Biomass producing and CO2 capturing simultaneously by Chlorella vulgaris: Effect of CO2 concentration and aeration rate

Xuan Wei, Guiyuan Yu, Wen Cao, Min Feng, Yutong Xu, Mingjie Jin, Yuxia Zhang, Tengteng Li and Liejin Guo

Energy, 2024, vol. 306, issue C

Abstract: Optimizing the operational parameters of the photosynthetic process is essential for effective microalgae-based CO2 capture and fixation. This study develops and validates models that can relate the effects of CO2 concentration and aeration rate on relevant microalgal properties, including biomass productivity and CO2 biofixation rate. The maximum biomass concentration was predicted as 2.80 g⋅L−1 at the optimal CO2 concentration of 10.2 % and aeration rate of 0.55 vvm. Based on the proposed models, the CO2 biofixation rate characterized by carbon content in dry microalgal cells, and the timings of microalgae entering the exponential growth and stationary growth phases were effectively predicted. Furthermore, the lower heating value of harvested microalgal biomass was up to 21.98 kJ⋅g−1 and the dominant fatty acid methyl esters (FAME) species were C16 – C18, highlighting the potential of Chlorella vulgaris as the feedstock for microalgae-based energy production. Consequently, microalgae present a remarkable dual function for CO2 mitigation and renewable bioenergy production.

Keywords: Microalgae; Modeling; CO2 biofixation; Combustion fuel; Biodiesel (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544224020954
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:306:y:2024:i:c:s0360544224020954

DOI: 10.1016/j.energy.2024.132321

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().