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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 Ozilgen
The 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

Energy

ISSN

0360-5442

Publisher

Elsevier

Volume

83

Page range

503-510

Department 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

2018-12-04

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