Počet záznamů: 1
Experimental validation of a nonequilibrium model of CO2 fluxes between gas, liquid medium, and algae in a flat-panel photobioreactor
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SYSNO ASEP 0359491 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Experimental validation of a nonequilibrium model of CO2 fluxes between gas, liquid medium, and algae in a flat-panel photobioreactor Tvůrce(i) Nedbal, Ladislav (UEK-B)
Červený, Jan (UEK-B) RID, ORCID, SAI
Keren, N. (IL)
Kaplan, A. (IL)Celkový počet autorů 4 Zdroj.dok. Journal of Industrial Microbiology & Biotechnology - ISSN 1367-5435
Roč. 37, č. 12 (2010), s. 1319-1326Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova algae ; carbon dioxide ; cyanobacteria ; mathematical model ; photosynthesis Vědní obor RIV EH - Ekologie - společenstva CEP GA206/09/1284 GA ČR - Grantová agentura ČR CEZ AV0Z60870520 - UEK-B (2005-2011) UT WOS 000284373300013 DOI 10.1007/s10295-010-0876-5 Anotace Carbon dioxide (CO2) availability strongly affects the productivity of algal photobioreactors, where it is dynamically exchanged between different compartments, phases, and chemical forms. To understand the underlying processes, we constructed a nonequilibrium mathematical model of CO2 dynamics in a flat-panel algal photobioreactor. The model includes mass transfer to the algal suspension from a stream of bubbles of CO2-enriched air and from the photobioreactor headspace. Also included are the hydration of dissolved CO2 to bicarbonate ion (HCO (3) (-) ) as well as uptake and/or cycling of these two chemical forms by the cells. The model was validated in experiments using a laboratory-scale flat-panel photobioreactor that controls light, temperature, and pH and where the concentration of dissolved CO2, and partial pressure of CO2 in the photobioreactor exhaust are measured. First, the model prediction was compared with measured CO2 dynamics that occurred in response to a stepwise change in the CO2 partial pressure in the gas sparger. Furthermore, the model was used to predict CO2 dynamics in photobioreactors with unicellular, nitrogen-fixing cyanobacterium Cyanothece sp. The metabolism changes dramatically during a day, and the distribution of CO2 is expected to exhibit a pronounced diurnal modulation that significantly deviates from chemical equilibrium. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2012
Počet záznamů: 1