The fact that liquid manure is used as fertiliser is due to its high phosphorus content. Since this can be used even more effectively in its pure form, the Fraunhofer IGB is developing technologies for recovering phosphorus from liquid manure.
In addition to phosphorus, nitrogen is also a valuable component of liquid manure, which is used as a fertilizer, but also plays an important role in organic chemistry for industry, for example.
Stabilization through drying, torrefaction or carbonization
In the production, preparation and processing of solids, drying is usually an essential process step. Drying processes are used, for example, to stabilize the shape of granulates, pellets or powders.
Torrefaction aims to increase the mass-related energy density and thus the calorific value of the raw material. It also increases the transport and storage capability of the raw material.