Currently in United States, there are no clinically-applicable hollow fiber extracorporeal membrane oxygenation (ECMO) oxygenators available. Therefore, our laboratory is in the process of developing a silicone hollow fiber membrane oxygenator for long-term ECMO usage. This oxygenator incorporates an ultrathin silicone hollow fiber. At this time, a specially-modified blood flow distributor (one...

 A model is developed for separation of multicomponent gas mixtures in a countercurrent hollow fiber membrane module. While the model’s solution in countercurrent module usually involves in a time consuming iterative procedure, a proper initial guess is proposed for beginning the calculation and a simple procedure is introduced for correcting the guesses, hereby the CPU time is decreased ess...

Membranes with more resilience to abrasive wear are highly desired in water treatment, especially for seawater desalination. Nanocomposite poly(vinylidene fluoride) (PVDF)/nanoclay membranes were prepared by phase inversion and then tested for abrasion resistance. Their material properties were characterized using Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA),...

Dialysis is the single most important therapy for chronic kidney disease. However, protein adsorption onto hemodialysis membranes promotes clot formation. The aim of the present study was to develop a surface-modified membrane which suppresses protein adsorption. Using plasma polymerization, hydrophilic N-vinyl pyrrolidone (VP) and acryloyl morpholine (ACMO) were polymerized on hydrophobic poly...

Composite membranes were successfully prepared using a phase-inversion method. The X-ray powder diffraction (XRD) and energy dispersive X-ray (EDX) profiles has confirmed formation of 4.8 wt % Ag/poly(vinylidene fluoride-co-hexafluoropropene) (PVDF-HFP), 3 wt % Ag-MWCNTs/PVDF-HFP (EDX surface composition of Ag nanoparticles) and 1.5 wt % MWCNTs/PVDF-HFP composite membranes. The MWCNTs crystalli...

the surface properties of tio2-pvdf nanocomposite membranes were investigated by incorporating different chemically modified tio2 nanoparticles into the poly (vinylidene fluoride) (pvdf) matrix. the nanocomposite membranes were prepared via dual coagulation bath diffusion and the induced phase inversion method. the membrane surface morphologies were investigated by using sem and afm and related...

The removal of boron from aqueous solution by direct contact membrane distillation (DCMD) was studied with self-prepared polyvinylidene fluoride (PVDF) hollow fiber membranes in the present work. The effect of pH, boron concentration, temperature and salt concentration of the feed solution on the boron rejection was investigated. The experimental results indicated that boron rejection was less ...

Membrane separation is known as an efficient technique for the oily wastewater treatment. Therefore, in the present study, sulfonated poly (ether ether ketone) (SPEEK) was introduced into the polysulfone (PSF) solution in order to enhance the hydrophilicity and the membrane structure for the oil–water separation. The hollow fiber membranes were fabricated via a phase-inversion process. The memb...

short): Hollow-core Optical Fiber Gas LASer (HOFGLAS) have been created, and explored in pulsed mode with C2H2 and HCN gas inside the hollow core of a kagome structured photonic crystal fiber, and nearideal efficiencies were realized for wavelengths near 1.5 μm (pump, 1 ns-pulses) and 3 μm (lasing). Improved fiber loss is realized near 3 μm to <1 dB/m. In addition, a pulsed CO2 waveguide (silve...

For the first time, hollow-fiber liquid-phase microextraction combined with high-performance liquid chromatography-ultraviolet was used to extract trans,trans-muconic acid, in urine samples of workers who had been exposed to benzene. The parameters affecting the metabolite extraction were optimized as follows: the volume of sample solution was 11 mL with pH 2, liquid membrane containing dihexyl...