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Advances and Challenges in Biohydrogen Production by Photosynthetic Microorganisms

Author

Listed:
  • Cecilia Faraloni

    (Istituto per la Bioeconomia, Consiglio Nazionale delle Ricerche, Via Madonna del Piano 10, Sesto Fiorentino, 50019 Firenze, Italy)

  • Giuseppe Torzillo

    (Istituto per la Bioeconomia, Consiglio Nazionale delle Ricerche, Via Madonna del Piano 10, Sesto Fiorentino, 50019 Firenze, Italy
    Centro de Investigación en Ciencias del Mary Limnología, Universidad de Costa Rica, San Pedro, San Jose 2060, Costa Rica)

  • Francesco Balestra

    (Istituto per la Bioeconomia, Consiglio Nazionale delle Ricerche, Via Madonna del Piano 10, Sesto Fiorentino, 50019 Firenze, Italy)

  • Isabela Calegari Moia

    (Istituto di Ricerca sugli Ecosistemi Terrestri, Consiglio Nazionale delle Ricerche, Via Madonna del Piano 10, Sesto Fiorentino, 50019 Firenze, Italy)

  • Raffaella Margherita Zampieri

    (Istituto di Ricerca sugli Ecosistemi Terrestri, Consiglio Nazionale delle Ricerche, Via Madonna del Piano 10, Sesto Fiorentino, 50019 Firenze, Italy
    Dipartimento di Scienze e Tecnologie Agrarie, Alimentari, Ambientali e Forestali, Università degli Studi di Firenze, Via San Bonaventura 13, 50145 Firenze, Italy)

  • Natalia Jiménez-Conejo

    (Centro de Investigación en Ciencias del Mary Limnología, Universidad de Costa Rica, San Pedro, San Jose 2060, Costa Rica)

  • Eleftherios Touloupakis

    (Istituto di Ricerca sugli Ecosistemi Terrestri, Consiglio Nazionale delle Ricerche, Via Madonna del Piano 10, Sesto Fiorentino, 50019 Firenze, Italy)

Abstract

Hydrogen (H 2 ) production by photosynthetic microorganisms is a viable option for renewable energy due to its sustainability and potential for widespread application. Green algae, cyanobacteria, and purple non-sulfur bacteria have shown great promise in bio-H 2 production. However, problems such as low H 2 production rates and high H 2 production costs continue to hinder the commercial scalability of these systems. To overcome these obstacles, genetic engineering selection of robust strains capable of coping with variable environmental conditions, optimization of growth conditions, use of wastewater, and biotechnological approaches such as immobilization are carefully considered. The aim of this review is to provide a thorough overview of the methods and developments that can improve H 2 production and to highlight current difficulties and future directions for further studies.

Suggested Citation

  • Cecilia Faraloni & Giuseppe Torzillo & Francesco Balestra & Isabela Calegari Moia & Raffaella Margherita Zampieri & Natalia Jiménez-Conejo & Eleftherios Touloupakis, 2025. "Advances and Challenges in Biohydrogen Production by Photosynthetic Microorganisms," Energies, MDPI, vol. 18(9), pages 1-25, May.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:9:p:2319-:d:1647830
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    References listed on IDEAS

    as
    1. Nicodemus, Julia Haltiwanger, 2018. "Technological learning and the future of solar H2: A component learning comparison of solar thermochemical cycles and electrolysis with solar PV," Energy Policy, Elsevier, vol. 120(C), pages 100-109.
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