Production of microalgal biomass and lipids with superior biodiesel-properties by manipulating various trophic modes and simultaneously optimizing key energy sources

Wageeporn Maneechote, Benjamas Cheirsilp, Naruepon Liewtrakul, Sirasit Srinuanpan, Wasu Pathom-aree and Neeranuch Phusunti

Renewable Energy, 2023, vol. 202, issue C, 797-808

Abstract: Two promising oleaginous microalgae, Scenedesmus sp. SPP and marine Chlorella sp. were cultivated under various trophic modes. Both microalgae grew best under mixotrophic/nitrogen-rich mode, indicating good metabolisms of both inorganic (CO2) and organic (glucose) carbon sources. While mixotrophic/nitrogen-starvation conditions promoted the accumulation of lipids with superior biodiesel properties. The key energy sources, including light intensity, CO2 and glucose concentrations, for mixotrophic cultivation of the selected Scenedesmus sp. SPP was simultaneously optimized by Response Surface Methodology. High light intensity combined with high CO2 retarded growth but stimulated lipid/pigment synthesis. Two-stage mixotrophic cultivation using optimal conditions for biomass (light intensity 4.8 klux, CO2 13%, glucose 1% under nitrogen-rich mode) followed by those for lipid accumulation (light intensity 6.0 klux, CO2 15%, glucose 1% under nitrogen-starvation mode) successfully enhanced biomass by 1.46 folds and lipids by 1.39 folds and also improved the biodiesel properties. These strategies may significantly contribute to the development of microalgae-based biofuel and biochemical industries.

Keywords: Biodiesel; Lipids; Mixotrophic mode; Nitrogen starvation; Oleaginous microalgae (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148122017955
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:renene:v:202:y:2023:i:c:p:797-808

DOI: 10.1016/j.renene.2022.12.011

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

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