Marek Bryjak - Academia.edu (original) (raw)

Papers by Marek Bryjak

Polish Journal of Chemical Technology, 2003

Biophysics of Membrane Transport, 1988

Separation and Purification Technology, Mar 1, 2017

Pervap™ 2200, 2201, 2216, 2255, and 2510 hydrophilic, PVA membranes were investigated in pervapor... more Pervap™ 2200, 2201, 2216, 2255, and 2510 hydrophilic, PVA membranes were investigated in pervaporation of water-tetrafluoropropanol mixtures. Physicochemical properties of membranes were characterized by determining the contact angle (CA) of water and glycerol and the surface free energy (SFE). The separation and transport properties of membranes were determined during vacuum pervaporation in contact with water-TFP mixtures containing up to 22 wt.% water. It was found that all membranes were hydrophilic (CA < 90°) and the polar component of SFE was much higher than the dispersive one. The apparent activation energy for water transport was very high (Eapp = 81.3 kJ/mol), indicated that water transport is activated thermally. Pervap™ membranes were very selective during the dehydration process of TFP. In contact with the Pervap™ 2200, 2201, and 2216 permeate contained practically pure water, regardless the feed composition. The process separation index (PSI) for Pervap™ 2200 and 2216 was close to 5000 kg m−2 h−1, suggesting that both membranes can be efficiently applied in the batch pervaporation process for TFP dehydration.

Wiadomości Chemiczne, Oct 15, 2021

The short review describes typical surfactants used for micelle enhanced ultrafiltration (MEUF). ... more The short review describes typical surfactants used for micelle enhanced ultrafiltration (MEUF). Concerning the kind of pollutant that has to be removed from aqueous solutions, different surface-active species can be applied. However, to get the efficient separation two bodies have to be selected: a specific surfactant and an ultrafiltration membrane. Each procedure has its own rules to be fulfilled.

Biophysics of Membrane Transport, 1990

Frontiers in Membrane Science and Technology, May 18, 2022

Innovative Materials and Methods for Water Treatment, 2016

This paper relates e ectiveness of membrane enhanced drying process to rheology of yeast suspensi... more This paper relates e ectiveness of membrane enhanced drying process to rheology of yeast suspension. It describes relations of suspension viscosity with respect to the cell concentration, temperature, and shear rate. The collected data prove that the rheological behaviour is very complicated and depends on the three variables studied. It is demonstrated that transition from shear-thinning to shear-thickening phenomenon is mostly temperature-controlled and attributed to highly concentrated suspension only. At 30oC, a suspension with unexpectedly low viscosity was found which triggered the search for process parameters that allow keeping low values of suspension viscosity.

Polish Journal of Applied Chemistry, 2011

Polish Journal of Chemistry, 1998

Wiadomości Chemiczne, 2021

Hydrometallurgy, 2017

Amberlite IRA-400 and IRA-743 chelating resins for the sorption and recovery of molybdenum(VI) an... more Amberlite IRA-400 and IRA-743 chelating resins for the sorption and recovery of molybdenum(VI) and vanadium(V): Equilibrium and kinetic studies. The address for the corresponding author was captured as affiliation for all authors. Please check if appropriate. Hydrom(2017),

Energy Procedia, 2012

The process of mixing sea and river water can be utilised as a power source. At present, three gr... more The process of mixing sea and river water can be utilised as a power source. At present, three groups of technology are established for doing so; i) mechanical; Pressure Retarded Osmosis PRO, ii) electrochemical reactions; Reverse ElectroDialysis (RED) and Nano Battery Electrodes (NBE) and iii) ultra capacitors; Capacitive Double Layer Expansion (CDLE) and Capacitors charge by the Donnan Potentials (CDP). The chemical potential for salt gradient power systems is only limited by the feed solution concentrations and is the same for all types of salt power branches, but the electric work to the grid, however, relies on the route of conversion and means chosen therein. The CAPMIX project is a joint project to develop and explore ultra capacitors for doing so. Ultra-capacitor materials can interact with sea and river water in order to be deployed as an electricity source. The author consortium is currently exploring two routes to extract the potential free energy from mixing sea and river water by such means. These two routes are the Capacitive Double Layer Expansion (CDLE) and Capacitors charge by the Donnan Potentials (CDP), which are both recently reported, since 2009. The denominator of the two processes is the porous carbon capacitors constituting the capacitors where the chemical energy is converted into electric energy (current). The CDP differs from the CDLE mainly because it includes the use of membranes in addition to the capacitor materials.

Journal of colloid and interface science, Jan 15, 2014

The "capacitive mixing" (CAPMIX) is one of the techniques aimed at the extraction of en... more The "capacitive mixing" (CAPMIX) is one of the techniques aimed at the extraction of energy from the salinity difference between sea and rivers. It is based on the rise of the voltage between two electrodes, taking place when the salt concentration of the solution in which they are dipped is changed. We study the rise of the potential of activated carbon electrodes in NaCl solutions, as a function of their charging state. We evaluate the effect of the modification of the materials obtained by adsorption of charged molecules. We observe a displacement of the potential at which the potential rise vanishes, as predicted by the electric double layer theories. Moreover, we observe a saturation of the potential rise at high charging states, to a value that is nearly independent of the analyzed material. This saturation represents the most relevant element that determines the performances of the CAPMIX cell under study; we attribute it to a kinetic effect.

IOP conference series, Oct 1, 2017

Due to growing demand for production of safe water a search of new materials for water purificati... more Due to growing demand for production of safe water a search of new materials for water purification is of critical issue. Their production should be of low cost and offers easily scalable manufacturing protocol. In this study, we have described preparation and properties of hydrophilic/oleophobic microfiltration membranes produced by means of wire electrospinning. Selective separation of oil or water was tested for oil-water emulsion by using a dead-end filtration unit. The obtained data allowed us to claim membranes as excellent separators for splitting emulsions.