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70% confidence

Co-culturing Chlorella vulgaris and Cystobasidium oligophagum JRC1 in an MFC cathode enhances lipid output by 28.33% and total energy output by 1.4-fold compared to algae alone.

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Distribution

Reported parameters

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Coulombic efficiency8.33%

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What they did

System
MFC
Substrate
pure compound

What worked

No outcome metrics extracted yet.

Abstract

Abstract This present study investigated the effect of co-culturing the photobiont and mycobiont in the microbial fuel cell (MFC) cathode for lipid generation. Chlorella vulgaris provides oxygen and nutrients for the yeast Cystobasidium oligophagum JRC1 while latter provides CO 2 and quench oxygen for higher algae growth. Co-culture enhanced the lipid output of biomass by 28.33%. The total lipid yield and productivity with co-culture were 1.47 ± 0.18 g/L and 0.123 g/L/day respectively. The MFC attained open circuit voltage of 685 ± 11 mV. Synthetic wastewater was used at the anode with sodium acetate as a substrate. The power density of the system was 5.37 ± 0.21 mW m -2 with 75.88 ± 1.89% of COD removal. The total energy output (Lipid + Electrical energy) from the co-culture MFC was 11.5 ± 0.035 kWh m -3 which was 1.4-fold higher than algae alone.

Key findings

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Keywords

Chlorella vulgarisMicrobial fuel cellAlgaeBiomass (ecology)BotanyAnode

Identifiers

DOI
10.21203/rs.3.rs-2638324/v1
Journal
Research Square
Year
2023