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Wyszukujesz frazę "bioimmobilization" wg kryterium: Temat

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Evaluation of petroleum hydrocarbons adsorbtion and biodegradation by Pseudomonas aeruginosa cells entrapped into silica-alginate beads
    Autorzy:
    Mizielińska, Małgorzata
    Kowalska, Urszula
    Łopusiewicz, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1179265.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Pseudomonas aeruginosa
    biodegradation
    bioimmobilization
    encapsulation
    petroleum hydrocarbons
    Opis:
    The aim of the work was to elaborate new method of wool entrapping into silica alginate beads and checking of their adsorption properties. The purpose of the present study was also to determine water bioremediation efficiency using Pseudomonas aeruginosa cells immobilized into wool entrapped into silica-alginate beads. The results of study showed that obtained capsules are stable in saline water environment. Additionally neither silica adsorbers nor wool impacted negatively on viability of bacterial strains that were entrapped into these capsules. Moreover, it should be underline that 83,01% of adsorbed engine oil has been degraded by immobilized microorganisms after 3 months of biodegradation process. The results proved that properties and non-toxic character of these beads are suitable enough to use them in purification of water from petroleum hydrocarbons.
    Źródło:
    World Scientific News; 2017, 80; 256-267
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The continuous bioconversion of glycerol to 1,3-PD by using encapsulated C. freundii cells
    Autorzy:
    Kowalska, Urszula
    Mizielińska, Małgorzata
    Soból, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/1178073.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    PDADMAC beads
    alginate capsules
    bioimmobilization
    encapsulation
    Opis:
    The aim of the work was to decrease the costs of bioconversion process by using chip and simple chromatographic columns containing immobilized C. freundii cells during fermentation. The goal was also modification of medium to control of pH of process in these columns. The purpose of the study was also to ascertain the new systems of biopolymers used for encapsulation of bacterial cells. The stability of obtained membranes in different mediums has been examined. The waste glycerol conversion to 1,3-PD over continuous process has been analyzed as well. The results of the study showed that the double crosslinked alginate beads are better carriers than alginate capsules coated by chitosan during conversion of waste glycerol to 1,3-PD. Unfortunatrly these two kinds of capsules should not be used for continuous process and repeated bioconversions because of low mechanical properties of the beads. PDADMAC beads and modified (e.g. by additions) PDADMAC capsules should not be used for continuous and repeated bioconversions as well.
    Źródło:
    World Scientific News; 2018, 95; 193-214
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of PU foams modification on the efficiency of Citrobacter freundii cells immobilization
    Autorzy:
    Mizielińska, Małgorzata
    Kowalska, Urszula
    Łopusiewicz, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1178364.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Citrobacter freundii
    bacterial adhesion
    bioimmobilization
    polyurethane foam
    Opis:
    The purpose of the study was to modify PU (polyurethane) foams to increase the efficiency of Citrobacter freundii cells adhesion. The immobilization can contribute to better productivity during the bioconversion of glycerol to 1,3-propanediol (1,3-PD). The results of the study showed that C. freundii immobilized on foams with organic additives could decompose more glycerol and produce more 1,3-PD than cells immobilized on pure foams. The immobilization made production in long-term operations or repeated runs possible. The results of the experiments have also proved that the foams with additives, especially with wood chips and peanut shells, would be the most suitable carriers because they allow the immobilization of a higher number of bacterial cells. It was demonstrated that the initial number of C. freundii cells in all samples (before incubation) was 1.2×106 CFU/mL. The results showed that the accumulation of bacterial cells in the control sample with pure PUF (polyurethane foams) was 1.5×107 CFU/mL after 24 hours of incubation (the number of bacterial cells attached to surface of foams). It was determined that the accumulation of bacterial cells in samples with 15% of additives at 30 °C increased to 2.17×107/ 3.37×107/ 1.25×108/ 1.65×108/ 5.65×107 CFU (PUFbtb, PUFab, PUFwch, PUFps, PUFrc) CFU/mL after 24 hours of incubation.
    Źródło:
    World Scientific News; 2017, 77, 2; 211-225
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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