Lemna: Duckweed technology for improving nutrient management and resource efficiency in pig production systems
LIFE LEMNA aims to construct the first full scale nutrient removal system in EU based on the production of duckweed which will be applied to uptake N, P and other nutrients from the swine manure after an anaerobic digestion. The resulting duckweed biomass will be a source of high value protein source for feed (bio-based products) and biofertilizers. Duckweed is a small floating macrophyte that has a high capacity for removing dissolved nutrients from water, especially nitrogen and phosphorous compounds, as well as for reducing organic matter and suspended solids (Mohedano et al. 2012). However, the great advantage of this plant group over other macrophytes used in effluent treatment is the production of a biomass with high nutritional value.