Design of aeration element for flat panel photobioreactor
Návrh aeračního elementu pro deskový fotobioreaktor
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České vysoké učení technické v Praze
Czech Technical University in Prague
Czech Technical University in Prague
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Diplomová práce je zaměřena na homogenní aeraci fotobioreaktorů a zajištění optimálních kultivačních podmínek mikrořas. Hlavním cílem této práce je návrh a konstrukce aeračního elementu včetně technické dokumentace. V rámci práce je vypracována rešerše, která se zabývá optimálními podmínkami kultivace a způsoby aerace různých kultivačních systémů, se zaměřením na mikrořasu Chlorella vulgaris. Na základě literární rešerše jsou navrženy varianty dvou aeračních elementů pro deskový fotobioreaktor. Dle konstrukčního návrhu jsou elementy vyrobeny a odzkoušeny v testovacím reaktoru. V návaznosti na výrobu jsou aerační elementy experimentálně testovány a vzájemně porovnány. V rámci experimentu byly měřeny kritické parametry pro kultivaci, tzn doba zdržení plynu, velikost a rychlost proudících bublin a jemnobublinná homogenní aerace. Celkem byly měřeny 4 různé porézní membrány. Výsledky měření jsou vzájemně diskutovány a porovnány s literaturou. Následuje kritické zhodnocení celého experimentu a možnosti využití aeračních elementů včetně porézních membrán pro „scale-up“.
This master thesis is focused on homogeneous aeration of photobioreactors and ensuring optimal culture conditions of microalgae. Main focus of the thesis is the design and construction of an aeration element, including technical documentation. As part of the thesis is a research prepared, which deals with optimal cultivation conditions and methods of aeration of various cultivation systems, focusing on the microalgae Chlorella vulgaris. Based on the literature search, variants of two aeration elements for a plate photobioreactor are proposed. According to the design, the elements are manufactured and tested in a test reactor. Following the production, the aeration elements are experimentally tested and compared with each other. In the experiment, critical parameters for cultivation were measured, ie gas residence time, size and velocity of flowing bubbles and fine-bubble homogeneous aeration. A total of 4 different porous membranes were measured. The measurement results are mutually discussed and compared with the literature. The following is a critical evaluation of the entire experiment and the possibility of using aeration elements, including porous membranes for "scale-up".
This master thesis is focused on homogeneous aeration of photobioreactors and ensuring optimal culture conditions of microalgae. Main focus of the thesis is the design and construction of an aeration element, including technical documentation. As part of the thesis is a research prepared, which deals with optimal cultivation conditions and methods of aeration of various cultivation systems, focusing on the microalgae Chlorella vulgaris. Based on the literature search, variants of two aeration elements for a plate photobioreactor are proposed. According to the design, the elements are manufactured and tested in a test reactor. Following the production, the aeration elements are experimentally tested and compared with each other. In the experiment, critical parameters for cultivation were measured, ie gas residence time, size and velocity of flowing bubbles and fine-bubble homogeneous aeration. A total of 4 different porous membranes were measured. The measurement results are mutually discussed and compared with the literature. The following is a critical evaluation of the entire experiment and the possibility of using aeration elements, including porous membranes for "scale-up".