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Article: Osmotically enhanced reverse osmosis using hollow fiber membranes

TitleOsmotically enhanced reverse osmosis using hollow fiber membranes
Authors
KeywordsOsmotically enhanced recovery
Mathematical model
Reverse osmosis membrane
Hollow fiber
Fertilizer
Issue Date2021
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci
Citation
Journal of Membrane Science, 2021, v. 638, p. article no. 119703 How to Cite?
AbstractOsmotically enhanced reverse osmosis (OERO) effectively increases the water recovery in desalination as it can reduce the transmembrane osmotic pressure by a sweep solution. Utilizing a model based on mass-transfer principles, we report the performance of a hollow-fiber RO membrane module in OERO as a function of the operating conditions, the fiber geometry, and the membrane properties. The hollow fiber system allows the feed and sweep solutions to flow on both sides of the membrane. To avoid energy-intensive solute/water separation, fertilizer can be employed as a “green” sweep solution as it can be directly used for fertigation (fertilized irrigation). Simulations indicated that the water recovery is significantly enhanced by increasing the water permeance and decreasing the structure parameter of the hollow fiber membranes. Further, an investigation into the role of feed salinity suggests that longer fibers can provide a higher water recovery in the case of low-salinity water reuse, while larger-diameter fibers achieve a more efficient seawater desalination. A single-stage OERO process facilitates the enhancement of water recovery from 35.5 % and 14 % to 36.5 % and 34 % in the case of low-salinity and high-salinity desalinations, respectively. This study provides theoretical perspectives into the design of hollow fiber modules for OERO processes.
Persistent Identifierhttp://hdl.handle.net/10722/305303
ISSN
2020 Impact Factor: 8.742
2020 SCImago Journal Rankings: 1.929
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, X-
dc.contributor.authorMei, Y-
dc.contributor.authorZhang, J-
dc.contributor.authorYang, Y-
dc.contributor.authorPeng, LE-
dc.contributor.authorQing, W-
dc.contributor.authorHe, D-
dc.contributor.authorFane, AG-
dc.contributor.authorTang, CY-
dc.date.accessioned2021-10-20T10:07:31Z-
dc.date.available2021-10-20T10:07:31Z-
dc.date.issued2021-
dc.identifier.citationJournal of Membrane Science, 2021, v. 638, p. article no. 119703-
dc.identifier.issn0376-7388-
dc.identifier.urihttp://hdl.handle.net/10722/305303-
dc.description.abstractOsmotically enhanced reverse osmosis (OERO) effectively increases the water recovery in desalination as it can reduce the transmembrane osmotic pressure by a sweep solution. Utilizing a model based on mass-transfer principles, we report the performance of a hollow-fiber RO membrane module in OERO as a function of the operating conditions, the fiber geometry, and the membrane properties. The hollow fiber system allows the feed and sweep solutions to flow on both sides of the membrane. To avoid energy-intensive solute/water separation, fertilizer can be employed as a “green” sweep solution as it can be directly used for fertigation (fertilized irrigation). Simulations indicated that the water recovery is significantly enhanced by increasing the water permeance and decreasing the structure parameter of the hollow fiber membranes. Further, an investigation into the role of feed salinity suggests that longer fibers can provide a higher water recovery in the case of low-salinity water reuse, while larger-diameter fibers achieve a more efficient seawater desalination. A single-stage OERO process facilitates the enhancement of water recovery from 35.5 % and 14 % to 36.5 % and 34 % in the case of low-salinity and high-salinity desalinations, respectively. This study provides theoretical perspectives into the design of hollow fiber modules for OERO processes.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci-
dc.relation.ispartofJournal of Membrane Science-
dc.subjectOsmotically enhanced recovery-
dc.subjectMathematical model-
dc.subjectReverse osmosis membrane-
dc.subjectHollow fiber-
dc.subjectFertilizer-
dc.titleOsmotically enhanced reverse osmosis using hollow fiber membranes-
dc.typeArticle-
dc.identifier.emailTang, CY: tangc@hku.hk-
dc.identifier.authorityTang, CY=rp01765-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.memsci.2021.119703-
dc.identifier.scopuseid_2-s2.0-85112444731-
dc.identifier.hkuros326761-
dc.identifier.volume638-
dc.identifier.spagearticle no. 119703-
dc.identifier.epagearticle no. 119703-
dc.identifier.isiWOS:000691537900006-
dc.publisher.placeNetherlands-

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