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A photosynthetic microbial fuel cell (PMFC) using Chlamydomonas reinhardtii at the cathode achieved power and current density of 15.21 W/m⁻³ and 39 A/m⁻³, respectively.

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Coulombic efficiency9.068%

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What they did

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Abstract

This study reports the use of Chlamydomonas reinhardtiiat the cathode in a photosynthetic microbial fuel cell (PMFC). The PMFC produced power and current density of 15.21 W m⁻³ and 39 A m⁻³, respectively. The specific growth rate of algae culture at the cathode was 0.284 day⁻¹. The system achieved COD removal at 73.30% with a Coulombic efficiency of 9.068%. The usability of algae biomass was assessed in terms of its total phenol content (157.69 mg GAE/g algae DW), antioxidant activity (IC50 = 67.07 µg/ml), total Chlorophyll (18.95 mg/g), total Carotenoids (2.40 mg/g), and antibacterial properties against known pathogens. Overall, the study's findings suggested thatC. reinhardtiisupports high power output from a PMFC and is highly resourceful in terms of value-added products.

Key findings

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Keywords

Chlamydomonas reinhardtiiMicrobial fuel cellPhotosynthesisAlgaeGreen algaeBiomass (ecology)

Identifiers

DOI
10.1016/j.biortech.2021.125499
PubMed
34260967
Journal
Bioresource technology
Year
2020