Zeszyt / Issue 21 (2017)

The enrichment of ventilation air methane by membrane separation

Authors: Manfred Jaschik, Marek Tańczyk, Artur Wojdyła, Aleksandra Janusz-Cygan, Krzysztof Warmuziński, Elżbieta Sołtys

Keywords: membrane separation, commercial membrane modules, ventilation air methane (VAM)

Abstract: The basic aim of this study was to analyze the possibility of using commercial membrane modules in the recovery of methane from ventilation air. Experimental investigations concerning the separation of gaseous mixture containing 0.3 vol.% of methane in nitrogen were carried out. However, no satisfactory increase in methane concentration was observed in the product in a single-step installation. Therefore, a multi-step membrane system was proposed with UMS-A5 module. It was found that the developed mathematical model can be used for design calculations and optimization in the enrichment of lean methane-nitrogen mixtures.

Theory of multicomponent diffusion in fluid systems. Part II. Applications of the constitutive equations of multicomponent diffusion

Authors: Andrzej Burghardt

Keywords: mechanical theory of diffusion, constitutive equations, driving forces of diffusion

Abstract: The constitutive equations of multicomponent diffusion derived in the first part of the study [1] basing of the mechanical theory of diffusion are applicable to any isotropic fluid mixture like gases under low and high pressure, liquids, electrolyte and polymeric solutions as well as plasma. Therefore in this (second) part of the study examples of application of the theoretical expressions derived in the first part are presented with respect to the fluid systems mentioned above.

Effective palladium-functionalized catalysts for Suzuki coupling reaction

Authors: Agnieszka Ciemięga, Katarzyna Maresz, Janusz J. Malinowski, Julita Mrowiec-Białoń

Keywords: Suzuki coupling reaction, hierarchical materials, monolithic microreactor

Abstract: Effective heterogeneous catalysts for the Suzuki coupling reaction have been prepared. Catalysts based on silica monoliths with hierarchical pore structure and SBA-15 modified with palladium organic complexes. Transmission electron microscopy (TEM), nitrogen physical adsorption, thermogravimetry (TG) and Fourier transform infrared (FTIR) studies have been used to characterize the materials. Catalysts exhibited high activity for Suzuki coupling reaction of iodobenzene with phenylboronic acid. The flow microreactor showed stability of catalytic properties with an average conversion of 96%.

Methods of air purification intensification in the trickle-bed bioreactor

Authors: Agnieszka Gąszczak, Rafał Sarzyński, Hanna Kolarczyk, Grażyna Bartelmus

Keywords: trickle-bed bioreactor, VOCs, air purification

Abstract: The review of the latest literature data related to the biodegradation of volatile organic compounds and the removal of odors in trickle-bed bioreactors were performed. The basic parameters that affect the course of the process and determine the effective and stable operation of the installation were pointed out. Technological solutions to improve the efficiency of the bio-purification process, especially in relation to the hydrophobic substances polluting the air, were presented.

Separation of gas mixture on ionic liquid membranes with ceramic support

Authors: Adam Rotkegel, Zenon Ziobrowski

Keywords: CO2 removal, SILM Membrane, ionic liquids

Abstract: The paper presents the review of works concerning gas mixture separation, in particular a CO2 removal from gases, using liquid membrane on ceramic support impregnated with ionic liquids (SILM). The type of ceramic support used in SILM membranes, as well as the influence of the support structure on the quality of the membrane was discussed. The methods used to impregnate the ionic liquid into the ceramic support were shown.

Liquid axial mixing in solid foams

Authors: Anna Gancarczyk, Katarzyna Sindera, Marcin Piątek, Marzena Iwaniszyn, Mateusz Korpyś, Mieczysław Jaroszyński, Bożena Janus, Tadeusz Kleszcz, Andrzej Kołodziej

Keywords: solid foam, RTD, axial dispersion coefficient, flow resistance

Abstract: Metal and ceramic solid foams were examined to determine axial dispersion for liquids (water and 45% glycerol solution) single phase flow; the results obtained for the packed bed of spheres were used for comparison. The influence of the liquid viscosity on axial dispersion was tested. Moreover, flow resistance was also measured.

The investigation of activity the bimetallic catalysts based on nicel oxide, cobalt oxide, cerium oxide in ethanol steam reforming (ESR)

Authors: Maria Madej-Lachowska, Henryk Moroz, Hildegarda Wyżgoł, Łukasz Hamryszak



Carbon dioxide absorption in ionic liquids [emim][AC] and [bmim][AC]

Authors: Zenon Ziobrowski, Adam Rotkegel, Marek Tańczyk, Roman Krupiczka

Keywords: absorption, carbon dioxide, ionic liquids

Abstract: The experimental results of equilibrium capacity of carbon dioxide absorption in ionic liquids are presented. [bmim][Ac] and [emim][Ac] ionic liquids were investigated in gravimetric analyser IGA and in bubbling apparatus in temperature range 20-60°C. Measured equilibrium carbon dioxide absorption capacities are comparable with those obtained for 15% aqueous MEA solutions used in industry. High absorption capacities, thermal stability and negligible volatility of investigated ionic liquids may be an alternative for MEA solutions despite of much lower carbon dioxide absorption rate in ionic liquids.

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