Reactive Epoxy Nanofiltration Membranes with Disulfide Bonds for the Separation of Multicomponent Chemical Mixtures

Influence of formulated chemical cleaning reagents on the surface properties and separation efficiency of nanofiltration membranes

This study investigated the impact of two caustic and one acidic cleaning formulations (namely MC11, PC98, and MC3, respectively) on the properties and separation efficiency of three different nanofiltration (NF) membranes (namely NF270, NF90 and TFC-SR100). Overall, the impact of chemical cleaning on surface properties and rejection was membrane and cleaning reagent specific. It was driven mos...

Preparation of Novel Thin-Film Composite Nanofiltration Membranes for Separation of Amoxicillin

Several novel composite membranes were prepared to separate and recycle amoxicillin from pharmaceutical wastewater via nanofiltration process. The synthesis of these membranes included three stages: 1- preparation of polysulfone ultrafiltration membranes as a support via phase separation process, 2- modification of its surface by interfacial polymerization as a selective layer (polyamide), and ...

Cellulose Acetate Nanofiltration Membranes for Cadmium Remediation

In this work, cellulose acetate (CA) nanofiltration (NF) membranes were prepared via non-solvent phase inversion technique (NIPS). Polymer concentration was varied from 22 to 25 wt% in order to study its effect on the membrane properties. The fabricated membranes were characterized in terms of morphological analysis using scanning electron microscopy (SEM), contact angle, water content, water p...

Disulfide bonds and the translocation of proteins across membranes.

We are concerned with the mechanisms whereby hydrophilic proteins synthesized in the cytoplasm are translocated across one or two membranes into different cellular organelles. On the basis of a model of the translocation process to be described elsewhere, we propose an explanation of previous findings that the in vitro translocation across the endoplasmic reticulum of secretory proteins of high...

Nanofiltration membranes