Phosphorus is essential for life on earth due to its various functions in the growth and energy mechanisms of fauna and flora, but its natural reserves are diminishing in quality and quantity. To ensure future food security, phosphorus needs to be recovered. In the Netherlands, 71 million kg of phosphorus are produced as manure annually. This limits the agricultural applicability of animal manure. Therefore, it is incinerated or transported to other countries. This project aims to design a sustainable biotechnological process that enables the recovery of phosphorus as concentrated calcium phosphate from animal manure during anaerobic digestion to stimulate circular agriculture.