Aine Anderson


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In some locations across Northern Ireland (NI) there is too much manure material and associated nutrients being produced by livestock operations to be sustainably applied to farmland. This is evident through preliminary nutrient balance calculations, as well as in river and soil monitoring, which has uncovered a link between characteristics of surplus manure nutrient application and environmental pollution.

My project will investigate this further through simulating within GIS the volume of nitrogen (N) and phosphorus (P) that is applied to farmland via slurry collection and spreading. I will then evaluate this input in reference to thresholds of surplus N and P production, using application limits and plant requirement estimates set forward in the Nutrient Action Programme (2019-22). A mapping framework will be created to identify townlands that exhibit characteristics of surplus manure production and to flag these areas as sites of higher environmental risk and therefore in need of a change in the manure management practices.

Mapping the location of excess organic material production will be used also to inform the AD industry on the location and volume of potential new feedstocks, as well as supporting the development of new infrastructure in relation to manure/digestate nutrient redistribution. When excess organic material is rerouted to AD, this not only increases the production of renewable energy but also offers increased control over nutrient management through the opportunity of additional processing steps for nutrient recovery. Both agendas support increased sustainability within agriculture, as manure biomass offers a renewable source of energy to decarbonise the industry, and a decrease in the nutrient surplus will reduce the risk of pollution and work to protect the NI environment.

This research and the map outputs will be key in connecting the changing energy sector, the AD industry and agriculture in a way which will produce renewable energy and lower the manure nutrient surplus, creating a greener, more sustainable future for NI.

Expertise related to UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):

  • SDG 7 - Affordable and Clean Energy
  • SDG 11 - Sustainable Cities and Communities
  • SDG 12 - Responsible Consumption and Production
  • SDG 15 - Life on Land


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