Sökning: onr:"swepub:oai:lup.lub.lu.se:f887e45f-f9b5-4c9c-ac50-e2d0429bc204" > Influence of pH on ...
Fältnamn | Indikatorer | Metadata |
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000 | 03806naa a2200469 4500 | |
001 | oai:lup.lub.lu.se:f887e45f-f9b5-4c9c-ac50-e2d0429bc204 | |
003 | SwePub | |
008 | 160401s2000 | |||||||||||000 ||eng| | |
009 | oai:DiVA.org:ri-26894 | |
024 | 7 | a https://lup.lub.lu.se/record/39156882 URI |
024 | 7 | a https://doi.org/10.1016/S0376-7388(99)00212-42 DOI |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-268942 URI |
040 | a (SwePub)lud (SwePub)ri | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a art2 swepub-publicationtype |
072 | 7 | a ref2 swepub-contenttype |
100 | 1 | a Brinck, Ju RISE,YKI – Ytkemiska institutet4 aut |
245 | 1 0 | a Influence of pH on the adsorptive fouling of ultrafiltration membranes by fatty acid |
264 | 1 | c 2000 |
500 | a A1384 | |
520 | a Fatty acids are found in many solutions treated in ultrafiltration plants, for example, in dairy products, fermentation broth, oily waste water and bleach plant effluents from pulp mills. The influence of fatty acids on the fouling of membranes is often ignored because their concentration is rather low. However, during recent years the significant influence of fatty acids on the flux reduction of ultrafiltration membranes has attracted much attention. The pore radius of the membrane, the concentration of fatty acids and the pH of the solution all have a profound influence on the flux reduction when treating solutions containing fatty acids. In the work presented in this paper, the influence of pH on the flux reduction of an ultrafiltration membrane made of polyethersulphone was studied. It was found that there was no flux reduction under alkaline conditions, whereas the flux reduction under acidic conditions was severe. In order to elucidate the adsorption process, the adsorption of octanoic acid on a planar, hydrophobized silica surface was studied by means of in situ null ellipsometry. In the ellipsometry study a sharp increase in the amount adsorbed was observed when the concentration of undissociated acid approached the saturation concentration as the pH was decreased. This explains the observed flux reduction under acidic conditions. (C) 2000 Elsevier Science B.V. All rights reserved. | |
650 | 7 | a TEKNIK OCH TEKNOLOGIERx Kemiteknik0 (SwePub)2042 hsv//swe |
650 | 7 | a ENGINEERING AND TECHNOLOGYx Chemical Engineering0 (SwePub)2042 hsv//eng |
650 | 7 | a NATURVETENSKAPx Kemix Fysikalisk kemi0 (SwePub)104022 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Chemical Sciencesx Physical Chemistry0 (SwePub)104022 hsv//eng |
653 | a fouling | |
653 | a adsorption | |
653 | a fatty acid | |
653 | a capillary-induced phase separation | |
653 | a pH | |
653 | a ultrafiltration membrane | |
653 | a Fouling | |
700 | 1 | a Jönsson, Ann-Sofiu Lund University,Lunds universitet,Avdelningen för kemiteknik,Institutionen för processteknik och tillämpad biovetenskap,Institutioner vid LTH,Lunds Tekniska Högskola,Division of Chemical Engineering,Department of Process and Life Science Engineering,Departments at LTH,Faculty of Engineering, LTH4 aut0 (Swepub:lu)kat-ajo |
700 | 1 | a Jönsson, Bengtu Lund University,Lunds universitet,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH4 aut0 (Swepub:lu)fk1-bjo |
700 | 1 | a Lindau, J4 aut |
710 | 2 | a RISEb YKI – Ytkemiska institutet4 org |
773 | 0 | t Journal of Membrane Scienceg 164:1-2, s. 187-194q 164:1-2<187-194x 0376-7388x 1873-3123 |
856 | 4 | u http://dx.doi.org/10.1016/S0376-7388(99)00212-4y FULLTEXT |
856 | 4 8 | u https://lup.lub.lu.se/record/3915688 |
856 | 4 8 | u https://doi.org/10.1016/S0376-7388(99)00212-4 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-26894 |
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