naa a22 4500 510748694 CHVBK 20180411083056.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s11270-012-1377-0 doi (NATIONALLICENCE)springer-10.1007/s11270-012-1377-0 Influence of Adsorption of Pharmaceuticals onto RO/NF Membranes on Their Removal from Water [Elektronische Daten] [Davor Dolar, Krešimir Košutić, Danijela Ašperger] Adsorption together with size exclusion and charge attraction/repulsion has to be taken into account when considering removal of pharmaceuticals as emerging contaminants from water by reverse osmosis and nanofiltration membranes. Glucocorticosteroids (hydrocortisone (HYDRO), dexamethasone (DEXA)), anesthetics (procaine, lidocaine) with relatively weak hydrophobicities (1 < log K O/W < 3), and membranes (XLE, LFC-1, CPA3, SWC1, NF90, and NF270) have been investigated in this study. Adsorption was studied by measuring the concentration of compounds in feed and permeate and by monitoring changes in membrane flux in the batch mode operation during 24h. A decrease in the feed concentrations for HYDRO and DEXA (log K O/W < 2) was observed. The loss of these compounds in feed was associated with irreversible adsorption onto an NF270 and a CPA3 membrane. Therefore, when considering removal of pharmaceuticals with lower hydrophobicity, adsorption has to be particularly taken into account for membranes with bigger pores in the selective layer. Also, a high dipole moment and low water solubility affected adsorption on the membranes. For smaller and slightly more hydrophobic pharmaceuticals (log K O/W > 2), an increase in the feed concentration was obtained. Firstly, these compounds instantly adsorbed to the membrane. Secondly, the compounds diffused through the polymer matrix and desorbed to the permeate side after equilibrium had been reached. Springer Science+Business Media Dordrecht, 2013 Adsorption nationallicence Hydrocortisone nationallicence Dexamethasone nationallicence Procaine nationallicence Lidocaine nationallicence RO/NF nationallicence Dolar Davor Department of Physical Chemistry, Faculty of Chemical Engineering and Technology, Marulićev trg 19, HR-10000, Zagreb, Croatia aut Košutić Krešimir Department of Physical Chemistry, Faculty of Chemical Engineering and Technology, Marulićev trg 19, HR-10000, Zagreb, Croatia aut Ašperger Danijela Department of Analytical Chemistry, Faculty of Chemical Engineering and Technology, Marulićev trg 19, HR-10000, Zagreb, Croatia aut Water, Air, & Soil Pollution Springer Netherlands 224/1(2013-01-01), 1-13 0049-6979 224:1<1 2013 224 11270 https://doi.org/10.1007/s11270-012-1377-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-012-1377-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dolar Davor Department of Physical Chemistry, Faculty of Chemical Engineering and Technology, Marulićev trg 19, HR-10000, Zagreb, Croatia aut NATIONALLICENCE 700 1- Košutić Krešimir Department of Physical Chemistry, Faculty of Chemical Engineering and Technology, Marulićev trg 19, HR-10000, Zagreb, Croatia aut NATIONALLICENCE 700 1- Ašperger Danijela Department of Analytical Chemistry, Faculty of Chemical Engineering and Technology, Marulićev trg 19, HR-10000, Zagreb, Croatia aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/1(2013-01-01), 1-13 0049-6979 224:1<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer