Does anyone here know anything about generating phosphorus from urine?

No.12849227 ViewReplyOriginalReport
a la the method described here https://sciencing.com/make-phosphorus-4524329.html

Does anyone know the actual chemical reaction occuring here? I would imagine it is something like the carbon acts as a catalyst to reduce the phosphorus and oxidise one of the organic components in cinnamon, but does anyone know specifically what is going on?