Nearly 15,000 liters of urine were collected during this year's Walpurgis Night celebrations in Uppsala. This is more than last year's 11,000 liters, but not quite 20,000 as the researchers from SLU had hoped.
The urine collected in specially designed urinals will be used as an alternative to artificial fertilizers.
We get a cake with salts that remain, which we can then grind and granulate so that it becomes fertilizer pellets that can be used in ordinary conventional machines that farmers have, says Björn Vinneås, professor of circular technology at SLU, to P4 Uppland.
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