Removal of bisphenol A by a nanofiltration membrane in view of drinking water production.
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.
Zhang
Y
Y
Department 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
Causserand
C
C
Aimar
P
P
Cravedi
J P
JP
D000327:Adsorption; D001559:Benzhydryl Compounds; D052244:Endocrine Disruptors / Q000737:chemistry / Q000302:isolation & purification*; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification*; D014462:Ultrafiltration; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods; D014881:Water Supply; D000098826:Bisphenol A Compounds
D001559:Benzhydryl Compounds; D052244:Endocrine Disruptors; D010636:Phenols; D014874:Water Pollutants, Chemical; C006780:bisphenol A; D000098826:Bisphenol A Compounds