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Short-Term Nitrogen Uptake of Barley from Differently Processed Biogas Digestate in Pot Experiments

Author

Listed:
  • Claudia Maurer

    (Institute of Agricultural Engineering, Tropics and Subtropics Group (440e), University of Hohenheim, Garbenstraße 9, D-70599 Stuttgart, Germany
    Institute for Sanitary Engineering, Water Quality and Solid Waste Management, Chair of Waste Management and Emissions, University of Stuttgart, Bandtäle 2, D-70569 Stuttgart, Germany)

  • Julia Seiler-Petzold

    (Institute of Agricultural Engineering, Tropics and Subtropics Group (440e), University of Hohenheim, Garbenstraße 9, D-70599 Stuttgart, Germany)

  • Rudolf Schulz

    (Institute of Crop Science, Fertilization and Soil Matter Dynamics (340i), University of Hohenheim, Fruwirthstraße 20, D-70599 Stuttgart, Germany)

  • Joachim Müller

    (Institute of Agricultural Engineering, Tropics and Subtropics Group (440e), University of Hohenheim, Garbenstraße 9, D-70599 Stuttgart, Germany)

Abstract

The use of biogas digestate as fertilizer is limited by the farm nutrient balance. Mechanical separation and drying of digestate increases its transport worthiness as well as the economic feasibility of nutrient export. This study compares the fertilizer effect of four treatments of digestate originating from two biogas plants: untreated digestate, liquid and solid fraction of separated digestate and dried solid fraction of separated digestate. Pot experiments with barley were performed with two fertilization levels for different digestate variants. Above-ground biomass yield, nitrogen (N) and phosphorus (P) content in biomass and plant uptake efficiency were highlighted. The results showed that all variants have higher above-ground biomass yield than the control. Due to the reduced amount of easily available N, short-term N uptake of barley from solid fractions of digestate was low. The treatments with the dried solid fraction at low fertilization level showed up to 59% lower N removal from soil and, at high fertilization level, up to 83% lower N removal compared to the respective fresh solid fraction (100%). Depending on the feedstock of biogas plants and processing of digestate, N availability varied and influenced the short-term N uptake. It is recommended that digestate processing should be combined with ammonia recovery to prevent N losses to the environment.

Suggested Citation

  • Claudia Maurer & Julia Seiler-Petzold & Rudolf Schulz & Joachim Müller, 2019. "Short-Term Nitrogen Uptake of Barley from Differently Processed Biogas Digestate in Pot Experiments," Energies, MDPI, vol. 12(4), pages 1-14, February.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:4:p:696-:d:207869
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    References listed on IDEAS

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    1. Na Duan & Xia Ran & Ruirui Li & Panagiotis G. Kougias & Yuanhui Zhang & Cong Lin & Hongbin Liu, 2018. "Performance Evaluation of Mesophilic Anaerobic Digestion of Chicken Manure with Algal Digestate," Energies, MDPI, vol. 11(7), pages 1-11, July.
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    Cited by:

    1. Hongzhen Luo & Ana A. Robles-Aguilar & Ivona Sigurnjak & Evi Michels & Erik Meers, 2021. "Assessing Nitrogen Availability in Biobased Fertilizers: Effect of Vegetation on Mineralization Patterns," Agriculture, MDPI, vol. 11(9), pages 1-18, September.
    2. Afifi Akhiar & Felipe Guilayn & Michel Torrijos & Audrey Battimelli & Abd Halim Shamsuddin & Hélène Carrère, 2021. "Correlations between the Composition of Liquid Fraction of Full-Scale Digestates and Process Conditions," Energies, MDPI, vol. 14(4), pages 1-24, February.
    3. Alexandros Yfantis & Nikos Yfantis & Triantafyllia Angelakopoulou & George Giannakakis & Fabien Michelet & Spyros Dokianakis & Evangelia Vasilaki & Nikos Katsarakis, 2022. "Industrial Pilot for Assessment of Polymeric and Ceramic Membrane Efficiency in Treatment of Liquid Digestate from Biogas Power Plant," Energies, MDPI, vol. 15(18), pages 1-16, September.
    4. Agnieszka Urbanowska & Małgorzata Kabsch-Korbutowicz, 2021. "The Use of Flat Ceramic Membranes for Purification of the Liquid Fraction of the Digestate from Municipal Waste Biogas Plants," Energies, MDPI, vol. 14(13), pages 1-12, July.

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