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undergraduate thesis
Analiza efektivne difuzivnosti galne kiseline kao modelnog supstrata za analizu vodenih ekstrakcija u mikroreaktorima
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2019. urn:nbn:hr:159:275940
Inkret, Paula
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Process Engineering
Laboratory for Measurement, Regulation and Automatisation

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

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Inkret, P. (2019). Analiza efektivne difuzivnosti galne kiseline kao modelnog supstrata za analizu vodenih ekstrakcija u mikroreaktorima (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:275940

Inkret, Paula. "Analiza efektivne difuzivnosti galne kiseline kao modelnog supstrata za analizu vodenih ekstrakcija u mikroreaktorima." Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2019. https://urn.nsk.hr/urn:nbn:hr:159:275940

Inkret, Paula. "Analiza efektivne difuzivnosti galne kiseline kao modelnog supstrata za analizu vodenih ekstrakcija u mikroreaktorima." Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2019. https://urn.nsk.hr/urn:nbn:hr:159:275940

Inkret, P. (2019). 'Analiza efektivne difuzivnosti galne kiseline kao modelnog supstrata za analizu vodenih ekstrakcija u mikroreaktorima', Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 01 January 2025, https://urn.nsk.hr/urn:nbn:hr:159:275940

Inkret P. Analiza efektivne difuzivnosti galne kiseline kao modelnog supstrata za analizu vodenih ekstrakcija u mikroreaktorima [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2019 [cited 2025 January 01] Available at: https://urn.nsk.hr/urn:nbn:hr:159:275940

P. Inkret, "Analiza efektivne difuzivnosti galne kiseline kao modelnog supstrata za analizu vodenih ekstrakcija u mikroreaktorima", Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:159:275940

Metadata
TitleAnaliza efektivne difuzivnosti galne kiseline kao modelnog supstrata za analizu vodenih ekstrakcija u mikroreaktorima
Title (english)Analysis of effective diffusivity of gallic acid as a model substrate for analysis of aqueous extractions in microreactors
AuthorPaula Inkret
MentorDavor Valinger (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Process Engineering)
(Laboratory for Measurement, Regulation and Automatisation)
Zagreb
Defense date and country2019-09-18, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Biotechnology
Abstract
Iako se još uvijek većina kemijskih i biokemijskih reakcija u laboratorijima odvija u reaktorima velikih volumena, mikroreaktori su posljednjih 20 godina postali vrlo zanimljivi zbog niskih operacijskih troškova, većih efikasnosti procesa i prinosa te mogućnosti provođenja reakcija s vrlo nestabilnim i brzo razgradivim intermedijerima. U sklopu razvoja novog mikroreaktorskog sustava u ovom radu korištena je galna kiselina kao modelni supstrat u mikroreaktoru glatkih stijenki s Y-ulazom i Y-izlazom aktivnog volumena 4 μL. Cilj ovoga rada bio je na temelju eksperimentalnih podataka razviti model efektivne difuzivnosti galne kiseline kao modelnog supstrata za razne mikroreaktorske analize vodenih ekstrakata. Rezultat simulacije matematičkog modela procesa difuzije riješenog aproksimativnom metodom (mikroreaktor je opisan s dva idealna cijevna reaktora) dao je vrlo dobra slaganja s eksperimentalnim podacima. Pomoću razvijenog modela, predviđene su i efektivne difuzivnosti galne kiseline za koncentracije koje nisu mjerene te je prikazano kako širina kanala mikroreaktora utječe na brzinu efektivne difuzivnosti.
Abstract (english)
Although most of the chemical and biochemical reactions in laboratories still take place in large volume reactors, microreactors have become very popular over the last 20 years due to low operating costs, higher process and yield efficiency and the ability to carry out reactions with highly unstable and rapidly degradable intermediates. As part of the development of a new microreactor system, in this work, gallic acid was used as a model substrate in a smooth surface micro-channel walls microreactor equipped with Y-shape inlet and Y-shape outlet with active volume of V = 4 μL. The aim of this work was to develop a model of gallic acid effective diffusivity (used as substrate model for microreactor analysis of aqueous extracts) based on experimental data. The result of the mathematical model simulation for the diffusion process which was solved by an approximate method (a microreactor was described by two ideal tube reactors) gave very good agreement with the experimental data. The developed model also gave very good predictions of effective diffusivity for the concentrations of gallic acid that were not measured and showed how the width of the microreactor channel influences the speed of effective diffusivity.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:275940
Study programmeTitle: Biotechnology
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka biotehnologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka biotehnologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2019-09-23 09:40:25