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Volume 17
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10.3390/en17194911
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Transforming Wastewater into Biofuel: Nutrient Removal and Biomass Generation with Chlorella vulgaris

by
Jose Luis Salgueiro
1,
Leticia Perez-Rial
2,
Rocio Maceiras
2,*,
Angel Sanchez
1 and
Angeles Cancela
1
1
Chemical Engineering Department, School of Industrial Engineering (EEI), University of Vigo, 36310 Vigo, Spain
2
Defense University Center, Escuela Naval Militar, Plaza de España 2, 36920 Marín, Spain
*
Author to whom correspondence should be addressed.
Energies 2024, 17(19), 4911; https://doi.org/10.3390/en17194911
Submission received: 9 September 2024 / Revised: 24 September 2024 / Accepted: 26 September 2024 / Published: 30 September 2024
(This article belongs to the Special Issue Biomass for Biodiesel and Bioethanol Production)
Versions Notes

Abstract

This study investigates the potential of Chlorella vulgaris for nutrient removal and biomass production in synthetic wastewater. The experiments were conducted in 2 L photobioreactors under controlled aeration, agitation, and lighting conditions for 19 days. Despite a moderate growth rate (0.137 d⁻¹), C. vulgaris achieved efficient pollutant removal, with 97% of nitrate, 90% of nitrite, and 90.6% of COD eliminated. Additionally, the biomass was processed to extract fatty acids, yielding a 20% extraction rate, indicating its potential as a biofuel feedstock. These results demonstrate C. vulgaris’s dual function in wastewater remediation and biofuel production, presenting a sustainable and economically viable approach to addressing environmental challenges.
Keywords: Chlorella vulgaris; nutrients removal; microalgae growth; wastewater; algal biomass Chlorella vulgaris; nutrients removal; microalgae growth; wastewater; algal biomass

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MDPI and ACS Style

Salgueiro, J.L.; Perez-Rial, L.; Maceiras, R.; Sanchez, A.; Cancela, A. Transforming Wastewater into Biofuel: Nutrient Removal and Biomass Generation with Chlorella vulgaris. Energies 2024, 17, 4911. https://doi.org/10.3390/en17194911

AMA Style

Salgueiro JL, Perez-Rial L, Maceiras R, Sanchez A, Cancela A. Transforming Wastewater into Biofuel: Nutrient Removal and Biomass Generation with Chlorella vulgaris. Energies. 2024; 17(19):4911. https://doi.org/10.3390/en17194911

Chicago/Turabian Style

Salgueiro, Jose Luis, Leticia Perez-Rial, Rocio Maceiras, Angel Sanchez, and Angeles Cancela. 2024. "Transforming Wastewater into Biofuel: Nutrient Removal and Biomass Generation with Chlorella vulgaris" Energies 17, no. 19: 4911. https://doi.org/10.3390/en17194911

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