Autor: Szwast, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: New composite polymer membranes for biogas separation
Autorzy:: Bojarska, M.
Szwast, M.
Piątkiewicz, W.
Powiązania:: https://bibliotekanauki.pl/articles/115604.pdf
Data publikacji:: 2011
Wydawca:: Fundacja na Rzecz Młodych Naukowców
Tematy:: biogas
gas separation
membranes for gas separation
Opis:: Biogas can be used as an alternative energy source. Unfortunately presence of carbon dioxide in a composition of biogas makes compression and transportation difficult. In addition CO2 makes biogas lower calorific. That is why new methods for carbon dioxide separation from biogas are to be explored. Obtained results for polypropylene membranes modifications by polydimethylosiloxanes are presented in this paper.
Źródło:: Challenges of Modern Technology; 2011, 2, 1; 65-68
2082-2863
2353-4419
Pojawia się w:: Challenges of Modern Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Influence of supercritical carbon dioxide on structure and mechanical properties of porous polypropylene membranes
Autorzy:: Krzysztoforski, J.
Krasiński, A.
Henczka, M.
Piętkiewicz, W.
Szwast, M.
Powiązania:: https://bibliotekanauki.pl/articles/115629.pdf
Data publikacji:: 2012
Wydawca:: Fundacja na Rzecz Młodych Naukowców
Tematy:: supercritical fluid
membrane
TIPS
supercritical carbon dioxide
Opis:: The infl uence of supercritical carbon dioxide (scCO2) on structure and mechanical properties of porous polypropylene tubular membranes subjected to diff erent process conditions was investigated. The membranes were treated with scCO2 at pressure of 18 MPa and at three diff erent temperatures (40°C, 70°C, and 100°C) for 2 h in a batch reactor. The obtained samples were analyzed using a scanning electron microscope (SEM) to determine the impact on the membrane structure, tensile testing for ultimate strength assessment, and bubble point test for determination of the pore size distribution and the fi ltration coeffi cient (UFC). A membrane not treated with scCO2 was used as reference sample for comparison. SEM pictures of side surfaces and cross-sections of treated tubular membranes did not reveal any changes in membrane structure. Tensile testing of treated and non-treated samples showed that after scCO2 treatment the ultimate strength slightly decreased (less than 10%), while the Young’s modulus was reduced by almost 50%. The bubble point test showed that scCO2 causes an increase in the number of pores and an increase in the UFC value. In the range 40–100°C no signifi cant temperature dependence was observed. The results confi rm that supercritical carbon dioxide can be used as a medium in porous polypropylene membrane production, maintenance and modifi cation.
Źródło:: Challenges of Modern Technology; 2012, 3, 4; 20-25
2082-2863
2353-4419
Pojawia się w:: Challenges of Modern Technology
Dostawca treści:: Biblioteka Nauki

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