Interdependence of Contributing Factors Governing Dead-End Fouling of Nanofiltration Membranes.

ABSTRACT: Cake-enhanced concentration polarization (CECP) has been ascribed as the main cause of flux decline in dead-end filtration. An unfamiliar approach was used to investigate the role of CECP effects in the fouling of a nanofiltration membrane (NF-270) that poorly reject salts. Membrane-foulant affinity interaction energies were calculated from measured contact angles of foulants and membrane coupons based on the van der Waals/acid-base approach, and linked to resistance due to adsorption (Ra). In addition, other fouling mechanisms and resistance parameters were investigated using model organic and colloidal foulants. After selection, the foulants and membranes were characterized for various properties, and fouling experiments were conducted under controlled conditions. The fouled membranes we

SUBMITTER: Mahlangu OT 

PROVIDER: S-EPMC7827496 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature