Dilute single and mixed solute systems in a spiral wound reserve osmosis module Part I: Theoretical model development

Dickson, James M.; Spencer, Jordan L.; Costa, M.L.

doi:10.1016/0011-9164(92)80153-z

Cited by 28 publications

(15 citation statements)

References 24 publications

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“…The water transport across a reverse osmosis membrane results in a permeation flow Q P . It is well modelled by the following phenomenological equation (Dickson et al, 1992;Kimura and Sourirajan, 1967;Lonsdale et al, 1965;Marinas and Uruma, 1996;Spiegler and Kedem, 1966):…”

Section: Reverse Osmosis Module Modellingmentioning

confidence: 99%

Spiral Wound Reverse Osmosis Modules Decomposition into Elementary Units by Analyzing Stimulus Response Experiments: Characterization of the Solute Transfer across the Membrane

2003

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TheoryThere are two approaches for flow modelling: the momentum equations deriving from Navier -Stokes equations and the global method issued from the exploitation of the tracing experiments (Danckwerts, 1953). The first one needs a tedious, finite-elements numerical resolution to obtain the flow pattern in each point of the device. It is difficult to conduct this methodology on the spiral wound reverse osmosis geometry. The second method splits up the device into a small number of well-known reactor flows (perfectly mixing cells, plug flow, dispersed plug flow) according to the device geometry (Leclerc et al., 1995).

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Section: Reverse Osmosis Module Modellingmentioning

confidence: 99%

Spiral Wound Reverse Osmosis Modules Decomposition into Elementary Units by Analyzing Stimulus Response Experiments: Characterization of the Solute Transfer across the Membrane

2003

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“…O p ) µ ln e vr +(11)O p ) -84.428 ln(e vr ) + 459.21(12) O p ) -2.0473 ln(e vr ) + 18.141(13) O p ) -0.0778 ln(e vr ) + 0.9476(14) …”

mentioning

confidence: 98%

Nonlinear Model-Based Control of an Experimental Reverse-Osmosis Water Desalination System

Bartman

Christofides

Cohen

2009

Ind. Eng. Chem. Res.

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This work focuses on the design and implementation of a nonlinear model-based control system on an experimental reverse-osmosis (RO) membrane water desalination system to address large set-point changes and variations in feedwater salinity. A dynamic nonlinear lumped-parameter model is derived using firstprinciples, and its parameters are computed from experimental data to minimize the error between model predictions and experimental RO system response. This model then is used as the basis for the design of a nonlinear control system, using geometric control techniques. The nonlinear control system is implemented on the experimental RO system, and its set-point tracking and disturbance rejection capabilities are successfully evaluated.

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“…The major components of a spiral wound module are the membrane, the feed and permeate channels, spacers in the feed and permeate channels, the permeate tube and the membrane housing (Dickson et al, 1992;Schwinge et al, 2004). The feed flow spacers, which usually consist in non-woven nearly cylindrical filaments, serve to separate adjacent leaves of the membrane and to create flow passages, but also to promote flow unsteadiness and therefore, to enhance mass transport.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of red grape must nanofiltration: Laboratory and pilot plant scales

Salgado

Palacio

Prádanos

et al. 2015

Food and Bioproducts Processing

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Dilute single and mixed solute systems in a spiral wound reserve osmosis module Part I: Theoretical model development

Cited by 28 publications

References 24 publications

Spiral Wound Reverse Osmosis Modules Decomposition into Elementary Units by Analyzing Stimulus Response Experiments: Characterization of the Solute Transfer across the Membrane

Spiral Wound Reverse Osmosis Modules Decomposition into Elementary Units by Analyzing Stimulus Response Experiments: Characterization of the Solute Transfer across the Membrane

Nonlinear Model-Based Control of an Experimental Reverse-Osmosis Water Desalination System

Comparative study of red grape must nanofiltration: Laboratory and pilot plant scales

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