Freeze desalination of seawater using LNG cold energy

Handle URI:
http://hdl.handle.net/10754/614819
Title:
Freeze desalination of seawater using LNG cold energy
Authors:
Chang, Jian; Zuo, Jian; Lu, Kang-Jia; Chung, Neal Tai-Shung ( 0000-0003-3704-8609 )
Abstract:
With the aid of cold energy from regasification of liquefied natural gas (LNG), freeze desalination (FD) is an emerging technology for seawater desalination because of its low energy characteristics and insensitivities to fouling problems. This work aims to investigate the major operating parameters of FD such as coolant temperature, freezing duration, supercooling, seeding, agitation, crystallizer material and subsequent washing procedure on ice production and water quality. It was found that the optimal freezing duration per batch was 1 h for an iron crystallizer and 1.5 h for a glass crystallizer. The optimal coolant temperature should be around −8 °C. The optimal amount of washing water to clean the raw ice was about 50 wt% of the raw ice. Over 50 wt% of the feed could be recovered as raw ice within 1 h, which means an overall ice recovery rate of higher than 25% (of the original seawater), considering the consumption of washing water. Both artificial and real seawater were tested under the optimized conditions. The total dissolved solid in the product ice was around 300 ppm, which met the World Health Organization (WHO) potable water salinity standard of 500 ppm. Therefore, the process parameters optimized in this study can be directly used for the freeze desalination of seawater.
KAUST Department:
Water Desalination & Reuse Research Cntr
Citation:
Freeze desalination of seawater using LNG cold energy 2016 Water Research
Publisher:
Elsevier BV
Journal:
Water Research
Issue Date:
23-Jun-2016
DOI:
10.1016/j.watres.2016.06.046
Type:
Article
ISSN:
00431354
Sponsors:
The authors would like to thank Singapore National Research Foundation under its Energy Innovation Research Programme for supporting the project entitled, “Using Cold Energy from Re-gasification of Liquefied Natural Gas (LNG) for Novel Hybrid Seawater Desalination Technologies” (Grant number: R-279-000-456-279).
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0043135416304845
Appears in Collections:
Articles

Full metadata record

DC FieldValue Language
dc.contributor.authorChang, Jianen
dc.contributor.authorZuo, Jianen
dc.contributor.authorLu, Kang-Jiaen
dc.contributor.authorChung, Neal Tai-Shungen
dc.date.accessioned2016-06-27T10:36:09Z-
dc.date.available2016-06-27T10:36:09Z-
dc.date.issued2016-06-23-
dc.identifier.citationFreeze desalination of seawater using LNG cold energy 2016 Water Researchen
dc.identifier.issn00431354-
dc.identifier.doi10.1016/j.watres.2016.06.046-
dc.identifier.urihttp://hdl.handle.net/10754/614819-
dc.description.abstractWith the aid of cold energy from regasification of liquefied natural gas (LNG), freeze desalination (FD) is an emerging technology for seawater desalination because of its low energy characteristics and insensitivities to fouling problems. This work aims to investigate the major operating parameters of FD such as coolant temperature, freezing duration, supercooling, seeding, agitation, crystallizer material and subsequent washing procedure on ice production and water quality. It was found that the optimal freezing duration per batch was 1 h for an iron crystallizer and 1.5 h for a glass crystallizer. The optimal coolant temperature should be around −8 °C. The optimal amount of washing water to clean the raw ice was about 50 wt% of the raw ice. Over 50 wt% of the feed could be recovered as raw ice within 1 h, which means an overall ice recovery rate of higher than 25% (of the original seawater), considering the consumption of washing water. Both artificial and real seawater were tested under the optimized conditions. The total dissolved solid in the product ice was around 300 ppm, which met the World Health Organization (WHO) potable water salinity standard of 500 ppm. Therefore, the process parameters optimized in this study can be directly used for the freeze desalination of seawater.en
dc.description.sponsorshipThe authors would like to thank Singapore National Research Foundation under its Energy Innovation Research Programme for supporting the project entitled, “Using Cold Energy from Re-gasification of Liquefied Natural Gas (LNG) for Novel Hybrid Seawater Desalination Technologies” (Grant number: R-279-000-456-279).en
dc.language.isoenen
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0043135416304845en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Water Research. 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 Water Research, 23 June 2016. DOI: 10.1016/j.watres.2016.06.046en
dc.subjectFreeze desalinationen
dc.subjectLNG cold energyen
dc.subjectSeawater desalinationen
dc.titleFreeze desalination of seawater using LNG cold energyen
dc.typeArticleen
dc.contributor.departmentWater Desalination & Reuse Research Cntren
dc.identifier.journalWater Researchen
dc.eprint.versionPost-printen
dc.contributor.institutionDepartment of Chemical & Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singaporeen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorChung, Neal Tai-Shungen
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