Performance of Layer-by-Layer-Modified Multibore Ultrafiltration Capillary Membranes for Salt Retention and Removal of Antibiotic Resistance Genes.

Polyether sulfone Multibore ultrafiltration membranes were modified using polyelectrolyte multilayers via the layer-by-layer (LbL) technique in order to increase their rejection capabilities towards salts and antibiotic resistance genes. The modified capillary membranes were characterized to exhibit a molecular weight cut-off (at 90% rejection) of 384 Da. The zeta-potential at pH 7 was -40 mV.