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Biochar From Human Waste Could Solve Global Fertilizer Shortages, Study Finds
lundi 11 août 2025, 22:10 , par Slashdot
Biochar produced from solid human excrement could supply up to 7% of global phosphorus fertilizer needs annually, according to a Cornell University study published in PNAS. When combined with nutrients extracted from urine, the process could provide 15% of phosphorus, 17% of nitrogen, and 25% of potassium used in agriculture worldwide.
The biochar production process reduces solid waste volume and weight by up to 90%, while allowing nutrient proportions to be adjusted for specific crop requirements. Read more of this story at Slashdot.
https://news.slashdot.org/story/25/08/11/1939238/biochar-from-human-waste-could-solve-global-fertili...
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