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Article

Efficiency of Photosynthetic Microbial Fuel Cells (pMFC) Depending on the Type of Microorganisms Inhabiting the Cathode Chamber

by
Marcin Zieliński
,
Paulina Rusanowska
,
Magda Dudek
,
Adam Starowicz
,
Łukasz Barczak
and
Marcin Dębowski
*
Department of Environment Engineering, University of Warmia and Mazury in Olsztyn, Warszawska 117, 10-720 Olsztyn, Poland
*
Author to whom correspondence should be addressed.
Energies 2024, 17(10), 2296; https://doi.org/10.3390/en17102296
Submission received: 11 April 2024 / Revised: 7 May 2024 / Accepted: 8 May 2024 / Published: 10 May 2024
(This article belongs to the Collection Energy Efficiency and Environmental Issues)
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Abstract

Photosynthetic microbial fuel cells (pMFCs) are hybrid systems that enable simultaneous wastewater treatment under anaerobic conditions and the generation of electricity by utilizing the potential difference in the anaerobic anode chamber and the oxygenated cathode chamber. Dairy wastewater with a concentration of 2000 mg COD/L was treated in the anode of a batch pMFC. In the cathode chamber, Chlorella vulgaris or Arthrospira platensis was cultivated in synthetic medium, and next in diluted effluent from the anode chamber. The highest power density of 91 mW/m2 was generated by the pMFC with the cultivation of Arthrospira platensis. Higher values of dissolved oxygen remained during the dark phase in the cathodic medium with Arthrospira platensis cultivation than with Chlorella vulgaris. This depletion of oxygen significantly decreased voltage generation, which during the light phase increased again to the maximum values. The COD removal achieved in the anodic chamber was 87%. The efficiency of nitrogen removal in the cathode chamber during the cultivation of Arthrospira platensis and Chlorella vulgaris was about 78% and 69%, respectively. The efficiency of phosphorus removal in the cathode chamber with the cultivation of Arthrospira plantensis and Chlorella vulgaris was 58% and 43%, respectively. This study has shown that the introduction of Arthrospira platensis into the cathode chamber is more effective than that of Chlorella vulgaris.
Keywords: photosynthetic microbial fuel cells; Chlorella vulgaris cultivation; Arthrospira platensis cultivation photosynthetic microbial fuel cells; Chlorella vulgaris cultivation; Arthrospira platensis cultivation

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MDPI and ACS Style

Zieliński, M.; Rusanowska, P.; Dudek, M.; Starowicz, A.; Barczak, Ł.; Dębowski, M. Efficiency of Photosynthetic Microbial Fuel Cells (pMFC) Depending on the Type of Microorganisms Inhabiting the Cathode Chamber. Energies 2024, 17, 2296. https://doi.org/10.3390/en17102296

AMA Style

Zieliński M, Rusanowska P, Dudek M, Starowicz A, Barczak Ł, Dębowski M. Efficiency of Photosynthetic Microbial Fuel Cells (pMFC) Depending on the Type of Microorganisms Inhabiting the Cathode Chamber. Energies. 2024; 17(10):2296. https://doi.org/10.3390/en17102296

Chicago/Turabian Style

Zieliński, Marcin, Paulina Rusanowska, Magda Dudek, Adam Starowicz, Łukasz Barczak, and Marcin Dębowski. 2024. "Efficiency of Photosynthetic Microbial Fuel Cells (pMFC) Depending on the Type of Microorganisms Inhabiting the Cathode Chamber" Energies 17, no. 10: 2296. https://doi.org/10.3390/en17102296

APA Style

Zieliński, M., Rusanowska, P., Dudek, M., Starowicz, A., Barczak, Ł., & Dębowski, M. (2024). Efficiency of Photosynthetic Microbial Fuel Cells (pMFC) Depending on the Type of Microorganisms Inhabiting the Cathode Chamber. Energies, 17(10), 2296. https://doi.org/10.3390/en17102296

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