Hollow fiber

Microporous asymmetric PVDF hollow fiber membranes were prepared from commercially available polyvinylidenefluoride and N,N-dimethylacetamide (DMAc) by the dry-jet wet phase inversion process. Lithium chloride and water were used as additives. Mean pores size and effective surface porosity were eval

PEEK-WC HF bioreactor permits us to reproduce the Hypericum perforatum immunomodulatory effect on human peripheral lymphocytes as observed by previous in vivo studies. In fact, St. John’s wort modulates linfocitary response suppressing metabolic activities. This investigation underlines the ability

Microfiltration of rigid spherical particle suspension in a hollow fiber module operating with inside–out flow, at a constant module inlet flow rate, was simulated using the shear-induced hydrodynamic diffusion model of Mondor and Moresoli, with consideration of the axial variation of the pressure d

A mathematical model has been developed to simulate the performance of an integrated extraction-stripping process based on the use of hollow fiber contactors. The model allows one to predict the time-dependent concentration profiles of the two phases involved in an individual extraction or stripping

The most common reverse osmosis (RO) membranes which attained the stage of economic application in desalination plants are made of cellulose acetate (CA) or polyamide (PA), in either hollow fiber (HF) or spiral wound (SW) configurations. The first application problem of CA membrane is its sensitivit

Economical feasibility of xylitol production by microorganisms depends directly on the efficiency of conversion and productivity. A potential alternative to ensure this objective is continuous bioconversion. Xylitol production and separation methodology by a biotechnological route using the benefits

The development of concentration boundary layer (CBL) inside the hollow fibers, based on the experimental data from membrane-based solvent extraction of thallium (III) from chloride-containing acidic solutions with butyl acetate, was investigated. The experiments have been performed using three labo

D,L-lactic acid and D,L-alanine solutes resolution was studied in supported liquid membrane using a polypropylene hollow-fiber module. The enantioselective transport of solutes was facilitated by N-3,5-dinitrobenzoyl-L-alanineoctylester chiral selector, which was dissolved in toluene organic solvent

In this paper the effect of different SRT on the performances of an ultrafiltration pilot MBR operating with real wastewaters was tested to analyse both the ability of the system to remove nutrients and micropollutants and the possible decrease in waste sludge production. Increasing MLSS from 4 to 9