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Published on: February 13, 2016
Removal of bisphenol A by a nanofiltration membrane in view of drinking water production
Y Zhang1, C Causserand, P Aimar
1Department of Environmental Science, School of Chemistry and Life Science, ShenYang Normal University, No.253, Huanghe North Street, Shenyang, Liaoning, 110034, PR China. zywjb1975@hotmail.com
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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