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Research Conducted at Hohai University Has Updated Our Knowledge about Membrane Science

May 27, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- Current study results on Membrane Science have been published. According to news reporting from Jiangsu, People's Republic of China, by VerticalNews journalists, research stated, "The extended Derjaguin-Landau-Vervvey-Overbeek (XDLVO) approach was used to predict the mechanisms and control of membrane fouling in an initial ultrafiltration (UF) phase. The polymeric UF membranes made of polyvinylchloride (PVC) -were selected to investigate membrane fouling, by means of filtering water samples that differed in terms of organic colloid composition and pl-l."

The news correspondents obtained a quote from the research from Hohai University, "Results indicated that membrane fouling was ameliorated as the total interaction energy increased. Van der Waals (LW) interaction energy predominated when the distance between the membrane surface and organic colloids was > 5 net while short-range acid-base (AB) interaction energy was a key contributor to total interaction energy over short distances (< 2.5 nm). The size of colloids was the lowest in the water sample with a humic acid (HA)/fulvic acid (FA) ratio of 1:2. This sample also had the highest negative interaction energy, indicating that it had the lightest level of membrane fouling. Increased pH resulted in an increase in total interaction energy, which alleviated membrane fouling."

According to the news reporters, the research concluded: "Prechlorination resulted in an increase in total interaction energy of the water sample, indicating that the use of feed wafer (for ultrafiltration) that had been pre-oxidized using chlorine, could reduce membrane fouling, due to characteristic changes in organic matter."

For more information on this research see: Interaction mechanisms and predictions on membrane fouling in an ultrafiltration system, using the XDLVO approach. Journal of Membrane Science, 2014;461():49-58. Journal of Membrane Science can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier -; Journal of Membrane Science -

Our news journalists report that additional information may be obtained by contacting T. Lin, Hohai University, Coll Environm, Nanjing 210098, Jiangsu, People's Republic of China. Additional authors for this research include Z.J. Lu and W. Chen.

Keywords for this news article include: Asia, Jiangsu, Membrane Science, People's Republic of China

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Source: Journal of Technology

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