Vacuum membrane distillation of liquid desiccants Utilizing Hollow Fiber Membranes

Handle URI:
http://hdl.handle.net/10754/627020
Title:
Vacuum membrane distillation of liquid desiccants Utilizing Hollow Fiber Membranes
Authors:
Lefers, Ryan ( 0000-0001-7354-3370 ) ; Srivatsa Bettahalli, N.M.; Fedoroff, Nina V.; Nunes, Suzana Pereira ( 0000-0002-3669-138X ) ; Leiknes, TorOve ( 0000-0003-4046-5622 )
Abstract:
This paper documents the testing of a vacuum membrane distillation system intended for use with liquid desiccants. Liquid desiccants offer the possibility for low-energy, ambient temperature dehumidification. Effective desalination and purification of diluted desiccants outputs two important products: a concentrated desiccant for reuse in dehumidification and fresh water. In this study, vacuum membrane distillation was used in the laboratory to purify diluted liquid desiccants. Calcium chloride and magnesium chloride were the desiccants selected for testing. Desiccant solutions were pumped through the lumens of poly(vinylidene fluoride) (PVDF) hollow fiber membranes at varying feed inlet temperatures, solution velocity rates and vacuum set points during membrane distillation. An average flux of 8 kg m-2 h-1 was obtained using 30 wt% magnesium chloride solution at a temperature of 50 °C while applying vacuum to achieve 25 mbar absolute pressure on the air side of the membrane. The results are promising for the development of a full-scale vacuum membrane distillation process for desiccant solution regeneration and fresh water recovery. In addition, the recovered condensate was of sufficient quality for use in agricultural irrigation or drinking water.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC); Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Emeritus Distinguished Professor of Biosciences, KAUST, Thuwal, 23955-6900, Saudi Arabia
Citation:
Lefers R, Srivatsa Bettahalli NM, Fedoroff N, Nunes SP, Leiknes T (2018) Vacuum membrane distillation of liquid desiccants Utilizing Hollow Fiber Membranes. Separation and Purification Technology. Available: http://dx.doi.org/10.1016/j.seppur.2018.01.042.
Publisher:
Elsevier BV
Journal:
Separation and Purification Technology
Issue Date:
31-Jan-2018
DOI:
10.1016/j.seppur.2018.01.042
Type:
Article
ISSN:
1383-5866
Sponsors:
The research reported in this publication was sponsored by King Abdullah University of Science and Technology (KAUST). The authors thank colleagues from the Nanostructured Polymeric Membrane (NPM) group, as well as the Water Desalination and Reuse Center (WDRC), and KAUST’s Core Labs for their help on equipment and analysis.
Additional Links:
http://www.sciencedirect.com/science/article/pii/S1383586617330083
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Environmental Science and Engineering Program; Physical Sciences and Engineering (PSE) Division; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorLefers, Ryanen
dc.contributor.authorSrivatsa Bettahalli, N.M.en
dc.contributor.authorFedoroff, Nina V.en
dc.contributor.authorNunes, Suzana Pereiraen
dc.contributor.authorLeiknes, TorOveen
dc.date.accessioned2018-02-01T11:45:55Z-
dc.date.available2018-02-01T11:45:55Z-
dc.date.issued2018-01-31en
dc.identifier.citationLefers R, Srivatsa Bettahalli NM, Fedoroff N, Nunes SP, Leiknes T (2018) Vacuum membrane distillation of liquid desiccants Utilizing Hollow Fiber Membranes. Separation and Purification Technology. Available: http://dx.doi.org/10.1016/j.seppur.2018.01.042.en
dc.identifier.issn1383-5866en
dc.identifier.doi10.1016/j.seppur.2018.01.042en
dc.identifier.urihttp://hdl.handle.net/10754/627020-
dc.description.abstractThis paper documents the testing of a vacuum membrane distillation system intended for use with liquid desiccants. Liquid desiccants offer the possibility for low-energy, ambient temperature dehumidification. Effective desalination and purification of diluted desiccants outputs two important products: a concentrated desiccant for reuse in dehumidification and fresh water. In this study, vacuum membrane distillation was used in the laboratory to purify diluted liquid desiccants. Calcium chloride and magnesium chloride were the desiccants selected for testing. Desiccant solutions were pumped through the lumens of poly(vinylidene fluoride) (PVDF) hollow fiber membranes at varying feed inlet temperatures, solution velocity rates and vacuum set points during membrane distillation. An average flux of 8 kg m-2 h-1 was obtained using 30 wt% magnesium chloride solution at a temperature of 50 °C while applying vacuum to achieve 25 mbar absolute pressure on the air side of the membrane. The results are promising for the development of a full-scale vacuum membrane distillation process for desiccant solution regeneration and fresh water recovery. In addition, the recovered condensate was of sufficient quality for use in agricultural irrigation or drinking water.en
dc.description.sponsorshipThe research reported in this publication was sponsored by King Abdullah University of Science and Technology (KAUST). The authors thank colleagues from the Nanostructured Polymeric Membrane (NPM) group, as well as the Water Desalination and Reuse Center (WDRC), and KAUST’s Core Labs for their help on equipment and analysis.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S1383586617330083en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Separation and Purification Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Separation and Purification Technology, 31 January 2018. DOI: 10.1016/j.seppur.2018.01.042. © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectDesalinationen
dc.subjectmembrane distillationen
dc.subjectliquid desiccanten
dc.subjectcontrolled environment agricultureen
dc.titleVacuum membrane distillation of liquid desiccants Utilizing Hollow Fiber Membranesen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentEnvironmental Science and Engineering Programen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentEmeritus Distinguished Professor of Biosciences, KAUST, Thuwal, 23955-6900, Saudi Arabiaen
dc.identifier.journalSeparation and Purification Technologyen
dc.eprint.versionPost-printen
kaust.authorLefers, Ryanen
kaust.authorSrivatsa Bettahalli, N.M.en
kaust.authorFedoroff, Nina V.en
kaust.authorNunes, Suzana Pereiraen
kaust.authorLeiknes, TorOveen
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