Physicochemical pretreatment of seawater : foulingreduction and membrane characterization
Identifieur interne : 008163 ( Main/Exploration ); précédent : 008162; suivant : 008164Physicochemical pretreatment of seawater : foulingreduction and membrane characterization
Auteurs : H. K. Shon [Australie] ; S. H. Kim [Australie] ; S. Vigneswaran [Australie] ; R. Ben Aim [France] ; Sungyun Lee [Corée du Sud] ; J. Cho [Corée du Sud]Source :
- Desalination : (Amsterdam) [ 0011-9164 ] ; 2009.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
The pretreatment of raw seawater is necessary to minimize the organic fouling of seawater reverse osmosis (SWRO) membranes. To predict the membrane fouling of the pretreated seawater, the modified fouling index (MFI) with ultrafiltration (UF) was investigated in terms of molecular weight distribution (MWD) and membrane characterization. The study was conducted with seawater drawn from Collioure, France. The concentration of total dissolved solids was 32,760 mg/L. The molecular weight (MW) of the initial seawater organic matter (SWOM) ranged from about 14160 Da to 280 Da. FeCl3 flocculation removed the majority of SWOM, while PAC adsorption could not remove the lowest MW fraction of organic matter (1110, 750 and 280 Da). The UF membranes with 30 kDa and 100 kDa MW cut-off removed the majority of of organic matter corresponding to the peaks 14,160 Da and 6560 Da in MWD. The MFI values obtained when using UF membranes of 30 kDa and 100 kDa with MF pretreatment were 19,700 s/L2 and 31,000 s/L2, respectively. The MFI values after pretreatments of FeCl3 flocculation and PAC adsorption significantly decreased to 6900 s/L2 and 6700 for 30 kDa UF and to 2300 s/L2 and 2500 s/L2 for 100 kDa UF, respectively. Some relation does exist for both membranes between the MFI-UF values and Spb values obtained during the first peiod of filtration (pore blocking). The pore blocking zone significantly decreased after flocculation and adsorption pretreatment. This suggests that the pore blocking can be used as an indicator to predict membrane propensity. The detailed membrane characterization on the clean and fouled membrane surface after MFI-UF experiments was made in terms of contact angle, zeta potential, functional group and microscopy.
Affiliations:
- Australie, Corée du Sud, France
- Midi-Pyrénées, Nouvelle-Galles du Sud, Occitanie (région administrative)
- Sydney, Toulouse
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Kim</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Faculty of Engineering, University of Technology</s1><s2>Sydney</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName></affiliation></author><author><name sortKey="Vigneswaran, S" sort="Vigneswaran, S" uniqKey="Vigneswaran S" first="S." last="Vigneswaran">S. Vigneswaran</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Faculty of Engineering, University of Technology</s1><s2>Sydney</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName></affiliation></author><author><name sortKey="Ben Aim, R" sort="Ben Aim, R" uniqKey="Ben Aim R" first="R." last="Ben Aim">R. 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K." last="Shon">H. K. Shon</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Faculty of Engineering, University of Technology</s1><s2>Sydney</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName></affiliation></author><author><name sortKey="Kim, S H" sort="Kim, S H" uniqKey="Kim S" first="S. H." last="Kim">S. H. Kim</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Faculty of Engineering, University of Technology</s1><s2>Sydney</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName></affiliation></author><author><name sortKey="Vigneswaran, S" sort="Vigneswaran, S" uniqKey="Vigneswaran S" first="S." last="Vigneswaran">S. Vigneswaran</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Faculty of Engineering, University of Technology</s1><s2>Sydney</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName></affiliation></author><author><name sortKey="Ben Aim, R" sort="Ben Aim, R" uniqKey="Ben Aim R" first="R." last="Ben Aim">R. Ben Aim</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Université de Toulouse; INSA, UPS, INP; LISBP, 135 Avenue de Rangueil</s1><s2>31077 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>UMR5504: UMR792 Ingénierie des Systèmes Biologiques et des Procédés, CNRS, INRA</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Lee, Sungyun" sort="Lee, Sungyun" uniqKey="Lee S" first="Sungyun" last="Lee">Sungyun Lee</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>NOM, NRL Environmental Science and Technology, Gwangju Institute of Science and Technology</s1><s2>Gwangju</s2><s3>KOR</s3><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Corée du Sud</country><wicri:noRegion>Gwangju</wicri:noRegion></affiliation></author><author><name sortKey="Cho, J" sort="Cho, J" uniqKey="Cho J" first="J." last="Cho">J. Cho</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>NOM, NRL Environmental Science and Technology, Gwangju Institute of Science and Technology</s1><s2>Gwangju</s2><s3>KOR</s3><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Corée du Sud</country><wicri:noRegion>Gwangju</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Desalination : (Amsterdam)</title><title level="j" type="abbreviated">Desalination : (Amst.)