Ecological intensification by integrating biogas production into nutrient cycling: Modeling the case of Agroecological Symbiosis

Kari Koppelmäki, Tuure Parviainen, Elina Virkkunen, Erika Winquist, Rogier P.O. Schulte, Juha Helenius

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

There is growing demand to produce both food and renewable energy in a sustainable manner, while avoiding competition between food and energy production. In our study, we investigated the potential of harnessing biogas production into nutrient recycling in an integrated system of organic food production and food processing. We used the case of Agroecological Symbiosis (AES) at Palopuro, which is a combination of three farms, a biogas plant, and a bakery, as a case to explore how biogas production using feedstocks from the farms can be used to improve nutrient cycling, and to calculate how much energy could be produced from the within-system feedstocks. The current system (CS) used in organic farms, and the integrated farm and food processing AES system, were analyzed using Substance Flow analysis. In the AES, annual nitrogen (N) and phosphorus (P) surpluses were projected to be reduced from 95 kg ha−1 to 36 kg ha−1 and from 3.4 kg ha−1 to −0.5 kg ha−1 respectively, compared to the CS. Biogas produced from green manure leys as the major feedstock, produced 2809 MWh a−1. This was 70% more than the energy consumed (1650 MWh a−1) in the systemand thus the AES system turned out to be a net energy producer. Results demonstrated the potential of biogas production to enhance the transition to bioenergy, nutrient recycling, and crop productivity in renewable localized farming and food systems.

Original languageEnglish
Pages (from-to)39-48
Number of pages10
JournalAgricultural Systems
Volume170
DOIs
Publication statusPublished - 1 Mar 2019
MoE publication typeA1 Journal article-refereed

Fingerprint

biogas
symbiosis
biogeochemical cycles
feedstocks
farms
energy
food processing
recycling
material flow analysis
organic foods
green manures
nutrients
renewable energy sources
bioenergy
surpluses
food production
farming systems
phosphorus
nitrogen
crops

Keywords

  • Biological nitrogen fixation
  • Localized agrifood system
  • Nutrient losses
  • Organic farming
  • Renewable energy
  • Sustainable intensification

Cite this

Koppelmäki, Kari ; Parviainen, Tuure ; Virkkunen, Elina ; Winquist, Erika ; Schulte, Rogier P.O. ; Helenius, Juha. / Ecological intensification by integrating biogas production into nutrient cycling : Modeling the case of Agroecological Symbiosis. In: Agricultural Systems. 2019 ; Vol. 170. pp. 39-48.
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Ecological intensification by integrating biogas production into nutrient cycling : Modeling the case of Agroecological Symbiosis. / Koppelmäki, Kari; Parviainen, Tuure; Virkkunen, Elina; Winquist, Erika; Schulte, Rogier P.O.; Helenius, Juha.

In: Agricultural Systems, Vol. 170, 01.03.2019, p. 39-48.

Research output: Contribution to journalArticleScientificpeer-review

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