Research Papers by Wojciech Kujawski

The effectiveness of soil remediation process, consisting of the soil washing, microfiltration and pervaporation process to remove iso-octane (VOC) was investigated. The several different parameters influencing the washing process were investigated: type of the soil (sand and sandy clay), time of th

In this work, we present the relations between the transport coefficients for the system multi-ion solution/ionexchange membrane resulting from the neglecting of ion Á ion interactions. We present one of the possible sets of the practical transport coefficients for that system, and we show how to ob

The results of the present study confirm the viability of applying membrane separation processes to reconcentrate viscous food solutions. Of the membrane contactor techniques investigated, DO (on-site and off-site) and OMD, the last one has the best overall performance as far as water fluxes and sol

In order to avoid hydrophilic behaviour of ceramic membranes prepared with metal oxides, alumina and zirconia membranes with 200 and 50 nm pore diameters were grafted with fluoroalkylsilanes. The grafting was controlled by TGA, and the hydrophobicity was characterised by water contact angle and perm

Application of membrane techniques (pervaporation and membrane-based solvent extraction) and adsorption tothe removal of phenol from solutions modelling wastewater from phenol production by cumene oxidation processwas investigated. The transport and separation properties of composite membranes PEBA,

Aqueous dispersions of siloxane-urethane copolymers (polysiloxaneurethanes) containing 0–49% of siloxane moieties were synthesized by the modified prepolymer-ionomer method. The properties of the dispersions were determined. Dense membranes were prepared from those dispersions by crosslinking with a

Selective and transport properties of an anion-exchange hollow-fiber membrane (Pervasiv Ltd., Israel) were determined in the sweeping gas pervaporation process used for the dehydration of different organic solvents. C2– C4 alcohols (i.e. ethanol — EtOH, propanol — nPrOH, isopropanol — iPrOH, n-butan