By a News Reporter-Staff News Editor at Journal of Technology -- Current study results on Membrane Science have been published. According to news reporting out of Hamburg, Germany, by VerticalNews editors, research stated, "The fouling behavior of different NOM fractions in combination with two micro-particles (0.5-10 mu m and -45 mu m) 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."
Our news journalists obtained a quote from the research from Technical University, "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."
According to the news editors, the research concluded: "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-DFX mixture in the presence of different particles, as compared with that by HA alone."
For more information on this research see: Effect of particle size and concentration on the synergistic UF membrane fouling by particles and NOM fractions. Journal of Membrane Science, 2013;446():1-9. Journal of Membrane Science can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Membrane Science - www.elsevier.com/wps/product/cws_home/502692)
Our news journalists report that additional information may be obtained by contacting J.Y. Tian, Technical Univ Hamburg, Inst Water Resources & Water Supply, D-21073 Hamburg, Germany. Additional authors for this research include M. Ernst, F.Y. Cui and M. Jekel.
Keywords for this news article include: Europe, Hamburg, Germany, Membrane Science
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