Admission of struvite as category in the Fertilizer Act

Phosphate recovery from manure can be regarded as an important contribution to the control of decreasing global phosphate resources. This research project examines whether struvite can be approved as fertilizer in the Fertilizer Act.


Struvite is a collective name for a group of phosphate compounds. Struvite is released as phosphate residual during the process of liquid municipal, industrial and agricultural waste disposal. Next to struvite, the released phosphate residual, may also contain contaminants and harmful micro-organisms. Because of its durable effectiveness it may however prove to be an attractive fertilizer. At present, struvite is defined as waste product and therefore application can only be approved after admission into the Fertilizer Act.