Division of Environment and Natural Resources
Producing advanced bio-based fertilizers from fisheries wastes - SEA2LAND
End: dec 2024
Start: jan 2021
The aim of SEA2LAND is to valorize waste/residues from fishereis and aquaculture as fertilisers and soil improvers.
This is a European project with partners from Malta and other Meditranean countries in the south to Norway in the north as well as in Chile in South America. A large number of products will be developed and tested across Europe. The goal is to develop products ready for market.
In Norway we focus on fish sludge from aquaculture.
More informationSEA2LAND project website Workshop fish sludge
Project participantsMette Thomsen Maria Dietrich
|Start - end date||01.01.2021 - 31.12.2024|
|Project manager at Nibio||Bente Føreid|
|Division||Division of Environment and Natural Resources|
|Department||Urban Greening and Vegetation Ecology|
Fertiliser products will be developed from residues and tested for fertiiser value and safety.
Both small scale laboratory tests (incubations, pot trials) and larger scale field trias will be carried out, as well as simulation modelling.
NIBIO leads the work package on "Evaluation of agronomic and environmental performance". In November 2021 this work package had a kick off meeting in Bilbao. As covid-19 was still an issue, it was a hybrid meeting where some participated online. For those physically present there was also an excursion, and a workshop to learn to use the DNDC simulation model was arranged in connection with the meeting.
We tried to use bokashi fermentation to reduce pH and nitrogen loss during subsequent drying of fish sludge. However, bokashi fermentation did not reduce pH more than storing without bokashi. But we did find that pH drops during storage anyway, so storing the sludge for some weeks between de-watering and drying would be a good idea.
Dried fish sludge and compound product containing fish sludge and other residues to get a balanced fertiliser product have been produced. They will be analysed and tested in pot trials together with other products produced by other European partners.
We will organise a workshop to inform about our and other results on fish sludge.