prikaz prve stranice dokumenta Analiza efektivne difuzivnosti komponenata oscilirajućih reakcija u mikroreaktoru
  Download
PDF 1.36 MB
master's thesis
Analiza efektivne difuzivnosti komponenata oscilirajućih reakcija u mikroreaktoru
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2016. urn:nbn:hr:159:807755
Šafranko, Martina
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Process Engineering
Section for Fundamental Engineering

Institutional repository: Repository of the Faculty of Food Technology and Biotechnology

Cite this document

Šafranko, M. (2016). Analiza efektivne difuzivnosti komponenata oscilirajućih reakcija u mikroreaktoru (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:807755

Šafranko, Martina. "Analiza efektivne difuzivnosti komponenata oscilirajućih reakcija u mikroreaktoru." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2016. https://urn.nsk.hr/urn:nbn:hr:159:807755

Šafranko, Martina. "Analiza efektivne difuzivnosti komponenata oscilirajućih reakcija u mikroreaktoru." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2016. https://urn.nsk.hr/urn:nbn:hr:159:807755

Šafranko, M. (2016). 'Analiza efektivne difuzivnosti komponenata oscilirajućih reakcija u mikroreaktoru', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 29 July 2024, https://urn.nsk.hr/urn:nbn:hr:159:807755

Šafranko M. Analiza efektivne difuzivnosti komponenata oscilirajućih reakcija u mikroreaktoru [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2016 [cited 2024 July 29] Available at: https://urn.nsk.hr/urn:nbn:hr:159:807755

M. Šafranko, "Analiza efektivne difuzivnosti komponenata oscilirajućih reakcija u mikroreaktoru", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2016. Available at: https://urn.nsk.hr/urn:nbn:hr:159:807755

Metadata
TitleAnaliza efektivne difuzivnosti komponenata oscilirajućih reakcija u mikroreaktoru
Title (english)Analyis of the effective diffusivity of the oscillating rections components in a microreactor
AuthorMartina Šafranko
MentorMirjana Čurlin (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Process Engineering)
(Section for Fundamental Engineering)
Zagreb
Defense date and country2016-09-30, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Biotechnology
Abstract
Efektivna difuzivnost komponenata oscilirajućih reakcija (kalijev jodat, malonska kiselina, škrob, vodikov peroksid, manganov sulfat, sulfatna kiselina, kalijev bromat i kalijev bromid) analizirana je u mikroreaktoru s glatkim stijenkama. Provedeni su eksperimenti za različite protoke faza od q = 2-400 µL min-1 u mikroreaktoru s 2 ulaza i 2 izlaza ukupnog volumena V = 4 µL. Određeni su profili koncentracija pojedine komponente u obje faze pri različitim vremenima zadržavanja. Na osnovi literaturnih podataka o vrijednosti koeficijenata efektivne difuzivnosti pojedine komponente, primjenom aproksimativne metode s dva idealna cijevna reaktora, provedena je simulacija 2D matematičkog modela prijenosa tvari u mikroreaktoru. Iz rezultata je vidljivo da se trend promjene koncentracije može opisati odabranim modelom uz odstupanja pri malim vremenima zadržavanja. S obzirom da su izračunata difuzijska vremena za mikroreaktorski sustav kraća za tri reda veličine u odnosu na klasični makroskopski sustav može se zaključiti da su ovi sustavi pogodniji za provedbu i bolju kontrolu oscilirajućih rerakcija.
Abstract (english)
Effective diffusivity of the oscillating reaction components (potassium iodate, malonic acid, starch, hydrogen peroxide, magnesium sulphate, sulphuric acid, potassium bromate, potassium bromide ) was analysed in a microreactor with no surface roughness. Experiment were performed at the flow rates for q = 2-400 µL min-1 using microreactor equipped with 2 Y-shaped inflows and 2 Y-shaped outflows with total working volume of V = 4 µL. Concentration profiles for both phases were obtained at different residence times. Using literature available data on effective diffusivity of the analysed components and applying approximatively method based on two ideal plug flow reactors, mathematical 2D model for the descriptions of the mass transfer in a microreactor was simulated. Results show that selected model describes the experimental data very well with small dispersion at low residence times. Calculated values of the diffusion times show that diffusion process is three fold faster in a microreactor comparing to classical macroreactor and based on that it can be concluded that microreactors are more suitable for performing and controlling oscillating reactions.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:807755
Study programmeTitle: Bioprocess Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka bioprocesnog inženjerstva (magistar/magistra inženjer/inženjerka bioprocesnog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2017-04-25 10:49:09