Zhang Y, Causserand C, Aimar P, Cravedi J P
Department of Environmental Science, School of Chemistry and Life Science, ShenYang Normal University, No.253, Huanghe North Street, Shenyang, Liaoning, 110034, PR China.
Water Res. 2006 Dec;40(20):3793-9. doi: 10.1016/j.watres.2006.09.011. Epub 2006 Oct 30.
The efficiency with which a nanofiltration membrane (Desal 5 DK) removes bisphenol A (BPA) was investigated, together with the mechanisms involved. Whereas high retention (>90%) was obtained at the beginning of the filtration, the observed retention coefficient (R(obs)) decreased to around 50% when the membrane became saturated, due to adsorption of BPA onto the membrane structure. The presence of ions (Na+, Cl-) affects the R(obs), this effect being attributed to a change in BPA hydrodynamic radius. Moreover, in our operating conditions, the presence of natural organic matter (1mg/L) in the feed solution does not lead to variation in BPA retention at steady state.
研究了纳滤膜（Desal 5 DK）去除双酚A（BPA）的效率及其相关机制。在过滤开始时可获得较高的截留率（>90%），但当膜饱和时，由于BPA吸附到膜结构上，观察到的截留系数（R(obs)）降至约50%。离子（Na+、Cl-）的存在会影响R(obs)，这种影响归因于BPA流体动力学半径的变化。此外，在我们的操作条件下，进料溶液中天然有机物（1mg/L）的存在不会导致稳态下BPA截留率的变化。
