Using synthetic nitrogen fertilizer for agricultural production has been the lay of the land in France. However, synthetic nitrogen fertilizer can become a pollutant when used in excess. When fertilizer is released into rivers, it is one of the significant causes of pollution.
Additionally, the price of fertilizer has increased substantially because the price of natural gas, an ingredient of nitrogen-based fertilizers, has increased. Natural gas prices have jacked up due to increased demand after the pandemic and lower supply than usual from Russia.
These price changes left French citizens wondering if there could be a better alternative to synthetic nitrogen fertilizer. As it turns out, researchers in France believe they might have found the unlikeliest of candidates to fill the shoes of traditional fertilizer: human urine.
Plants need nutrients, nitrogen, phosphorus, and potassium to grow; it just so happens that human urine contains all four.
The idea of using urine as an alternative to chemical fertilizer did exist before the price increases. Michaël Roes and Dr. Pierre Huguier co-founded TOOPI Organics in 2019, a French biotech company that collects human urine and converts it into fertilizer.
TOOPI Organics now has a factory outside of Bordeaux capable of producing 2,500 liters of organic fertilizer daily.
Michaël Roes told EU-Startups “Our first objective is to preserve the water resource by collecting 1% – 5% of the volumes of urine produced. Our second objective is to free farmers from dependence on mineral fertilizers by offering them a real ecological alternative, with natural inputs that are more effective and cheaper than chemical fertilizers.”
TOOPI Organics' solution for collecting urine is waterless urinals with recovery tanks for both male and female restrooms. In addition to collecting urine, these unique urinals would also help save water. With regular toilets and urinals, six liters of drinkable water is contaminated every time you flush.
Urine-based fertilizer has been trialed in China, France, Uganda, Portugal and Jordan. The attitudes toward fertilizer made from urine were positive in China, France, and Uganda. However, the acceptance rates were much lower in Portugal and Jordan. Despite the benefits, it seems not everyone is ready to eat food that has been fertilized with transformed urine.
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