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Solid and Liquid Phases of Anaerobic Digestate for Sustainable Use of Agricultural Soil

Author

Listed:
  • Alvyra Slepetiene

    (Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Akademija, 58344 Kedainiai, Lithuania)

  • Jurgita Ceseviciene

    (Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Akademija, 58344 Kedainiai, Lithuania)

  • Kristina Amaleviciute-Volunge

    (Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Akademija, 58344 Kedainiai, Lithuania)

  • Audrone Mankeviciene

    (Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Akademija, 58344 Kedainiai, Lithuania)

  • Irmantas Parasotas

    (Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Akademija, 58344 Kedainiai, Lithuania)

  • Aida Skersiene

    (Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Akademija, 58344 Kedainiai, Lithuania)

  • Linas Jurgutis

    (Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Akademija, 58344 Kedainiai, Lithuania)

  • Jonas Volungevicius

    (Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Akademija, 58344 Kedainiai, Lithuania)

  • Darijus Veteikis

    (Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Akademija, 58344 Kedainiai, Lithuania)

  • Ieva Mockeviciene

    (Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Akademija, 58344 Kedainiai, Lithuania)

Abstract

Given the growth in the number of biogas power plants and the increase in the generation of waste from energy production, it is relevant to study the sustainable nature of this waste. Digestate is a product of the anaerobic digestion process, and is a valuable bio-fertilizer containing organic matter and nutrients necessary for agricultural plants’ growth. The study showed that different rates of liquid and solid phases of anaerobic digestate influenced the contents of carbon and nitrogen in genetically young soil in alluvial deposits— Fluvisol . The application of solid digestate (SD) considerably increased soil organic carbon content (SOC) in the 0–10 cm soil layer; however, SOC did not reach the 20–30 cm layer. Liquid digestate (LD) significantly increased SOC in the deeper layers. The levels of mineral nitrogen (N min ) and water extractable organic carbon (WEOC) increased in the 0–10 cm soil layer soon after fertilization with LD and SD. The mobile components of the soil (N min and WEOC) were characterized by high variability during the growing season. Within the 2-month period, their concentrations decreased drastically and were close to those of unfertilized soil. The research indicates that anaerobic digestate had a greater effect on mobile forms of carbon and nitrogen in the soil than on their total amounts.

Suggested Citation

  • Alvyra Slepetiene & Jurgita Ceseviciene & Kristina Amaleviciute-Volunge & Audrone Mankeviciene & Irmantas Parasotas & Aida Skersiene & Linas Jurgutis & Jonas Volungevicius & Darijus Veteikis & Ieva Mo, 2023. "Solid and Liquid Phases of Anaerobic Digestate for Sustainable Use of Agricultural Soil," Sustainability, MDPI, vol. 15(2), pages 1-19, January.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:2:p:1345-:d:1031542
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    Citations

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    Cited by:

    1. Kristina Amaleviciute-Volunge & Jonas Volungevicius & Justinas Ceponkus & Rasa Platakyte & Ieva Mockeviciene & Alvyra Slepetiene & Viia Lepane, 2023. "The Impact of Profile Genesis and Land Use of Histosol on Its Organic Substance Stability and Humic Acid Quality at the Molecular Level," Sustainability, MDPI, vol. 15(7), pages 1-22, March.
    2. Grzegorz Łysiak & Ryszard Kulig & Alina Kowalczyk-Juśko, 2023. "Toward New Value-Added Products Made from Anaerobic Digestate: Part 2—Effect of Loading Level on the Densification of Solid Digestate," Sustainability, MDPI, vol. 15(9), pages 1-18, April.

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