Research Abstracts

These dynamic self-organized systems can be tested in liquid membranes, bilayer membranes, mesoporous structures materials or “frozen” in a polymeric hybrid matrix by sol–gel process, opening the door to the design of a novel class of organic–inorganic nanomembranes. The hybrid membranes successfull

The results have indicated that MF could be an alternative for the pretreatment of indigo dyeing wastewaters. Membranes with pore sizes smaller than 1.2 µm provided relatively low COD but high color rejections. The COD rejections somewhat improved when wastewater pH adjusted to a neutral value.

From the experiments and the mass transfer model the following inferences can be drawn: • The calculated diffusion coefficient of humic acid is in a good agreement with the literature value. • The Mulder-equation in laminar flow regime fits well the ultrafiltration measurements of humic acid contain

Surface modification with hydrophilic polymers is a suitable method to alter the interactions between the membrane surface and feed components resulting in a lower tendency to fouling. Furthermore, the results obtained so far might lead to the conclusion, that the surface modification in particular

[4] for dead-end cake filtration and pore blockage and the model of Fradin and Field [3] for crossflow cake filtration. Although the filterability of activated sludge was determined in a crossflow test cell, we usually observed the mechanism of dead-end cake filtration. The crossflow filtration mech

The micellar-enhanced ultrafiltration of PGM ions has proved to be a promising new technique for the concentration of these ions in an aqueous waste stream under controlled operating conditions. However, the surfactant retention is very dependent on the composition of the feed stream.

Today, the use of the modern synchrotron radiation sources provides several new possibilities to explore a whole set of parameters related to membrane morphology which are important both to characterise membranes towards further applications, but also to better grasp the impact on manufacturing proc

Operating the BF-MBR process with low organic loading rates appears to produce a retentate with more favorable characteristics with respect to dewatering, filterability and sludge production compared to high loading rates. Lower membrane fouling rates are also observed, i.e. less frequent cleaning r