Research Abstracts

The aim of the presented work was the investigation on the possibility of application of the hybrid photocatalysis/membrane processes system for removal of azo dyes (Acid Red 18, Direct Green 99 and Acid Yellow 36) from water. The photocatalytic reactions were conducted in the flow reactor with immo

The paper discusses the method of preparation poly(styrene-co -divinylbenzene) microspheres by means of membrane emulsification (ME). Two-step process was evaluated: ME of monomers followed by suspension polymerization. The effects of changing some emulsification parameters as well as polymerization

This study focused on the removal of toluene from the wastewaters of the chemical industry. The tests were carried out on a polydimethylosiloxane (PDMS) membrane filled with carbon black (PDMS'/cb) and another without the filling (PDMS). It was confirmed, that the addition of the hydrophobic filling

The transport properties of hybrid membranes based on polyvinylchloride (PVC) was studied for the separation of Toluene Á n -Heptane mixtures by pervaporation (PV). Aromatic-alkane mixtures are difficult to fractionate by conventional processes and PV has already been shown as a promising technology

Copper rejections of a nanofiltration (NF) and a reverse osmosis (RO) membrane are investigated with coppersulfate and copper-nitrate solutions as test wastewaters. The copper content of the solutions represents the typical copper ion concentration of process waters from a textile coating plant, i.e

In this work, our methodology proposed earlier for the modelling of pervaporation is applied. The modified Rautenbach model is selected again, as an integral part of our methodology. The applicability of the methodology is investigated in the case of ternary mixtures: the connections between the mod

Fixed-site-carrier (FSC) membranes for CO2 capture were prepared and investigated using commercial high molecular weight polyvinyl amine (PVAm) casted on two polysulfone (PSf) supports with different molecular weight cut-off (20,000 and 50,000). Using humidified premixed gas (10 mol% CO2, 90 mol% N2

Retention properties of a nanofiltration ceramic membrane were investigated with single polyethyleneglycol (PEG) solutions and mixed PEG/inorganic salt solutions. The rejection rate of PEGs was found to decrease in the presence of ions. It was shown that the effect of ions on the retention of neutra

Polymeric membrane flat sheets as well as hollow fibres are widely used in membrane bioreactors in order to separate biologically cleaned water from suspended solids. The polysulfone (PS) flat sheet and polyethersulfone (PES) hollow fibre membranes have been chosen for characterization and to invest

The transport of phosphoric and hydrochloric acids through anion-exchange membrane Neosepta AFN in a counter-current continuous dialyzer has been investigated. The basic transport characteristics of membrane/ solution systems * the overall dialysis coefficient and the permeability of the membrane *