RT info:eu-repo/semantics/article
T1 Automated liquid–liquid displacement porometry (LLDP) for the non-destructive characterization of ultrapure water purification filtration devices
A1 Peinador Dávila, René Israel
A1 Darbouret, Daniel
A1 Paragot, Christophe
A1 Calvo Díez, José Ignacio
K1 Water - Purification
K1 Agua - Depuración
K1 Membranes (Technology)
K1 Membrane separation
K1 Separación (Tecnología)
K1 Pore size distribution
K1 Filters and filtration
K1 Electron microscopy
K1 Microscopy
K1 Liquid–Liquid Displacement Porometry
K1 Porometría de desplazamiento líquido-líquido
K1 2210.19 Fenómenos de Membrana
K1 3328.10 Filtración
K1 2203.04 Microscopia Electrónica
K1 2301.12 Microscopia
AB This scientific publication presents a novel modification of the liquid–liquid displacement porosimetry (LLDP) method, aiming for the non-destructive automated analysis of water purification membrane filtration devices in the microfiltration (MF) and ultrafiltration (UF) range. The technical adaptation of LLDP enables the direct in-line porosimetric analysis of commercial filtration devices, avoiding the filtration devices’ destruction. Six commercially available filtration devices with polyethersulfone (PES) and polysulfone (PS) membranes were studied using an improved device developed by the IFTS, which was based on a commercial LLDP instrument. The filtration devices were evaluated in three different configurations: flat disks, hollow fibers, and pleated membranes. The results obtained using the proposed method were compared with other characterization techniques, including submicronic efficiency retention, image analysis of scanning electron microscopy (SEM), and gas–liquid displacement porosimetry (GLDP). The comparison of the results demonstrated that the proposed method accurately determined the porosimetric characteristics of the filters. It proved to be a precise technique for the non-destructive in-line evaluation of filter performance, as well as for periodic quality control and the fouling degree assessment of commercial filtration devices. This modified LLDP approach offers significant potential for the advanced characterization and quality assessment of water purification membrane filtration devices, contributing to improved understanding and optimization of their performance.
PB MDPI
SN 2077-0375
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/68543
UL https://uvadoc.uva.es/handle/10324/68543
LA eng
NO Membranes, 2023, Vol. 13, Nº. 7, 660
NO Producción Científica
DS UVaDOC
RD 08-jul-2024