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Bioenergetics of growth and lipid production in Chlamydomonas reinhardtii
journal contribution
posted on 2023-06-09, 04:46 authored by Kubra Kücük, Rahul Tevatia, Esra SorguvenEsra Sorguven, Yasar Demirel, Mustafa OzilgenThe study of thermodynamic aspects of the lipid, e.g., raw material for biodiesel, production in microalgae is important, as the non-lipid producing biological activities of the algal cultivation consume part of the solar energy captured during photosynthesis in expense of the exergetic efficiency of the lipid production process. The cultivation of Chlamydomonas reinhardtii (a unicellular biflagellate fresh-water microalga) is modeled as a three-step chemical mechanism representing growth, respiration, and lipid production. Further, the comprehensive thermodynamic analysis of these mechanisms is presented. The cumulative degree of perfection of the cellular proliferation, after excluding the lipid synthesis, fluctuates with no trend around 0.52 ± 0.19. The exergy analysis has indicated that C. reinhardtii prefers to maximize the lipid production when it is difficult to generate new cells. Under batch production of algal biomass, the highest heat and exergy loss per unit biomass production are accountable under the most favorable biological growth conditions, whereas the highest exergetic efficiency of the lipid production accounted under the least favorable growth conditions, which is in line with the previous studies.
History
Publication status
- Published
Journal
EnergyISSN
0360-5442Publisher
ElsevierExternal DOI
Volume
83Page range
503-510Department affiliated with
- Engineering and Design Publications
Research groups affiliated with
- Thermo-Fluid Mechanics Research Centre Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2018-12-04Usage metrics
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