Rodleroc

Hi everyone, I'm a graphic design student currently in the final year of my degree and I'm doing some research into the problem of public urination. One of my initial ideas was to use collected urine for perhaps fertiliser, but I was wondering if anybody could help me come up with any ideas. Any help would be most welcome... as you might have guessed I'm a layman, I don't even know if 'Organic Chemistry' is the right category for this... Hoping you can help, Rob.