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Wyświetlanie 1-3 z 3
Tytuł:
Regeneration of polymer and ceramic modules with the use of recovered single-phase detergent. Dairy industry case study
Autorzy:
Kowalska, Izabela
Powiązania:
https://bibliotekanauki.pl/articles/2171848.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
dairy industry
membrane separation
dairy wastewater
membrane technology
przemysł mleczarski
separacja membranowa
ścieki mleczarskie
technologia membranowa
Opis:
The effectiveness of recovered washing compositions containing single-phase detergents from cleaning-in-place (CIP) systems as solutions for the regeneration of membrane modules fouled during the filtration of wastewater from the prerinsing of the production line (white water) was assessed. The influence of process parameters (regeneration time, transmembrane pressure, cross-flow velocity, and solution temperature) on relative flux recovery was evaluated. A significantly higher regeneration efficiency of the ceramic and polymeric modules was obtained for the alkaline detergent compared to that of the acid formula. The key process parameters for the regeneration cycle were the contact time of the module with the cleaning detergent and its temperature. The influence of transmembrane pressure and cross-flow velocity on module permeability was negligible. Filtration experiments with white water confirmed that the membrane separation process is suitable for the recovery of milk compounds from dairy effluents.
Źródło:
Environment Protection Engineering; 2022, 48, 4; 85--96
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surfactant fouling in pressure-driven membrane processes
Autorzy:
Klimonda, Aleksandra
Kowalska, Izabela
Powiązania:
https://bibliotekanauki.pl/articles/28407427.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
membrane processes
surfactants
micellar solution
nanofiltration
procesy membranowe
środki powierzchniowo-czynne
roztwór micelarny
nanofiltracja
Opis:
The fouling phenomenon of porous polymeric ultrafiltration and nanofiltration membranes was investigated during the purification of solutions containing surfactants. The effects of surfactant type, concentration, and membrane pore size on process performance were evaluated. The highest intensity of membrane fouling was caused by micellar solutions, resulting from the coexistence of monomeric and aggregated surfactant forms. A significant role of hydrophobic/hydrophilic interactions between surfactants and the polymer surface in membrane fouling was proved. Interpretation of the theoretical fouling model showed that cake formation is the dominant fouling mechanism of membranes.
Źródło:
Environment Protection Engineering; 2023, 49, 4; 109--119
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Separation and concentration of cationic surfactant solutions with the use of ceramic modules
Autorzy:
Klimonda, Aleksandra
Kowalska, Izabela
Powiązania:
https://bibliotekanauki.pl/articles/207592.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
surfaktanty
nanofiltracja
membrana
surfactants
nanofiltration
membrane
Opis:
This paper presents the findings of experimental research on employing ultrafiltration and microfiltration ceramic modules (150 kDa, 0.14 μm, 0.45 μm) for removal and concentration of the cationic surfactant Tequat LC90i (TEAQ) from water solutions. The filtration tests were performed at a semi-pilot installation in a crossflow regime. The feed solution parameters (surfactant concentration, pH of the treated solution, the presence of inorganic salt), and process conditions (transmembrane pressure and linear velocity) on the membrane filtration efficiency were evaluated. In all tests, very satisfactory TEAQ retention coefficients (in the range of 70–95) have been achieved. However, surfactant fouling occurred resulting in deterioration of the permeability of the modules. Modules characterized by the pore sizes greater than the size of surfactant particles (i.e., 0.45 μm modules) proved to be the most fouling resistant ones. It was also proven that process performance at high linear flow velocity can efficiently reduce the intensity of membrane pore blocking.
Źródło:
Environment Protection Engineering; 2020, 46, 2; 41-51
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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