Aarhus University Seal / Aarhus Universitets segl

Eco-efficient post treatment of digestate from farm and collective biogas plants to improve nutrients (N&P) recycling

Research output: Contribution to conferenceConference abstract for conferenceResearch

  • Anne Trémier, IRSTEA – National Research Institute of Science and Technology for Environment and Agriculture
  • ,
  • Fabrice Béline, IRSTEA – National Research Institute of Science and Technology for Environment and Agriculture
  • ,
  • Claire Déchaux, IRSTEA – National Research Institute of Science and Technology for Environment and Agriculture
  • ,
  • Lynda Aissan, IRSTEA – National Research Institute of Science and Technology for Environment and Agriculture
  • ,
  • Mette Hjorth Mikkelsen
  • Marianne Thomsen
Anaerobic digestion (AD) of organic waste from agriculture and others sectors is a widely used technology which shows increasing implementation due to its capacity to produce renewable energy and also to reduce greenhouse gas emissions from waste management. The development of AD is also an opportunity to improve nutrient recycling from organic waste through the development of an eco-effi cient post-treatment system. In this context,
LCA was applied to evaluate the sustainability of diff erent raw digestate post-treatment technologies regarding recycling of nutrients from agricultural and organic waste to agricultural soils for decreased resource depletion and climate mitigation. Substitution of the use of N and P mineral fertilizers with recycled soil health improver or organic fertilizers products as function of fi ve diff erent post-treatment technologies and raw digestate characteristics was evaluated.
A particular attention was carried to (1) the gaseous emissions (NH3 and N2O) from process (post-treatment) but also after land spreading and (2) the carbon cycle considering the CO2 carbon costs of fertiliser production and the soil carbon sequestration benefit.
Original languageEnglish
Publication year1 Oct 2013
Publication statusPublished - 1 Oct 2013
EventSCIENCE FOR THE ENVIRONMENT: MAPPING KNOWLEDGE NEEDS FOR FUTURE HORIZONS - Århus Universitet, Århus, Denmark
Duration: 2 Oct 20134 Oct 2013
Conference number: 2ND INTERNATIONAL CONFERENCE

Conference

ConferenceSCIENCE FOR THE ENVIRONMENT
Number2ND INTERNATIONAL CONFERENCE
LocationÅrhus Universitet
CountryDenmark
CityÅrhus
Period02/10/201304/10/2013

See relations at Aarhus University Citationformats

Projects

ID: 56266771