Influence of flocculation and adsorption as pretreatment on the fouling of ultrafiltration and nanofiltration membranes : Application with biologically treated sewage effluent
Identifieur interne : 00A584 ( Main/Exploration ); précédent : 00A583; suivant : 00A585Influence of flocculation and adsorption as pretreatment on the fouling of ultrafiltration and nanofiltration membranes : Application with biologically treated sewage effluent
Auteurs : H. K. Shon [Australie] ; S. Vigneswaran [France] ; R. Ben Aim [Australie] ; H. H. Ngo [Australie] ; In S. Kim [Corée du Sud] ; J. Cho [Corée du Sud]Source :
- Environmental science & technology [ 0013-936X ] ; 2005.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Eau usée.
English descriptors
- KwdEn :
Abstract
Membrane fouling is a critical limitation on the application of membranes to wastewater reuse. This work aims to understand the fouling phenomenon which occurs in ultrafiltration (UF; 17500 molecular weight cutoff (MWCO)) and nanofiltration (NF; 250 MWCO) membranes, with and without pretreatment. For this purpose, the molecular weight (MW) distribution of the organics has been used as a parameter to characterize the influent, the permeate, and the foulant on the membrane surface. The variation of foulant concentration on the membrane due to pretreatment of the influent by flocculation and/or adsorption was investigated in detail. With the UF membrane, the peak of the MW distribution of organics in the permeate depended on the pretreatment; for example, the weight-averaged MW (Mw) of 675 without pretreatment shifted down to 314 with pretreatment. In the case of the NF membrane, the Mw of organics in the permeate was 478 (without pretreatment) and 310 (with flocculation followed by adsorption). The Mw of the organics in the foulant on the membrane surface was 513 (UF) and 192 (NF) without pretreatment and 351 (UF) and 183 (NF) after pretreatment with flocculation followed by adsorption, respectively. Without the pretreatment, the foulant concentration was higher on both membranes. The difference was more significant on the UF membrane than on the NF membrane. For both membranes, the flocculation-and-then-adsorption pretreatment proved very effective.
Affiliations:
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K." last="Shon">H. K. Shon</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Faculty of Engineering, University of Technology, Sydney, P.O. Box 123</s1><s2>Broadway, NSW 2007</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Broadway, NSW 2007</wicri:noRegion></affiliation></author><author><name sortKey="Vigneswaran, S" sort="Vigneswaran, S" uniqKey="Vigneswaran S" first="S." last="Vigneswaran">S. Vigneswaran</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institut National des Sciences Appliquees, Complexe Scientifique de Rangueil</s1><s2>31077 Toulouse</s2><s3>FRA</s3><sZ>2 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31077 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</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="1"><inist:fA14 i1="01"><s1>Faculty of Engineering, University of Technology, Sydney, P.O. Box 123</s1><s2>Broadway, NSW 2007</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Broadway, NSW 2007</wicri:noRegion></affiliation></author><author><name sortKey="Ngo, H H" sort="Ngo, H H" uniqKey="Ngo H" first="H. H." last="Ngo">H. H. Ngo</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Faculty of Engineering, University of Technology, Sydney, P.O. Box 123</s1><s2>Broadway, NSW 2007</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Broadway, NSW 2007</wicri:noRegion></affiliation></author><author><name sortKey="Kim, In S" sort="Kim, In S" uniqKey="Kim I" first="In S." last="Kim">In S. Kim</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Water Keuse Technology Center, 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="03"><s1>Water Keuse Technology Center, 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">Environmental science & technology</title><title level="j" type="abbreviated">Environ. sci. technol.</title><idno type="ISSN">0013-936X</idno><imprint><date when="2005">2005</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Environmental science & technology</title><title level="j" type="abbreviated">Environ. sci. technol.</title><idno type="ISSN">0013-936X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Activated carbon</term><term>Adsorption</term><term>Biofilm</term><term>Biofouling</term><term>Biosorption</term><term>Flocculation</term><term>Fouling</term><term>Membrane separation</term><term>Nanofiltration</term><term>Physicochemical purification</term><term>Pretreatment</term><term>Tertiary purification</term><term>Ultrafiltration</term><term>Waste reuse</term><term>Waste water</term><term>Waste water purification</term><term>Water resource management</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Gestion ressource eau</term><term>Réutilisation déchet</term><term>Eau usée</term><term>Epuration eau usée</term><term>Epuration tertiaire</term><term>Epuration physicochimique</term><term>Séparation par membrane</term><term>Ultrafiltration</term><term>Nanofiltration</term><term>Encrassement</term><term>Bioencrassement</term><term>Prétraitement</term><term>Floculation</term><term>Adsorption</term><term>Biosorption</term><term>Biofilm</term><term>Charbon actif</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Eau usée</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Membrane fouling is a critical limitation on the application of membranes to wastewater reuse. This work aims to understand the fouling phenomenon which occurs in ultrafiltration (UF; 17500 molecular weight cutoff (MWCO)) and nanofiltration (NF; 250 MWCO) membranes, with and without pretreatment. For this purpose, the molecular weight (MW) distribution of the organics has been used as a parameter to characterize the influent, the permeate, and the foulant on the membrane surface. The variation of foulant concentration on the membrane due to pretreatment of the influent by flocculation and/or adsorption was investigated in detail. With the UF membrane, the peak of the MW distribution of organics in the permeate depended on the pretreatment; for example, the weight-averaged MW (M<sub>w</sub>) of 675 without pretreatment shifted down to 314 with pretreatment. In the case of the NF membrane, the M<sub>w</sub> of organics in the permeate was 478 (without pretreatment) and 310 (with flocculation followed by adsorption). The M<sub>w</sub> of the organics in the foulant on the membrane surface was 513 (UF) and 192 (NF) without pretreatment and 351 (UF) and 183 (NF) after pretreatment with flocculation followed by adsorption, respectively. Without the pretreatment, the foulant concentration was higher on both membranes. The difference was more significant on the UF membrane than on the NF membrane. For both membranes, the flocculation-and-then-adsorption pretreatment proved very effective.</div></front></TEI><affiliations><list><country><li>Australie</li><li>Corée du Sud</li><li>France</li></country><region><li>Midi-Pyrénées</li><li>Occitanie (région administrative)</li></region><settlement><li>Toulouse</li></settlement></list><tree><country name="Australie"><noRegion><name sortKey="Shon, H K" sort="Shon, H K" uniqKey="Shon H" first="H. K." last="Shon">H. K. Shon</name></noRegion><name sortKey="Ben Aim, R" sort="Ben Aim, R" uniqKey="Ben Aim R" first="R." last="Ben Aim">R. Ben Aim</name><name sortKey="Ngo, H H" sort="Ngo, H H" uniqKey="Ngo H" first="H. H." last="Ngo">H. H. Ngo</name></country><country name="France"><region name="Occitanie (région administrative)"><name sortKey="Vigneswaran, S" sort="Vigneswaran, S" uniqKey="Vigneswaran S" first="S." last="Vigneswaran">S. Vigneswaran</name></region></country><country name="Corée du Sud"><noRegion><name sortKey="Kim, In S" sort="Kim, In S" uniqKey="Kim I" first="In S." last="Kim">In S. Kim</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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