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__NOTOC__
[[Image:Struvite.jpg|thumb|right|150px|A jar of Struvite]][[Image:urine collection.jpg|thumb|right|150px|Man collecting urine in jerrycans on his bicycle]]
Urine is often used as a low cost liquid fertilizer in rural areas due to its highly concentrated nutrient content. It contains 80% of the nitrogen and 50% of the phosphorus which humans excrete. Further it is very sustainable, since through urine separation, approximately 350L of urine can be collected annually for any adult. However application of urine is often unwanted since it is required in large volumes, is inconvenient to transport and has a bad odour.
====Operation====
[[Image:Struvite production.jpg|thumb|right|150px|Man operating struvite reactor]]
For the production of struvite, firstly urine is needed. This can be collected from markets, urinals, public buildings. It must be separated from other sanitation products using [[urine diverting toilets]] or other EcoSan technologies. Then magnesium must be obtained. This can come from bittern from salt production, which contains 3-10% magnesium, or magnesium sulphate from fertilizer powder, containing 5-10% magnesium.
====Manufacturing====
[[Image:Struvite reactor.jpg|thumb|right|150px|Diagram of a struvite reactor]]
For the production of struvite it is necessary to manufacture a struvite harvesting reactor. This can be of different sizes depending on the scale of struvite production. The reactor and materials used can be adapted depending on the funds and materials available.