Membrane

The effect of ion beam irradiation on the performance of two commercial water treatment membranes was studied. The results of this testing indicate that the irradiation induced structure modifications had a positive impact on the membranes application to wastewater treatment. Irradiation of the firs

In ultrafiltration (UF) processes, the mass transfer coefficient depends on the hydrodynamic shear at the membrane surface. Unfortunately, in all the existing UF test devices, shear stress is non-uniform and only an average value is used. This paper discusses the theory, design, fabrication, and exp

Membrane surface characterization was studied by contact angles using both a goniometer and a tensiometer. It was checked that static and dynamic advancing contact angles of ultrafiltration membranes with water were in very good agreement. For glycerol and α-bromonaphthalene, dynamic advancing conta

Three-dimensional particles deposition on a filter pore of a track-etched polycarbonate membrane was studied numerically by analyzing forces acting on the depositing particles. The simulation was applied to examine how the morphology of the filter pore affects the deposition of particles on a membra

Adsorption of polymers represents an usual way to modify solid/liquid interfaces for many applications, especially in biotechnology and biomedical applications. For instance, in hemodialysis, the blood/membrane interface could trigger many biochemical systems. We examined the influence of a polyethy

We studied the synthesis and characterization of a thermally stable metal-containing in sulfonated polyimides (M-SPI) based on benzophenone tetracarboxylic dianhydride (BTDA), 4, 4’-diamino 2, 2’-biphenyl disulfonic acid (BDSA) and meta-phenylenediamine (mPDA). X-ray photoelectron spectroscopy (XPS)

A computational model has been developed for the simulation and optimization of the pervaporation process. This model involves solving coupled mass and energy balances, and chemical potential equations using a genetic algorithm. A visual, windows-based, user-friendly design software has been develop

While models of membrane systems with varying degrees of complexity have been developed since the early 1960s, reports of the use of computational fluid dynamics to provide in-depth insights into the separation phenomenon have only recently appeared in the literature. This paper describes the valida

A theoretical study is developed for the modelling of mass accumulation from the polarised layer to the formation of a deposit. Concentrated suspension properties are accounted for through a solid pressure corresponding to osmotic pressure in the suspension and to compression resistance in the depos

An experimental investigation was conducted to study the performance of an aromatic polyamide (ES 20) ultra-lowpressure reverse osmosis membrane (ULPROM) for separating divalent (Cu2+, Ni2+) and hexavalent (Cr6+) heavy metals from bulk solution. The influence of operating pressure, feed concentratio