mentioning

confidence: 99%

Marangoni stress induced by free-surface for pressure reduction in reverse osmosis

Arias

2018

Desalination

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© 2018. This version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/Marangoni hydrodynamic motion and its potential technological application in reverse osmosis (RO) process for seawater desalination is discussed. The fundamental core idea in this note is the possibility to take advantage of the inherent concentration gradient in a RO process. It is well known that to run a RO process, it is necessary to apply a hydrodynamic pressure to overcome the osmotic pressure, however, by inducing a free-surface, e.g., a Leidenfrost surface, on the membrane wall, an additional hydrodynamic Marangoni stress could be generated, which, likewise than the osmotic pressure is driven by the concentration gradient but acting in the opposite direction, i.e., reducing the external hydraulic pressure to be applied. Utilizing a simplified geometrical and physical model, an analytical expression for the pressure reduction was derived. One important preliminary result in this work, is that the Marangoni stress can provide pressure against the osmotic pressure for membrane porous that are less than micrometric size.Peer ReviewedPostprint (author's final draft

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“…= −μ ∂u ∂z z=0 (7) where γ is the surface tension of the liquid. By applying those boundary conditions, we obtain…”

Section: ∂γ ∂X Z=0mentioning

confidence: 99%

Marangoni stress induced by free-surface for pressure reduction in reverse osmosis

Arias

2018

Desalination

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“…The other software, including MATLAB [102,104,117], ROSA [149][150][151], NUMECA [152], MUSUBI [153], was used rarely. Also, in work [154], it was carried out the analysis of the possibility of applying the RO seawater desalination by the commercial systems CORMIX, VISUAL PLUMES, and VISJET.…”

Section: F15mentioning

confidence: 99%

Simulation of Reverse Osmosis Process: Novel Approaches and Development Trends

Huliienko

Korniyenko

Muzyka

et al. 2022

JES

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Reverse osmosis is an essential technological separation process that has a large number of practical applications. The mathematical simulation is significant for designing and determining the most effective modes of membrane equipment operation and for a deep understanding of the processes in membrane units. This paper is an attempt at systematization and generalizing the results of the investigations dedicated to reverse osmosis simulation, which was published from 2011 to 2020. The main approaches to simulation were analyzed, and the scope of use of each of them was delineated. It was defined that computational fluid dynamics was the most used technique for reverse osmosis simulation; the intensive increase in using of molecular dynamics methods was pointed out. Since these two approaches provide the deepest insight into processes, it is likely that they will further be widely used for reverse osmosis simulations. At the same time, for the simulation of the membrane plant, it is reasonable to use the models that required the simplest solutions methods. The solution-diffusion model appears to be the most effective and flexible for these purposes. Therefore, this model was widely used in considering the period. The practical problems solved using each of the considered approaches were reviewed. Moreover, the software used for the solution of the mathematical models was regarded.

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“…The fluid dynamics and the mass transfer of water in a spacer‐filled channel can be modeled by the transport mechanisms of a flow through porous media , , , , . The prevailing flow regime inside a permeate spacer is found to be laminar in earlier studies , .…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Influence of Membrane Intrusion on Permeate‐Sided Pressure Drop During High‐Pressure Reverse Osmosis

Kleffner

Braun

Antonyuk

2019

Chemie Ingenieur Technik

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By replacing thermal concentration processes, high-pressure reverse osmosis has the potential to contribute to cost and energy savings regarding concepts for industrial water reuse. To provide a better understanding of the spiral-wound element behavior during high-pressure operation, this study focusses on the investigation of their performance by scrutinizing the crucial effect of the permeate-sided pressure drop induced by membrane-spacer interactions. The experiments show a considerable influence of membrane intrusion on the element performance with a strong dependence on the feed pressure.

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Hydrodynamic analysis of spiral wound reverse osmosis membrane recovery fraction and permeate water flow rate

Cited by 12 publications

References 35 publications

Marangoni stress induced by free-surface for pressure reduction in reverse osmosis

Marangoni stress induced by free-surface for pressure reduction in reverse osmosis

Simulation of Reverse Osmosis Process: Novel Approaches and Development Trends

Influence of Membrane Intrusion on Permeate‐Sided Pressure Drop During High‐Pressure Reverse Osmosis

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