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Wyszukujesz frazę "membrane contactor" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Enzymatic synthesis of hydrophobic compounds integrated with membrane separation
Autorzy:
Noworyta, A.
Trusek-Holownia, A.
Powiązania:
https://bibliotekanauki.pl/articles/185023.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
membrane contactor
product extraction
mathematical model
Opis:
The enzymatic synthesis of a highly hydrophobic product (dipeptide precursor) in which the reaction is accompanied by the mass transfer of the reaction product to the organic phase and the substrates to the water phase is considered. Equations describing both continuous and batch processes are formulated. The range of variability in the operating parameters of such a bioreactor is specified, and the correlations reported in the literature to describe mass transfer in the membrane contactor are validated. The proposed process was verified experimentally, and good agreement between the determined and calculated concentrations was obtained in both phases.
Źródło:
Chemical and Process Engineering; 2016, 37, 1; 15-27
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biological regeneration of liquid sorbents after industrial purification of outlet gases
Autorzy:
Trusek-Hołownia, A.
Noworyta, A.
Powiązania:
https://bibliotekanauki.pl/articles/185195.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biodegradation
membrane bioreactor
industrial gas purification
membrane contactor
VOC
biodegradacja
bioreaktor membranowy
oczyszczanie gazów przemysłowych
Opis:
Biological regeneration of water and organic sorbents used in the absorption of hydrophilic and hydrophobic pollutants, respectively, was studied. In both cases biodegradation takes place in a membrane bioreactor. In the case of organic sorbents regeneration of the biodegradation process is integrated with the extraction of a given pollutant to water phase. In experiments carried out in this work, the proposed systems were tested using a strain of Pseudomonas fluorescens. For hydrophilic compounds experiments were performed using alcohols (1-butanol and 2-propanol) as model substrates. Applying the mathematical model of a membrane bioreactor elaborated previously, the values of pollutant concentration were determined and positively verified in the experiments. This system of water sorbent regeneration is fully satisfying. The process of biodegradation integrated with extraction was analysed on the basis of model compounds such as benzene and toluene. The study confirmed a possibility of organic sorbent (silicone oil) regeneration. However, due to a very high partition coefficient of benzene or toluene between the organic and aqueous phases, the process could be considered only for the case of their high concentrations in the gas directed to absorption.
Źródło:
Chemical and Process Engineering; 2012, 33, 4; 667-678
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Designing of membrane contactors with cross-counter current flow
Autorzy:
Kołtuniewicz, A.B.
Modelski, S.
Witek, A.
Powiązania:
https://bibliotekanauki.pl/articles/952681.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
membrane contactor
sorption process
integrated processes of separation
designing
surface renewal theory
stycznik membranowy
proces sorpcji
zintegrowany proces separacji
projektowanie
teoria odnowienie powierzchni
Opis:
The knowledge about membrane contactors is growing rapidly but is still insufficient for a reliable designing. This paper presents a new type of membrane contactors that are integrated with one of the following ways of separation by using absorbents, micelles, flocculants, functionalized polymers, molecular imprints, or other methods that are based on aggregation. The article discusses methods for designing multi-stage cascade, usually counter-current. At every stage of this cascade, relevant aggregates are retained by the membrane, while the permeate passes freely through membrane. The process takes place in the membrane boundary layer with a local cross-flow of the permeate and the retentate. So the whole system can be called a cross-counter-current. The process kinetics “k” must be coordinated with the permeate flux “J” and the rate of surface renewal of the sorbent on the membrane surface, s. This can be done by using ordinary back-flushing or relevant hydrodynamic method of sweeping, such as: turbulences, shear stresses or lifting forces. A surface renewal model has been applied to adjust the optimal process conditions to sorbent kinetics. The experimental results confirmed the correctness of the model and its suitability for design of the new type of contactors.
Źródło:
Chemical and Process Engineering; 2012, 33, 4; 573-583
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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