Temat: hydrophobic membrane - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Application of microfiltration membrane module for ammonia removal process
Zastosowanie mikrofiltracyjnego modułu membranowego do procesu usuwania amoniaku
Autorzy:: Słowikowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/127287.pdf
Data publikacji:: 2010
Wydawca:: Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:: ammonia removal
membrane contactor
hydrophobic membrane
usuwanie amoniaku
kontaktory membranowe
membrany hydrofobowe
Opis:: The aim of this work was to investigate the applicability of membrane distillation for ammonia removal from its aqueous solutions. The hollow-fiber, hydrophobic microfiltration membrane module was applied in order to assess its performance. The effects of different operating parameters on ammonia removal from aqueous solutions of different concentrations were investigated. Ammonia was absorbed in strong inorganic acid, in all tests that were taken.
Przetestowano możliwość usuwania amoniaku z jego wodnych roztworów za pomocą hydrofobowego, mikrofiltracyjnego (MF) modułu membranowego wyposażonego w membrany kapilarne. Określono wpływ temperatury oraz początkowego stężenia amoniaku na szybkość jego usuwania z wodnego roztworu. W obu analizowanych przypadkach amoniak został zaabsorbowany w mocnym kwasie nieorganicznym.
Źródło:: Proceedings of ECOpole; 2010, 4, 1; 79-83
1898-617X
2084-4557
Pojawia się w:: Proceedings of ECOpole
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Carbon dioxide removal from MEA - water solution on PDMS tubular membrane
Autorzy:: Krupiczka, R.
Rotkegel, A.
Ziobrowski, Z.
Powiązania:: https://bibliotekanauki.pl/articles/185661.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: MEA
desorpcja
dwutlenek węgla
membrana hydrofobowa
PDMS
desorption
carbon dioxide
hydrophobic membrane
Opis:: The process of carbon dioxide removal from monoethanolamine (MEA) - water solution was investigated on Poly Di Methyl Siloxane (PDMS) hydrophobic tubular membrane with a ceramic support. The effects of feed temperature, liquid flow rate and MEA concentration on C02 mass transfer and selectivity were examined and found to be with a reasonable deviation (+/-25%) with predictions based on the multilayer film model. The membrane resistance was evaluated in separate experiments. The measured C02 mass fluxes (0.17-0.45 kg/(m2h)) were found to be independent of the MEA concentration in the feed.
Źródło:: Chemical and Process Engineering; 2011, 32, 4; 280-290
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Physical properties of lipid bilayer membranes: relevance to membrane biological functions.
Autorzy:: Subczynski, Witold
Wisniewska, Anna
Powiązania:: https://bibliotekanauki.pl/articles/1044298.pdf
Data publikacji:: 2000
Wydawca:: Polskie Towarzystwo Biochemiczne
Tematy:: lipid exchange
hydrophobic barrier
oxygen transport
lipid unsaturation
membrane domains
lipid bilayer
Opis:: Over the last 25 years one of us (WKS) has been investigating physical properties of lipid bilayer membranes. In 1991 a group led by WKS was organized into the Laboratory of Structure and Dynamics of Biological Membranes, the effective member of which is AW. Using mainly the electron paramagnetic resonance (EPR) spin-labeling method, we obtained unexpected results, which are significant for the better understanding of the functioning of biological membranes. We have developed a new pulse EPR spin-labeling method for the detection of membrane domains and evaluation of lipid exchange rates. This review will be focused on our main results which can be summarized as follows: (1) Unsaturation of alkyl chains greatly reduces the ordering and rigidifying effects of cholesterol although the unsaturation alone gives only minor fluidizing effects, as observed by order and reorientational motion, and rather significant rigidifying effects, as observed by translational motion of probe molecules; (2) Fluid-phase model membranes and cell plasma membranes are not barriers to oxygen and nitric oxide transport; (3) Polar carotenoids can regulate membrane fluidity in a way similar to cholesterol; (4) Formation of effective hydrophobic barriers to the permeation of small polar molecules across membranes requires alkyl chain unsaturation and/or the presence of cholesterol; (5) Fluid-phase micro-immiscibility takes place in cis-unsaturated phosphatidylcholine-cholesterol membranes and induces the formation of cholesterol-rich domains; (6) In membranes containing high concentrations of transmembrane proteins a new lipid domain is formed, with lipids trapped within aggregates of proteins, in which the lipid dynamics is diminished to the level of gel-phase.
Źródło:: Acta Biochimica Polonica; 2000, 47, 3; 613-625
0001-527X
Pojawia się w:: Acta Biochimica Polonica
Dostawca treści:: Biblioteka Nauki

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