Publisher DOI: 10.1016/j.memsci.2013.06.016
Title: Effect of particle size and concentration on the synergistic UF membrane fouling by particles and NOM fractions
Language: English
Authors: Tian, Jia Yu 
Ernst, Mathias  
Cui, Fuyi 
Jekel, Martin 
Keywords: Inorganic particle; NOM fractions; Synergistic membrane fouling; Ultrafiltration (UF) membrane
Issue Date: 21-Jun-2013
Publisher: Elsevier
Source: Journal of Membrane Science (446): 1-9 (2013)
Abstract (english): 
The fouling behavior of different NOM fractions in combination with two micro-particles (0.5-10. μm and ~45. μm) and one nano-particle (5-15. nm) on UF membrane was investigated. Three NOM models, Aldrich humic acid (HA), bovine serum albumin (BSA) and dextran (DEX) were employed as representatives of humic substances, proteins and polysaccharides in natural waters. For all the NOM models, a significant synergistic fouling effect was observed between the organic fraction and the two micro-particles, as evidenced by the proportional increase of fouling resistance with the increase of particle concentration from 10 to 50. mg/L. Whereas at higher particle concentration of 100. mg/L, the synergistic fouling resistance became balanced, or even decreased in comparison with that at 50. mg/L, indicating that there might be a critical concentration range for the micro-particles, in which the particles caused the most pronounced synergistic fouling effect with the NOM fractions. As for the nano-particle of 5-15. nm, much lower synergistic fouling resistance was observed as compared with that of the micro-particles for all the NOM models. This work highlighted the importance of particle size and particle concentration (i.e. mass ratio of particle/NOM) on the combined membrane fouling behavior for UF of natural waters. Besides, the interplay of different NOM fractions in the particle layer also played a crucial role in UF membrane fouling, as demonstrated by the much higher synergistic fouling resistance caused by the HA-BSA-DEX mixture in the presence of different particles, as compared with that by HA alone. © 2013 Elsevier B.V.
ISSN: 0376-7388
Journal: Journal of membrane science 
Institute: Wasserressourcen und Wasserversorgung B-11 
Document Type: Article
Appears in Collections:Publications without fulltext

Show full item record

Page view(s)

Last Week
Last month
checked on Mar 21, 2023


Last Week
Last month
checked on Jun 30, 2022

Google ScholarTM


Add Files to Item

Note about this record

Cite this record


Items in TORE are protected by copyright, with all rights reserved, unless otherwise indicated.