Evaluation of the Growth Performance of Microalgae Based on Fine pH Changes
Open accessAbstract
Microalgae are photosynthetic microorganisms with many potential applications in the food, cosmetics, pharmaceutical and environmental industries. Currently, commercial microalgae production remains limited. Therefore, improving the growth and the culture density of the microalgae cultivation is one of the key enablers to open the way to mass production and commercialisation of these microorganisms. The effect of culture pH on the photoautotrophic growth of C. vulgaris over a large range of values has been investigated in pH-regulated cultures. For each microalgae culture, the specific growth rate, the cell density, the chlorophyll content, the intracellular carbon content and the nitrogen source consumption were monitored. Optimal growth and carbon incorporation have been observed at pH of 7.0. The fastest growth rate and highest biomass production of C. vulgaris were 0.074 h-1 and 0.896 g/L respectively. Under these conditions, a maximum carbon content of cells was 49 % (w/w).
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The assimilation of carbon dioxide and increased oxygen production by microalgae during photosynthesis can lead to significant fluctuations in pH, with values rising to 10-11 in both open systems and closed PBRs.
“The assimilation of carbon dioxide and increased oxygen production by microalgae during photosynthesis can lead to significant fluctuations in pH, with values rising to 10-11 in both open systems and closed PBRs [128].”
From Multi-Sensing Monitoring of the Microalgae Biomass Cultivation Systems for Biofuels and Added Value Products Synthesis—Challenges and Opportunities (2025) · cites this paper as [128]
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Pulz, O., & Gross, W. (2004) · Applied Microbiology and Biotechnology · doi:10.1007/s00253-004-1647-x · Cited by 2,132 · see citing works
Juneja, A., Ceballos, R., & Murthy, G. (2013) · Energies · doi:10.3390/en6094607 · Cited by 835 · see citing works
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Dębowski, M., Kazimierowicz, J., & Zieliński, M. (2025) · Applied Sciences · doi:10.3390/app15137324 · Cited by 30 · see citing works
- Authors
- LGPM, C., R, F., H, T., ENCIACET, 4., E, M., LGPM, C., B, T., & LGPM, C.
- Affiliations
- CentraleSupélec (FR)
- Venue
- Austin Journal of Biotechnology & Bioengineering
- Publisher
- Austin Journals
- Published
- 2021-06-08
- Volume
- 8
- Issue
- 1
- ISSN
- 2378-3036 (ISSN-L)
- OpenAlex
- W3183085670
- Cited by
- 23
- References
- 2
- Citations by year
- 2026: 2 · 2025: 8 · 2024: 5 · 2023: 7 · 2022: 1
- FWCI
- 0.61
- Type
- journal article
- Language
- en
- Open access
- green
- hal.science
- Licence
- other-oa
- Locations
- Austin Journal of Biotechnology & Bioengineering (publishedVersion)
- HAL (submittedVersion)
- HAL (submittedVersion, other-oa)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
- Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Aquaculture Nutrition and Growth
- Keywords
- microalgae cultivation, culture medium pH, Chlorella vulgaris, photoautotrophic growth, specific growth rate, biomass production, chlorophyll content, nitrogen intake
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