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  • Title: Removal of bisphenol A by a nanofiltration membrane in view of drinking water production.
    Author: Zhang Y, Causserand C, Aimar P, Cravedi JP.
    Journal: Water Res; 2006 Dec; 40(20):3793-9. PubMed ID: 17074381.
    Abstract:
    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.
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