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Biogas potential of green biomass after protein extraction in an organic biorefinery concept for feed, fuel and fertilizer production

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  • Santamaría-Fernández, M.
  • Molinuevo-Salces, B.
  • Lübeck, M.
  • Uellendahl, H.

Abstract

The biogas potential of the residual fractions of four organically grown green crops after protein extraction was studied. The protein extraction method involved screw pressing of freshly harvested biomass to obtain a plant juice, followed by precipitation of the proteins. After protein extraction, 95% of organic matter was still present in the residual press cake and juice. Methane yields in the range of 219–375 and 429–539 ml-CH4 g-VS−1 were obtained for the mono-digestion of press cake and the residual juice, respectively, and up to 81% of the methane potential of the fresh crops was recovered in the two residual fractions when evaluated separately. Co-digestion of the press cake and the residual juice at the organic matter ratio at which those fractions leave the biorefinery, resulted in a methane yield of 400 ml-CH4 g-VS−1 according to the regression model equation developed for red clover. Consequently, 65% of the methane potential from fresh red clover could be recovered by co-digestion of the residual fractions from the green biorefinery after extraction of proteins.

Suggested Citation

  • Santamaría-Fernández, M. & Molinuevo-Salces, B. & Lübeck, M. & Uellendahl, H., 2018. "Biogas potential of green biomass after protein extraction in an organic biorefinery concept for feed, fuel and fertilizer production," Renewable Energy, Elsevier, vol. 129(PB), pages 769-775.
    • Handle: RePEc:eee:renene:v:129:y:2018:i:pb:p:769-775
    DOI: 10.1016/j.renene.2017.03.012
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    Cited by:

    1. Dannylo Sousa & Matilda Larsson & Elisabet Nadeau, 2021. "Milk Production of Dairy Cows Fed Grass-Clover Silage Pulp," Agriculture, MDPI, vol. 12(1), pages 1-11, December.
    2. Hashemi, Seyed Sajad & Mirmohamadsadeghi, Safoora & Karimi, Keikhosro, 2020. "Biorefinery development based on whole safflower plant," Renewable Energy, Elsevier, vol. 152(C), pages 399-408.
    3. Marleen Elise van der Heide & Lene Stødkilde & Jan Værum Nørgaard & Merete Studnitz, 2021. "The Potential of Locally-Sourced European Protein Sources for Organic Monogastric Production: A Review of Forage Crop Extracts, Seaweed, Starfish, Mussel, and Insects," Sustainability, MDPI, vol. 13(4), pages 1-30, February.
    4. James Gaffey & Cathal O’Donovan & Declan Murphy & Tracey O’Connor & David Walsh & Luis Alejandro Vergara & Kwame Donkor & Lalitha Gottumukkala & Sybrandus Koopmans & Enda Buckley & Kevin O’Connor & Jo, 2023. "Synergetic Benefits for a Pig Farm and Local Bioeconomy Development from Extended Green Biorefinery Value Chains," Sustainability, MDPI, vol. 15(11), pages 1-22, May.
    5. Jakob Hoffmann & Johannes Glückler, 2023. "Technological Cohesion and Convergence: A Main Path Analysis of the Bioeconomy, 1900–2020," Sustainability, MDPI, vol. 15(16), pages 1-17, August.
    6. Rajeev Ravindran & Kwame Donkor & Lalitha Gottumukkala & Abhay Menon & Amita Jacob Guneratnam & Helena McMahon & Sybrandus Koopmans & Johan P. M. Sanders & James Gaffey, 2022. "Biogas, Biomethane and Digestate Potential of By-Products from Green Biorefinery Systems," Clean Technol., MDPI, vol. 4(1), pages 1-16, January.
    7. Susanne Theuerl & Christiane Herrmann & Monika Heiermann & Philipp Grundmann & Niels Landwehr & Ulrich Kreidenweis & Annette Prochnow, 2019. "The Future Agricultural Biogas Plant in Germany: A Vision," Energies, MDPI, vol. 12(3), pages 1-32, January.

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