Autor: Henczka, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: New methods for inactivation of Alicyclobacillus acidoterrestris spores in apple juice concentrate
Autorzy:: Djas, M.
Bober, M.
Henczka, M.
Powiązania:: https://bibliotekanauki.pl/articles/115690.pdf
Data publikacji:: 2011
Wydawca:: Fundacja na Rzecz Młodych Naukowców
Tematy:: Alicyclobacillus acidoterrestris
spores
inactivation
pulsed electric field (PEF)
ultrasound (US)
microwaves (MW)
Opis:: This paper is focused on new methods for inhibiting Alicyclobacillus acidoterrestris spores germination in apple juice concentrate. Four methods such as pulsed electric field (PEF), ultrasound (US), integrated method of PEF and US and microwaves (MW) have been investigated. The highest efficiency of spores inactivation was obtained after microwave treatment.
Źródło:: Challenges of Modern Technology; 2011, 2, 2; 46-49
2082-2863
2353-4419
Pojawia się w:: Challenges of Modern Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Reactive extraction of citric acid using supercritical CO2 and trioctylamine
Autorzy:: Djas, M.
Henczka, M.
Potocka, K.
Wawer, J.
Powiązania:: https://bibliotekanauki.pl/articles/115431.pdf
Data publikacji:: 2015
Wydawca:: Fundacja na Rzecz Młodych Naukowców
Tematy:: reactive extraction
supercritical CO2
citric acid
trioctylamine
reaktywna ekstrakcja
CO2 w stanie nadkrytycznym
kwas cytrynowy
trietyloamina
Opis:: The paper is dedicated to the integrated process of the reactive extraction of citric acid from aqueous solution using supercritical CO2 and trioctylamine. The aim of this study is to investigate the influence of process parameters (concentration of reactants in phases, pressure, temperature, mixing rate, mixing time) on the course of the reactive extraction process. The increase of the initial concentration of amine (0.04-0.07 mol∙dm-3) results in the higher efficiency of reactive extraction. The influence of pressure (12-18 MPa) on the process is negligible. The process efficiency decreases with temperature (308-328 K). The increase of stirrer speed (250-500 rpm) leads to increase of process rate, so the final efficiency is obtained in shorter time.
Źródło:: Challenges of Modern Technology; 2015, 6, 4; 27-30
2082-2863
2353-4419
Pojawia się w:: Challenges of Modern Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

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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