The use of BBF can reduce resource mining, pollution and greenhouse gas emission when they replace mineral fertilisers. Moreover, they can be produced from the recovery of nutrients from fish processing and aquaculture by-products. Based on the circular economy model, the EU-funded SEA2LAND project will promote the production of large-scale fertilisers in the EU from own raw materials. This solution is expected to reduce the soil nutrient imbalance in Europe. To test the solution, the project will produce several BBFs for local crops and conditions as well as others for exporting (with high value and effectiveness to ensure a low environmental impact). Eventually, the BBFs will partially replace imported nutrients for agriculture in Europe.