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AuthorKhraisheh, Majeda
AuthorDawas N.
AuthorNasser M.S.
AuthorAl-Marri M.J.
AuthorHussien M.A.
AuthorAdham S.
AuthorMcKay G.
Available date2022-05-21T08:36:52Z
Publication Date2020
Publication NameEnvironmental Technology (United Kingdom)
ResourceScopus
Identifierhttp://dx.doi.org/10.1080/09593330.2019.1575476
URIhttp://hdl.handle.net/10576/31203
AbstractForward osmosis (FO) has received widespread recognition in the past decade due to its potential low energy production of water. This study presents a new model analysis for predicting the water flux in FO systems when inorganic-based draw solutions are used under variable experimental conditions for using a laboratory scale cross-flow single cell unit. The new model accounts for the adverse impact of concentration polarization (both ICP and ECP) incorporating the water activity by Pitzer to calculate the bulk osmotic pressures. Using the water activity provides a better correlation of experimental data than the classical van?t Hoff equation. The nonlinear model also gave a better estimate for the structural parameter factor (S) of the membrane in its solution. Furthermore, the temperature and concentration of both the draw and feed solutions played a significant role in increasing the water flux, which could be interpreted in terms of the mass transfer coefficient representing ECP; a factor sensitive to the hydraulics of the system. The model provides greatly improved correlations for the experimental water fluxes.
Languageen
PublisherTaylor and Francis Ltd.
Subjectdraw solution
Forward osmosis
membrane separation
osmotic pressure
water flux modelling
TitleOsmotic pressure estimation using the Pitzer equation for forward osmosis modelling
TypeArticle
Pagination2533-2545
Issue Number19
Volume Number41
dc.accessType Open Access


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