Møller, Henrik B. (2025) Videreudvikling af plantebaseret biogas: Clover Value (WP2). [Further Development of Plant-Based Biogas: Clover Value (WP2).] Innovationcenter for Organic Farming, ICOEL.dk.
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Summary
Denne præsentation beskriver udviklingen af plantebaseret biogas med fokus på anvendelse af kløvergræs som primært substrat. Arbejdet indgår i Clover Value-projektet og undersøger mulighederne for at producere biogas og plantebaseret gødning uden anvendelse af husdyrgødning. Resultater og analyser viser, at kløvergræs kan levere betydelige mængder kvælstof (ca. 100–200 kg N/ha), som via biogasprocessen kan omdannes til en mere plantetilgængelig form med høj ammoniumandel. Projektet arbejder med avancerede procesløsninger, herunder to-trins reaktorsystemer (termofile og mesofile processer), recirkulering af væskefraktioner samt efterbehandlingsteknologier som separation og ammoniakstripning. De foreløbige resultater indikerer, at kløvergræs potentielt kan anvendes som eneste biomasseinput i biogasanlæg ved optimeret processtyring og recirkulering. Samtidig muliggør teknologierne produktion af differentierede gødningsprodukter med forbedret næringsstofudnyttelse og lavere klimaaftryk. Samlet set bidrager arbejdet til udviklingen af bæredygtige, plantebaserede biogassystemer, som kan understøtte økologisk planteavl uden husdyr og reducere afhængigheden af eksterne næringsstofkilder.
Summary translation
This presentation outlines the development of plant-based biogas systems using clover grass as the primary substrate within the Clover Value project. The work explores the potential to produce biogas and plant-based fertilizers without relying on animal manure. Results indicate that clover grass can supply substantial amounts of nitrogen (approximately 100–200 kg N/ha), which can be converted into more plant-available forms with a high ammonium fraction through anaerobic digestion. The project investigates advanced process configurations, including two-stage reactor systems (thermophilic and mesophilic), liquid fraction recycling, and post-treatment technologies such as separation and ammonia stripping. Preliminary findings suggest that clover grass may function as a sole substrate in biogas production when process conditions are optimized. Additionally, the system enables the production of tailored fertilizer products with improved nutrient efficiency and reduced carbon footprint. Overall, the work contributes to the development of sustainable plant-based biogas systems that can support organic arable farming without livestock and reduce dependency on external nutrient inputs.
| EPrint Type: | Other |
|---|---|
| Agrovoc keywords: | Language Value URI English biogas http://aims.fao.org/aos/agrovoc/c_9262 English grass clover http://aims.fao.org/aos/agrovoc/c_cdb03095 English thermophilic microorganisms http://aims.fao.org/aos/agrovoc/c_24092 |
| Subjects: | Farming Systems > Buildings and machinery Farming Systems > Farm nutrient management |
| Research affiliation: | Denmark > AU - Aarhus University > AU, DJF - Faculty of Agricultural Sciences Denmark > AU - Aarhus University > Faculty of Science and Technology > Department of Agroecology Denmark > Organic RDD 10 > CLOVERVALUE Denmark > AU - Aarhus University > AU, NERI - National Environmental Research Institute |
| Deposited By: | Winther Vestenaa, Mr Morten |
| ID Code: | 57480 |
| Deposited On: | 20 Apr 2026 12:51 |
| Last Modified: | 20 May 2026 07:28 |
| Document Language: | Danish/Dansk |
| Status: | Published |
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