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Nitrification of urine | by Sustainable sanitation
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Nitrification of urine

Another option to reduce the volume of urine and to keep all the nutrients is currently being researched at Eawag, Switzerland: Before the water is evaporated, urine is partially nitrified to nitrate and the pH decreases to values below 6.5. A white solid remains and an odourless clear liquid (the distillate) with ammonia-N content of only around 100 mg/L. This research is funded by Bill and Melinda Gates Foundation, and a pilot-scale reactor is being implemented soon.

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Taken on January 14, 2011