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Microbial Fuel Cells as CO 2 Source in the Autotrophic Cultivation of the Green Microalgae Tetraselmis subcordiformis : Impact on Biomass Growth, Nutrient Removal, and Hydrogen Production

Author

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  • Marcin Zieliński

    (Department of Environmental Engineering, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, Poland)

  • Łukasz Barczak

    (Department of Environmental Engineering, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, Poland)

  • Paulina Rusanowska

    (Department of Environmental Engineering, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, Poland)

  • Anna Nowicka

    (Department of Environmental Engineering, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, Poland)

  • Marcin Dębowski

    (Department of Environmental Engineering, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, Poland)

Abstract

Carbon dioxide (CO 2 ) is often a limiting factor for the growth of microalgal biomass. Consequently, the search for new CO 2 sources that do not contain components inhibitory to microalgal metabolism remains a priority. An alternative to the solutions tested thus far may involve the use of CO 2 -rich gas derived from microbial fuel cells (MFCs). This concept served as the basis for the original experimental work described in this study. The objective of the research was to evaluate the effect of using gases from the anode chamber of an MFC as a CO 2 source in the autotrophic cultivation of Tetraselmis subcordiformis . The highest biomass growth efficiency was observed when the CO 2 concentration in the culture medium was maintained at 220.0 ± 8.0 mg/L. Under these conditions, the microalga proliferation rate reached 0.52 ± 0.03 g VS/(L∙day) and 11.54 ± 0.42 mg chl-a/(L∙day), with a final biomass concentration of 2.68 ± 0.10 g VS/L and 63.53 ± 2.44 mg chl-a/L at the end of the cultivation cycle. Moreover, the highest total hydrogen (H 2 ) production of 312 ± 38 mL was achieved in the same experimental variant, corresponding to an H 2 production rate of 62.4 ± 6.1 mL/day. The removal efficiency of ammonium nitrogen (N-NH 4 ) was notably high in experimental variants using MFC-derived biogas, ranging from 97.0 ± 2.2% to 98.2 ± 1.8%. Additionally, the growing microalgal biomass effectively utilized phosphate phosphorus (P-PO 4 ) and iron, further highlighting its potential for nutrient recovery.

Suggested Citation

  • Marcin Zieliński & Łukasz Barczak & Paulina Rusanowska & Anna Nowicka & Marcin Dębowski, 2025. "Microbial Fuel Cells as CO 2 Source in the Autotrophic Cultivation of the Green Microalgae Tetraselmis subcordiformis : Impact on Biomass Growth, Nutrient Removal, and Hydrogen Production," Energies, MDPI, vol. 18(4), pages 1-19, February.
  • Handle: RePEc:gam:jeners:v:18:y:2025:i:4:p:874-:d:1589646
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    References listed on IDEAS

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    1. Antony V. Samrot & Deenadhayalan Rajalakshmi & Mahendran Sathiyasree & Subramanian Saigeetha & Kasirajan Kasipandian & Nachiyar Valli & Nellore Jayshree & Pandurangan Prakash & Nagarajan Shobana, 2023. "A Review on Biohydrogen Sources, Production Routes, and Its Application as a Fuel Cell," Sustainability, MDPI, vol. 15(16), pages 1-21, August.
    2. Nazarpour, Mehrshad & Taghizadeh-Alisaraei, Ahmad & Asghari, Ali & Abbaszadeh-Mayvan, Ahmad & Tatari, Aliasghar, 2022. "Optimization of biohydrogen production from microalgae by response surface methodology (RSM)," Energy, Elsevier, vol. 253(C).
    3. Marcin Dębowski & Magda Dudek & Joanna Kazimierowicz & Piera Quattrocelli & Paulina Rusanowska & Łukasz Barczak & Anna Nowicka & Marcin Zieliński, 2024. "Analysis of Multi-Biofuel Production during Cultivation of the Green Microalga Tetraselmis subscordiformis," Energies, MDPI, vol. 17(15), pages 1-20, July.
    4. Magda Dudek & Marcin Dębowski & Joanna Kazimierowicz & Marcin Zieliński & Piera Quattrocelli & Anna Nowicka, 2022. "The Cultivation of Biohydrogen-Producing Tetraselmis subcordiformis Microalgae as the Third Stage of Dairy Wastewater Aerobic Treatment System," Sustainability, MDPI, vol. 14(19), pages 1-17, September.
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