Recycled phosphorus as feed phosphate
A collaborative project to test the usage of recycled phosphorus produced by EasyMining’s Ash2Phos process has successfully shown that the phosphorus recovered from incinerated sewage sludge works as a feed phosphate for livestock.
The results show that the trials worked, and for the first time it’s now possible for the market to have a recycled and sustainable feed phosphate with low climate impact.
In both studies, growth for all animals was as expected and showed no noticeable difference on any of the diets. For the pigs, the estimated total tract apparent digestibility (TTAD) of phosphorus in the PCP was 60.4% and 83.8% of the phosphorus in MCP. For the chickens, the estimated ileal digestibility of phosphorus in the PCP was 58.4% and 75.1% of phosphorus in the MCP.
The testing also shows that the PCP has a digestibility that is slightly lower than MCP, but says it’s in the same range as other feed phosphates and that there are also additional parameters considered for feed phosphates, such as price, total environmental impact, CO2 emissions and use of the manure.
A full breakdown of the project and its findings was presented during the Improving Sustainability of Livestock Production webinar.
The webinar also discuss the key issue of regulatory hindrances for recovered nutrients.
More efficient use of resources will be key in the EUs Circular Economy Action Plan. Animal feed and feed additive have an important role to play and have great potential in being part of the transition to a circular economy. With the problem of mineable phosphate rock being non-renewable, and the vital importance of phosphorus in our society, recycling of phosphorus will be an inevitable part of our future society.
The project is a collaboration between EasyMining, Swedish University of Agricultural Sciences (SLU) and Lantmännen, founded by Lantmännen Research Foundation and Ragn-Sells.
The project started in the beginning of 2021 and is planned to run for almost 2 years.
Contact person: Sara Stiernström, Product Manager EasyMining: sara.stiernström@easymining.se