New project to test recovered phosphorus as feed phosphate
EasyMining, the Swedish University of Agricultural Sciences (SLU) and Lantmännen have started an innovative project testing the precipitated calcium phosphate (PCP) recovered in the Ash2Phos-project as feed phosphate to poultry and pigs. The hypothesis is that recovered calcium phosphate from sludge ash has the same level of phosphorus digestibility as conventional MCP in pigs and poultry.
– We see a great potential for our recovered phosphorus to be used as a feed phosphate and thereby contribute to the transition to a circular economy, says Sara Stiernström, Product Manager at EasyMining.
The PCP from the Ash2Phos-technology has attractive properties as a raw material for fertilisers and as feed phosphate with a high phosphorus content, low fluorine content and high solubility in citric acid. The solubility is over 90 percent, same level as monocalcium phosphate (MCP) which is used as feed phosphate today. The PCP also has a lower CO2-emissions and is more environmental friendly than virgin phosphorus.
– Using the PCP as feed phosphate will contribute to substituting virgin materials, prolonging the life time of mines, lowering contaminates like Cadmium and saving significant amounts of CO2 emissions, says Sara Stiernström.