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ECOFERMThe circular farmJan de Wilt, Netherlands
Conference “Biorefinery for Food & Fuels & Materials”Montpellier, 15-17th June 2015
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• Developing and implementing
groundbreaking innovations in agriculture
• 8 employees, large network
• Public funding
• Budget € 3 million per year
InnovationNetwork
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Content presentation
1. Why circular farming?
2. What is ECOFERM – the circular farm?
3. What is the potential of ECOFERM?
4. What are major challenges?
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Why circular farming?
• More efficient use of resources
• Less emissions to the environment
• Better income for the farmer
• Improving self-sufficiency
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Low efficiency feed to meat
Feed 100%
Heat 60%
Manure 20%
Meat 20%
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Nitrogen and phosphate production
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Closing the circles
EnergyWaterNutrients (N,P,K)CO2
What is ECOFERM?
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ECOFERM
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Aerial view ECOFERM
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Front of ECOFERM
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Veal calves
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Separation of manure
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Manure digester
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Biogas storage
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Gas turbine
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Hot water storage
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Animation ECOFERM
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Biobed
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Duckweed in the greenhouse
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Duckweed pond
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Duckweed
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Algae tubes
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Collection of algae water
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Feeding algae water to the calves
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What is the potential of ECOFERM?
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Nitrogen flows (ton/year for 1000 calves)
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product protein content yield (t dm/ha) protein production (t/ha)soy bean 40% 2,5 1,0rape seed 25% 3 0,8sunflower 23% 3 0,7peas 22% 4,5 1,0beans 28% 4 1,1lupins 35% 2,5 0,9grass 12% 12,5 1,5lucerne 19% 13 2,5sugar beet leaves 12% 4,5 0,5micro-algae 50% 15 7,5duckweed 30% 25 7,5wheat 11% 10 1,1
Duckweed/algae: high in protein
Amino acid composition
Uptake of Nitrogen
Duckweed (inside)25 ton dm/ha30% = 7,5 ton protein/ha
1.2 ton N/ha
Duckweed (outside)15 ton dm/ha30% = 4,5 ton protein/ha
0.72 ton N/ha
Algae (tubes) 1 ha = 333 km tube with diameter of 6 cm44 ton dm/ha26.9 ton protein/ha (Chlorella)
4.22 ton N/ha
In comparison: Grass10 ton dm/ha2 ton protein/ha0.314 ton N/ha
Configurations of algae tubes
Scale needed for recycling N from liquid fraction
0.4 ha duckweed inside
10 ton dm, 3 ton protein, 0.48 ton N
5 ha duckweed pond outside
75 ton dm, 22.5 ton protein, 3.6 ton N
220 km algae tubes (diameter 6 cm)
29 ton dm, 17.7 ton protein, 2.8 ton N
Benefits ECOFERM
• Better production results• Positive health effects • Saving costs of manure disposal• Revenues from organic fertilizer • Saving feeding costs• Energy production
• Management of duckweed and algae• Growing conditions (light, CO2, temperature)• Growth medium• Harvesting
• Food safety aspects• Regulatory aspects
• Environment• Landscape
Challenges
Participants
Thank you for your attention!
QUESTIONS
Video on Youtube (10 minutes, subtitles)
https://www.youtube.com/watch?v=d7x5e9oKBJU
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