Thermo-physical properties of silica gel for adsorption desalination cycle

Handle URI:
http://hdl.handle.net/10754/564686
Title:
Thermo-physical properties of silica gel for adsorption desalination cycle
Authors:
Thu, Kyaw; Chakraborty, Anutosh; Saha, Bidyut Baran; Ng, Kim Choon ( 0000-0003-3930-4127 )
Abstract:
Thermo-physical properties, surface characteristics and water vapor uptake capacity are key parameters in the selection of adsorbent for an adsorption desalination (AD) cycle. In the AD cycles, silica gel is used as adsorbent due to their high water vapor uptake capacity, reliability, repeatability and inexpensiveness as compared to other adsorbents. Three types of commercially available silica gels (Type-RD 2560,Type-A5BW and Type-A++) are investigated using a surface characteristic analyzer and their thermo-physical properties are evaluated using several analysis methods. The instrument used in this investigation employs the static volumetric method with liquid Nitrogen at 77 K as the filing fluid. The surface area of each adsorbent is studied using Brunauer-Emmett-Teller (BET) method whilst the pore size distribution (PSD) analysis is conducted with the Non-Local Density Functional Theory (NLDFT). It is observed that the Type-A++ silica gel (granular type) possesses the highest surface area of 863.6 m2/g amongst the three parent silica gels studied. It has a two-maxima or bimodal distribution pattern where the pore diameters are distributed mostly between 10 Å and 30 Å. Water vapor uptake capacity of silica gels are studied with water vapor dosage apparatus and the results show that the Type-A++ silica gel exhibits a highest equilibrium uptake at 537 cm3/g. These thermo-physical properties are essential for the design and the numerical simulation of AD cycles. © 2012 Published by Elsevier Ltd.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Water Desalination & Reuse Research Cntr
Publisher:
Elsevier BV
Journal:
Applied Thermal Engineering
Conference/Event name:
Combined Special Issues: ECP 2011 and IMPRES 2010
Issue Date:
Feb-2013
DOI:
10.1016/j.applthermaleng.2011.09.038
Type:
Conference Paper
ISSN:
13594311
Appears in Collections:
Conference Papers; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorThu, Kyawen
dc.contributor.authorChakraborty, Anutoshen
dc.contributor.authorSaha, Bidyut Baranen
dc.contributor.authorNg, Kim Choonen
dc.date.accessioned2015-08-04T07:12:24Zen
dc.date.available2015-08-04T07:12:24Zen
dc.date.issued2013-02en
dc.identifier.issn13594311en
dc.identifier.doi10.1016/j.applthermaleng.2011.09.038en
dc.identifier.urihttp://hdl.handle.net/10754/564686en
dc.description.abstractThermo-physical properties, surface characteristics and water vapor uptake capacity are key parameters in the selection of adsorbent for an adsorption desalination (AD) cycle. In the AD cycles, silica gel is used as adsorbent due to their high water vapor uptake capacity, reliability, repeatability and inexpensiveness as compared to other adsorbents. Three types of commercially available silica gels (Type-RD 2560,Type-A5BW and Type-A++) are investigated using a surface characteristic analyzer and their thermo-physical properties are evaluated using several analysis methods. The instrument used in this investigation employs the static volumetric method with liquid Nitrogen at 77 K as the filing fluid. The surface area of each adsorbent is studied using Brunauer-Emmett-Teller (BET) method whilst the pore size distribution (PSD) analysis is conducted with the Non-Local Density Functional Theory (NLDFT). It is observed that the Type-A++ silica gel (granular type) possesses the highest surface area of 863.6 m2/g amongst the three parent silica gels studied. It has a two-maxima or bimodal distribution pattern where the pore diameters are distributed mostly between 10 Å and 30 Å. Water vapor uptake capacity of silica gels are studied with water vapor dosage apparatus and the results show that the Type-A++ silica gel exhibits a highest equilibrium uptake at 537 cm3/g. These thermo-physical properties are essential for the design and the numerical simulation of AD cycles. © 2012 Published by Elsevier Ltd.en
dc.publisherElsevier BVen
dc.subjectAdsorptionen
dc.subjectPore size distributionen
dc.subjectSilica gelen
dc.subjectSurface areaen
dc.subjectThermo-physical propertiesen
dc.titleThermo-physical properties of silica gel for adsorption desalination cycleen
dc.typeConference Paperen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentWater Desalination & Reuse Research Cntren
dc.identifier.journalApplied Thermal Engineeringen
dc.conference.nameCombined Special Issues: ECP 2011 and IMPRES 2010en
dc.contributor.institutionDepartment of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singaporeen
dc.contributor.institutionSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singaporeen
dc.contributor.institutionDepartment of Mechanical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka-shi, Fukuoka 819-0395, Japanen
kaust.authorThu, Kyawen
kaust.authorNg, Kim Choonen
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