Zeszyt / Issue 18 (2014)

Pharmaceuticals in the aquatic environment

Authors: Anna Szczotka, Agnieszka Gąszczak, Grażyna Bartelmus

Keywords: pharmaceuticals in aquatic systems, ecotoxicological risk

Abstract: The key issues concerning the presence of pharmaceuticals in the aquatic environment are presented. The most important pathways of drugs entering aquatic ecosystems, problems associated with ecotoxicolog-ical risk assessment and the fate of pharmaceuticals in conventional wastewater treatment plants are discussed.

Investigation on separation of mixtures of nitrogen – carbon dioxide – water vapor in the membrane module

Authors: Aleksandra Janusz-Cygan, Krzysztof Warmuziński, Manfred Jaschik, Marek Tańczyk

Keywords: membrane separation, water vapor, carbon dioxide

Abstract: The main aim of the study was to experimentally determine the impact of water vapor in the process of carbon dioxide separation from flue gases. The conducted research allowed us to determine the data required for the calculation of the process of permeation and unambiguously confirmed that the impact of the water vapor in the process of separation of CO2 from flue gases cannot be ignored.

SBA-15 as a carrier for gold nanoparticles

Authors: Klaudia Odrozek, Katarzyna Maresz, Agnieszka Koreniuk, Janusz J. Malinowski, Julita Mrowiec-Białoń

Keywords: gold nanoparticles, aluminum modified-SBA-15, glucose oxidation

Abstract: Modified silica material – SBA-15, with high specific surface area and large pore volume, was used as a carrier for gold nanoparticles. The influence of alumina modification and activation methods with gold nanoparticles on catalysts activity in glucose oxidation with hydrogen peroxide were compared.

Multicomponent Langmuir-Freundlich equation for the prediction of adsorption equilibria of CO2/N2/O2 mixtures over ZMS 13X

Authors: Marek Tańczyk, Manfred Jaschik, Krzysztof Warmuziński

Keywords: carbon dioxide abatement, adsorption equilibria, gaseous mixtures, zeolite molecular sieves

Abstract: Experimental results are presented which concern the adsorption equilibria of gaseous mixtures containing carbon dioxide, nitrogen and oxygen over zeolite molecular sieves 13X Grace which may be used in the separation of CO2 from flue gases. Experimental results are compared with the results of calculations using the Langmuir-Freundlich equation. Good agreement is found between the experiment and calculations. It is shown that the Langmuir-Freundlich equation can be used for the calculation of gas-solid equlibria in systems containing mixtures of CO2, N2, O2 and zeolite molecular sieves 13X Grace.

Morphological characteristics and transport coefficients for reticulated vitreous carbon (RVC) foams

Authors: Marcin Piątek, Anna Gancarczyk, Marzena Iwaniszyn, Mieczysław Jaroszyński, Bożena Janus, Roman Pędrys, Tadeusz Kleszcz, Joanna Kryca, Franciszek Owczarek, Andrzej Kołodziej

Keywords: Reticulated vitrous carbon foams, computed tomography, heat and mass transport

Abstract: In this paper, the morphological parameters and transport coefficients are studied for the reticulated vit-reous carbon (RVC) foams of pore density 30 and 80 PPI. SkySkan 1172 X-ray microtomograph was used to study the foam structure. Heat transfer coefficients were determined by foam heating by electric current flowing directly through it. Mass transfer coefficients were determined based on the Chilton-Colburn analo-gy.

Influence of cross-linking in poly(ionic liquid) membranes on diffusivity and solubility of gases

Authors: Daniel Piech, Krzysztof Warmuziński

Keywords: membrane separation, carbon dioxide, poly(ionic liquid)s, cross-linking, diffusion

Abstract: Review of literature data concerning poly(ionic liquid) membranes for gas separation is presented. The influence of polymer structure (e.g. cross-linking) on diffusivity and solubility of CO2, N2, CH4 is dis-cussed. Performance of cross-linking in poly(ionic liquid)s is described.

Improvement of VOCS biofiltration in bioreactors containing partitioning phase with hydrophobic properties

Authors: Rafał Sarzyński, Joanna Kaleta, Hanna Kolarczyk

Keywords: biofiltration, vilatile organic compounds, hydrophobic partitioning phase

Abstract: Biofiltration of airstream contaminated by hydrophilic Volatile Organic Compounds (VOC) proceeds in a higher yield than for hydrophobic VOC. Improvement of the process for hydrophobic VOC is possible by addition a hydrophobic phase to bioreactor. Use of the hydrophobic phase in trickle bed bioreactors enable increased conversion degree of hydrophobic pollutant.

The effect of deviations of process parameters from optimum parameters on the work of catalyst carriers in multi-tubular reactors

Authors: Waldemar Krajewski, Krystian Kalinowski, Wincenty Turek

Keywords: multi-tubular reactors, catalyst carriers, entropy

Abstract: Vanadium-titanium catalysts deposited on structural carriers work in industrial multi-tubular reactors most often in conditions deviated from optimum parameters. As a result we observe distinct differences in productivities of the process in individual tubes of the reactor. The effect of deviations from optimum pa-rameters on thermal-flow characteristics of structural catalysts has been presented. A criterion of the mini-mum generation of the entropy was applied.

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