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Bachelor's Thesis
Author of thesis: Marek Kollár
Acad. year: 2025/2026
Supervisor: prof. Eric Daniel Glowacki, Ph.D.
Reviewer: doc. Mgr. Zdenka Fohlerová, Ph.D.
This bachelor's thesis focuses on the development of low-volume bioreactors for biotechnological applications. The theoretical part provides an overview of existing commercial systems and available alternative solutions, and subsequently focuses on the analysis of sensor technologies suitable for this type of application. It describes the operating principles of selected sensors and evaluates their advantages and disadvantages in the context of monitoring key process parameters. The practical part describes the implementation of a functional prototype of a mini-bioreactor built on the Raspberry~Pi~5 platform with a custom expansion board. The prototype combines temperature regulation, magnetic stirring, and liquid dosing using peristaltic pumps into a single autonomous unit. An EmStat~Pico potentiostat module was integrated into the system, enabling control of its entire electrochemical part. A pH electrode was connected to demonstrate its functionality. The work also includes a custom amperometric hydrogen peroxide sensor designed and characterized within the project, which together with the pH electrode covers the two fundamental types of electrochemical measurement, and therefore a wide range of additional sensors. Biomass growth can be monitored optically, without the need for sampling.The entire device is operated by custom software with a web interface for data visualization and remote control. The functionality of the system was verified under laboratory conditions, and the results confirm its readiness for deployment in real cultivation experiments.
mini-bioreactor, amperometric hydrogen peroxide sensor, pH electrode, EmStat Pico potentiostat, Raspberry Pi, PID control, optical density, magnetic stirring, peristaltic pump
Date of defence
16.06.2026
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
Student prezentoval výsledky své práce a komise byla seznámena s posudky. Doc. Gumulec položil otázku: Jaký je průtok peristaltických čerpadel a jak jsou kalibrovány? Byl již bioreaktor využit při experimentu? Ing. Šabatová položila otázku: Jaký je rozdíl mezi navrhovanými sondami? Ing. Odstrčilík položil otázku: Jak moc bylo náročné vytvořit vývojovou desku? Student obhájil bakalářskou práci a odpověděl na otázky členů komise a oponenta.
Language of thesis
Slovak
Faculty
Fakulta elektrotechniky a komunikačních technologií
Department
Department of Biomedical Engineering
Study programme
Biomedical Technology and Bioinformatics (BPC-BTB)
Composition of Committee
Doc. MUDr. Jaromír Gumulec, Ph.D. (předseda) doc. Mgr. Ing. Karel Sedlář, Ph.D. (místopředseda) Ing. Kateřina Šabatová (člen) Ing. Lucie Šaclová, Ph.D. (člen) Ing. Jan Odstrčilík, Ph.D. (člen) Ing. et Ing. Michal Nohel (člen)
Supervisor’s reportprof. Eric Daniel Glowacki, Ph.D.
Grade proposed by supervisor: A
Reviewer’s reportdoc. Mgr. Zdenka Fohlerová, Ph.D.
Grade proposed by reviewer: A
Responsibility: Mgr. et Mgr. Hana Odstrčilová