Polysulfone/Polyamide-SiO₂ Composite Membrane with High Permeance for Organic Solvent Nanofiltration.

ABSTRACT: To improve the filtration performance and properties of organic solvent nanofiltration (OSN) membranes, we firstly introduce nanoporous silica (SiO₂) particles into the polyamide (PA) active layer of polysulfone (PSf) membrane via an interfacial polymerization process. Results from the study revealed that introduction of SiO₂ influenced the properties of PSf/PA-SiO₂ composite membranes by changing the surface roughness and hydrophilicity. Moreover, results also indicated that nanoporous SiO₂ modified membranes showed an improved performance of alcohols solvent permeance. The PSf/PA-SiO₂ composite membrane modified by 0.025 wt % of SiO₂ reached a permeance of 3.29 L m-2 h-1 bar-1 for methanol and 0.42 L m-2 h-1 bar-1 for ethanol, which were 20.0% and 13.5% higher than the control PSf membra

SUBMITTER: Liu Q 

PROVIDER: S-EPMC6316106 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature