Circular solutions for nutrients in biowaste Oscar Schoumans, Inge Regelink, Wageningen Environmental Research Arjan Prinsen, Groot Zevert Vergisting Kees Kroes, LTO -Noord Projectbureau Introduction The Dutch intensive agriculture highly depend on the import of nutrients as feed and fertiliser. Consequently, large amounts of organic waste streams (‘biowaste ’) are produced mainly as manure but also as sewage sludge and food waste. In order to prevent nutrient losses to the environment limited amounts of manure, other waste streams and mineral fertilisers can be applied on agricultural land. Valuable components of organic waste like nitrogen (N), phosphorus (P) and potassium (K) and organic matter are exported over large distances (manure and compost of food waste or sewage sludge) or incinerated (mainly poultry manure and sewage sludge).
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