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    Wyświetlanie 1-5 z 5
    Tytuł:
    The lichen molecular bioindicator of CO2 pollution of air
    Autorzy:
    Pawlowski, M.
    Skrzypczak, A.
    Studzinska-Sroka, E.
    Bylka, W.
    Bialek-Bylka, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/80878.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    lichen
    carbon dioxide
    air pollution
    molecular bioindicator
    ionic liquid
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental and numerical investigation of electrostatic spray liquid-liquid extraction with ionic liquids
    Autorzy:
    Krawczyk, M.
    Kamiński, K.
    Petera, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/185100.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ciecze jonowe
    ekstrakcja ciecz-ciecz
    symulacja numeryczna
    electrostatic spray
    ionic liquids
    liquid-liquid extraction
    numerical simulation
    Opis:
    A new concept of an electrostatic spray column for liquid-liquid extraction was investigated. An important problem for separation processes is the presence of azeotropic or close-boiling mixtures in their production, for example heptane with ethanol, since the separation is impossible by ordinary distillation. The use of ionic liquids (IL) as a dispersed solvent specially engineered for any specific organic mixture in terms of selectivity is a key factor to successful separation. As IL present particularly attractive combination of favorable characteristics for the separation of heptane and ethanol, in this work we use 1-butyl-3-methylimidazolium methyl sulfate [BMIM][MeSO4]. Because of high viscosity and relatively high cost of IL a new technique was introduced, consisting in the electrostatically spray generation to enhance the mass transport between the phases. In order to optimally design the geometry of the contactor a series of numerical simulation was performed. Especially multi-nozzle variants for better exploitation of contactor volume were investigated. Experiments showed excellent possibility of control of the dispersion characteristics by applied voltage and thus control of the rate of extraction. The preliminary simulations based on our mathematical model for a three nozzle variant exhibited visual agreement with the theory of electrostatics.
    Źródło:
    Chemical and Process Engineering; 2012, 33, 1; 167-183
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Liquid-Liquid Extraction in Systems Containing Butanol and Ionic Liquids – A Review
    Autorzy:
    Kubiczek, A.
    Kamiński, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/185850.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    extraction
    ionic liquids
    butanol
    liquid-liquid equilibrium
    NRTL equation
    ekstrakcja
    ciecze jonowe
    Równowaga ciecz-ciecz
    Równanie NRTL
    Opis:
    Room-temperature ionic liquids (RTILs) are a moderately new class of liquid substances that are characterized by a great variety of possible anion-cation combinations giving each of them different properties. For this reason, they have been termed as designer solvents and, as such, they are particularly promising for liquid-liquid extraction, which has been quite intensely studied over the last decade. This paper concentrates on the recent liquid-liquid extraction studies involving ionic liquids, yet focusing strictly on the separation of n-butanol from model aqueous solutions. Such research is undertaken mainly with the intention of facilitating biological butanol production, which is usually carried out through the ABE fermentation process. So far, various sorts of RTILs have been tested for this purpose while mostly ternary liquid-liquid systems have been investigated. The industrial design of liquid-liquid extraction requires prior knowledge of the state of thermodynamic equilibrium and its relation to the process parameters. Such knowledge can be obtained by performing a series of extraction experiments and employing a certain mathematical model to approximate the equilibrium. There are at least a few models available but this paper concentrates primarily on the NRTL equation, which has proven to be one of the most accurate tools for correlating experimental equilibrium data. Thus, all the presented studies have been selected based on the accepted modeling method. The reader is also shown how the NRTL equation can be used to model liquid-liquid systems containing more than three components as it has been the authors’ recent area of expertise.
    Źródło:
    Chemical and Process Engineering; 2017, 38, 1; 97-110
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of numerical modelling to scaling-up of electrically induced extraction from an organic mixture using an ionic liquid
    Autorzy:
    Kamiński, K.
    Weatherley, L.R.
    Petera, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/185391.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    scaling-up
    finite element analysis
    liquid-liquid extraction
    ionic liquids
    electrospray
    skalowanie
    analiza metodą elementów skończonych
    ekstrakcja ciecz-ciecz
    ciecze jonowe
    elektrorozpylanie
    Opis:
    Liquid-liquid extraction provides an environmentally friendly process as an alternative to azeotropic distillation, pervaporation and reverse osmosis because these techniques require the use of large amounts of energy, may involve volatile organic compounds, and operation at high pressureIonic liquids (ILs) continue to gain wide recognition as potential environmentally friendly solvents due to their unique properties. However due to their current high cost, their use in industry is seriously limited without an efficient methodology for recovery and recycle. In this paper we describe an innovative methodology for a liquid-liquid extraction process based on an electrically induced emulsion of an ionic liquid as the extracting solvent dispersed in an organic mixture. This offers a most efficient exploitation of the solvent. On the other hand we present our own design of a pilot (semi-industrial) scale extractor based on this methodology and which demonstrates effective recovery of the ionic liquid. In order to achieve this goal we used a numerical modelling tool implemented using our own simulation software based on the finite element method. We also used our original previous experience with generating and investigating liquid-liquid electrosprays using phase Doppler anemometry. Finally we present recommendations for contactor geometry and for the preferred operating conditions for the extractor.
    Źródło:
    Chemical and Process Engineering; 2016, 37, 1; 133-148
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prediction of Gas Solubility in Ionic Liquids Using the Cosmo-Sac Model
    Autorzy:
    Jaschik, M.
    Piech, D.
    Warmuziński, K.
    Jaschik, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/184942.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    vapour-liquid equilibrium
    ionic liquids
    Henry’s constant
    solubility
    carbon dioxide
    capture
    COSMO-SAC model
    równowaga par i cieczy
    ciecze jonowe
    Stała Henry'ego
    rozpuszczalność
    dwutlenek węgla
    Model COSMO-SAC
    Opis:
    Thermodynamic principles for the dissolution of gases in ionic liquids (ILs) and the COSMO-SAC model are presented. Extensive experimental data of Henry’s law constants for CO2, N2 and O2 in ionic liquids at temperatures of 280-363 K are compared with numerical predictions to evaluate the accuracy of the COSMO-SAC model. It is found that Henry’s law constants for CO2 are predicted with an average relative deviation of 13%. Both numerical predictions and experimental data reveal that the solubility of carbon dioxide in ILs increases with an increase in the molar mass of ionic liquids, and is visibly more affected by the anion than by the cation. The calculations also show that the highest solubilities are obtained for [Tf2N]ˉ. Thus, the model can be regarded as a useful tool for the screening of ILs that offer the most favourable CO2 solubilities. The predictions of the COSMOSAC model for N2 and O2 in ILs differ from the pertinent experimental data. In its present form the COSMO-SAC model is not suitable for the estimation of N2 and O2 solubilities in ionic liquids.
    Źródło:
    Chemical and Process Engineering; 2017, 38, 1; 19-30
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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