Research Abstracts

Monolithic polymers are suitable polymeric supports for the covalent immobilization of enzymes with high efficiency. The enzymatic activity of the membranes increases with the amount of crosslinker (EDMA) because of the increase of the surface of the polymer and therefore the amount of enzyme immobi

The developed black membrane slide provides an outstanding detectable concentration range in fluorescence analysis of proteins. The low background signal of the black membrane slide allows to collect signal intensity not only from the surface but also from the depth of the microporous structure. The

The conjectured development of early biological membranes is outlined and their properties reviewed. It is suggested the mimicking such early structures could lead to the development of new types of highly selective membranes.

Protein fractionation using ultrafiltration is feasible after extensive process optimization, yet the poor selectivity of membranes is still one of the critical factors limiting the application of membrane systems to protein fractionation. Our present work on protein fractionation uses sandwich ultr

(2) where C0V0 = CiVi = CfVf. Predictions from Eqs. (1) and (2) are given in Fig. 2. The calculations were performed at various values of the microsolute reduction ratio. The volume reduction ratio, V0/Vf was 40 and CA0 was equal to (Cg/e)/20. To illustrate the findings, we note that if VVD is perfo

1.5 g/L 0.3 g/L Fig. 4. Profile of the deposit at the end of filtrations. Moreover local informations on cake properties will be discussed in relation with global parameters like irreversible resistance and specific cake resistance versus the operating conditions. Comparison of global and local spec

A theoretical model to predict the porosity and specific resistance of cake layer was developed for better understanding a coagulation-microfiltration system for drinking water production. The model was based on fractal theory and incorporated intra-floc and inter-floc porosities as well as cake col

The aim of this study was to evaluate the stability of the RC ultrafiltration membranes C 30FM and C2 in filtration at high temperatures. The results obtained until now showed that no drastic changes in the membranes and their pure water permeabilities could be observed after a few days of filtratio

Membranes working as nucleating heterogeneous phases for protein crystallization were tailored. Perfluorinated membranes were functionalised by anchoring amphiphilic sulfonamides onto the membrane surface, resulting in enhanced affinity to protein solutions. Although the amount of the sulphonamide m