Application of thin film composite membranes to the membrane aromatic recovery system

Composite hollow fiber membranes with different poly(dimethylsiloxane) intrusions into substrate for phenol removal via extractive membrane bioreactor

“…The use of PDMS composite membranes have been reported to significantly enhance organic transfer in other organic extraction applications such as aqueousaqueous extractive membrane process and membrane aromatic recovery system [18,19]. However, the use of composite membrane and its systematic performance study in EMBR have not been reported so far.…”

Positively charged nanofiltration membrane formed by interfacial polymerization of 3,3′,5,5′-biphenyl tetraacyl chloride and piperazine on a poly(acrylonitrile) (PAN) support

“…Polyamide (PA) composite membranes have been widely used for nanofiltration (NF) because of their high permeation performance. Most of these are prepared by forming thin PA active layers on microporous supports prepared from polysulfone (PSf) [3], polyacrylonitrile [4], or polyetherimide (PEI) [5].…”

On the Design of a 4-End Spiral-Wound L/L Extraction Membrane Module

“…The production of polycarbonate yields a process water loaded with phenols. , Phenols may be extracted from the process water with caustic soda as stripping solvent. ,,, To avoid mixing of the aqueous stripping medium and the process water, both streams are kept separated by a dense hydrophobic membrane. Phenol in its neutral form dissolves in the membrane and is thus able to permeate from the feed to the permeate channel.…”

“…Thereafter, spiral-wound modules equipped with copper foil (instead of membranes) are used for studying the overall mass transfer performance of different permeate channel designs. At the copper surface a reaction takes place whose rate is limited by the transport of reactants from the fluid bulk toward the copper surface. , A module equipped with a silicone-type membrane is finally designed and built according to previous findings and applied to the liquid–liquid reactive extraction of phenol − because of its inherent operational complexity.…”