</title><idno type="ISSN">0011-9164</idno><imprint><date when="2009">2009</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Desalination : (Amsterdam)</title><title level="j" type="abbreviated">Desalination : (Amst.)</title><idno type="ISSN">0011-9164</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adsorption</term><term>Contact angle</term><term>Desalination</term><term>Electrokinetic potential</term><term>Filtration</term><term>Flocculation</term><term>Fouling</term><term>Indicator</term><term>Membrane separation</term><term>Molecular weight distribution</term><term>Organic matter</term><term>Pretreatment</term><term>Reverse osmosis</term><term>Seawater</term><term>Ultrafiltration</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Prétraitement</term><term>Eau mer</term><term>Encrassement</term><term>Osmose inverse</term><term>Séparation par membrane</term><term>Ultrafiltration</term><term>Distribution masse moléculaire</term><term>Matière organique</term><term>Floculation</term><term>Adsorption</term><term>Filtration</term><term>Indicateur</term><term>Angle contact</term><term>Potentiel électrocinétique</term><term>Dessalement</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The pretreatment of raw seawater is necessary to minimize the organic fouling of seawater reverse osmosis (SWRO) membranes. To predict the membrane fouling of the pretreated seawater, the modified fouling index (MFI) with ultrafiltration (UF) was investigated in terms of molecular weight distribution (MWD) and membrane characterization. The study was conducted with seawater drawn from Collioure, France. The concentration of total dissolved solids was 32,760 mg/L. The molecular weight (MW) of the initial seawater organic matter (SWOM) ranged from about 14160 Da to 280 Da. FeCl<sub>3</sub> flocculation removed the majority of SWOM, while PAC adsorption could not remove the lowest MW fraction of organic matter (1110, 750 and 280 Da). The UF membranes with 30 kDa and 100 kDa MW cut-off removed the majority of of organic matter corresponding to the peaks 14,160 Da and 6560 Da in MWD. The MFI values obtained when using UF membranes of 30 kDa and 100 kDa with MF pretreatment were 19,700 s/L<sup>2</sup> and 31,000 s/L<sup>2</sup>, respectively. The MFI values after pretreatments of FeCl<sub>3</sub> flocculation and PAC adsorption significantly decreased to 6900 s/L<sup>2</sup> and 6700 for 30 kDa UF and to 2300 s/L<sup>2</sup> and 2500 s/L<sup>2</sup> for 100 kDa UF, respectively. Some relation does exist for both membranes between the MFI-UF values and S<sub>pb</sub> values obtained during the first peiod of filtration (pore blocking). The pore blocking zone significantly decreased after flocculation and adsorption pretreatment. This suggests that the pore blocking can be used as an indicator to predict membrane propensity. The detailed membrane characterization on the clean and fouled membrane surface after MFI-UF experiments was made in terms of contact angle, zeta potential, functional group and microscopy.</div></front></TEI><affiliations><list><country><li>Australie</li><li>Corée du Sud</li><li>France</li></country><region><li>Midi-Pyrénées</li><li>Nouvelle-Galles du Sud</li><li>Occitanie (région administrative)</li></region><settlement><li>Sydney</li><li>Toulouse</li></settlement></list><tree><country name="Australie"><region name="Nouvelle-Galles du Sud"><name sortKey="Shon, H K" sort="Shon, H K" uniqKey="Shon H" first="H. K." last="Shon">H. K. Shon</name></region><name sortKey="Kim, S H" sort="Kim, S H" uniqKey="Kim S" first="S. H." last="Kim">S. H. Kim</name><name sortKey="Vigneswaran, S" sort="Vigneswaran, S" uniqKey="Vigneswaran S" first="S." last="Vigneswaran">S. Vigneswaran</name></country><country name="France"><region name="Occitanie (région administrative)"><name sortKey="Ben Aim, R" sort="Ben Aim, R" uniqKey="Ben Aim R" first="R." last="Ben Aim">R. Ben Aim</name></region><name sortKey="Ben Aim, R" sort="Ben Aim, R" uniqKey="Ben Aim R" first="R." last="Ben Aim">R. Ben Aim</name></country><country name="Corée du Sud"><noRegion><name sortKey="Lee, Sungyun" sort="Lee, Sungyun" uniqKey="Lee S" first="Sungyun" last="Lee">Sungyun Lee</name></noRegion><name sortKey="Cho, J" sort="Cho, J" uniqKey="Cho J" first="J." last="Cho">J. Cho</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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