Effects of organic solvents on ultrafiltration polyamide membranes for the preparation of oil-in-water emulsions

Physiochemical, antioxidant and whitening properties of extract from root cortices of mulberry as affected by membrane process

“…1 shows the plots of the permeate flux verse time for extracts of root cortices from mulberry clarified with various cut-off size membranes. As expected and resembling other observations (Faibish, Elimelech, & Cohen, 1998;Giorno et al, 2005), permeate flux increased with pore size. For most solution, the fouling layer usually rapidly formed on the membrane surface, leading to a low liquid flux (Todisco, Pena, Driolie, & Tallarico 1996;Vladisavljevic, Vukosavljevic, & Bukvic, 2003).…”

“…However, resistance to the fouling layer treated with microfiltration membrane (a p C B ¼ 622.8 m À2 Â 10 À6 ) was lower than observed treated with ultrafiltration membranes, which resistances (a p C B ) were 981.5, 786.1, 962.6, and 1025.3 m À2 Â 10 À6 for UK 200, UK 50, UP 20, and UK 10 membrane. This behavior resembled to other observations (Faibish et al, 1998;Giorno et al, 2005), which demonstrated that elevated pore size caused less flow resistance and thus achieved the benefit of higher permeation flux.…”

Preparation of emulsions and particles by membrane emulsification for the food processing industry

“…W/o emulsions were successfully prepared using microporous polypropylene hollow fibers (Microdyn module, Wuppertal, Germany) , macroporous silica glass membranes (Fuchigami et al, 2000), polytetrafluoroethylene (PTFE) membranes (Suzuki et al, 1998;Yamazaki et al, 2003), polyamide hollow fibers membrane (Giorno et al, 2003(Giorno et al, , 2005, and home made silica-based monolithic membrane (Hosoya et al, 2005).…”

An innovative approach to improve the performance of a two separate phase enzyme membrane reactor by immobilizing lipase in presence of emulsion

“…(Additional insights about the membrane pre-treatment and methodologies can be found in Ref. [14].) The emulsions were prepared by using a transmembrane pressure of 0.1 bar to disperse the discontinuous phase and an axial velocity of the continuous phase of 5.75 × 10 −5 m/s to collect the droplets.…”

“…The emulsion was prepared by membrane emulsification [13,14]. The droplet size distribution and the stability as a function of time was also determined in order to be sure that during the reactor operation the emulsion did not coalesce.…”