TY - JOUR
T1 - Ecological intensification by integrating biogas production into nutrient cycling
T2 - Modeling the case of Agroecological Symbiosis
AU - Koppelmäki, Kari
AU - Parviainen, Tuure
AU - Virkkunen, Elina
AU - Winquist, Erika
AU - Schulte, Rogier P.O.
AU - Helenius, Juha
N1 - Funding Information:
We would like to thank the Ministry of the Environment in Finland for funding the Palopuro AES project. The authors also wish to thank all the participants in the Palopuro AES project: especially Markus Eerola from Knehtilä Farm, Virva Latostenmaa from Mäntymäen luomu ltd, Peter Zukale from Samsara ltd, and Jukka Kivelä from the University of Helsinki. We are also grateful for two anonymous reviewers who gave their comments.
Funding Information:
This work received funding from the Finnish Ministry of the Environment's Programme (RAKI2) to promote the recycling of nutrients and improve the ecological status of the Archipelago Sea [grant number YM52/481/2015 ].
Funding Information:
We would like to thank the Ministry of the Environment in Finland for funding the Palopuro AES project. The authors also wish to thank all the participants in the Palopuro AES project: especially Markus Eerola from Knehtilä Farm, Virva Latostenmaa from Mäntymäen luomu ltd, Peter Zukale from Samsara ltd, and Jukka Kivelä from the University of Helsinki. We are also grateful for two anonymous reviewers who gave their comments.This work received funding from the Finnish Ministry of the Environment's Programme (RAKI2) to promote the recycling of nutrients and improve the ecological status of the Archipelago Sea [grant number YM52/481/2015].
Publisher Copyright:
© 2018 The Authors
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/3/1
Y1 - 2019/3/1
N2 - 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.
AB - 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.
KW - Biological nitrogen fixation
KW - Localized agrifood system
KW - Nutrient losses
KW - Organic farming
KW - Renewable energy
KW - Sustainable intensification
UR - http://www.scopus.com/inward/record.url?scp=85059180145&partnerID=8YFLogxK
U2 - 10.1016/j.agsy.2018.12.007
DO - 10.1016/j.agsy.2018.12.007
M3 - Article
AN - SCOPUS:85059180145
SN - 0308-521X
VL - 170
SP - 39
EP - 48
JO - Agricultural Systems
JF - Agricultural Systems
ER -