"Zabaleen" is the Arabic term for those visionary and enterprising people whose culture revolves around recycling. The Zabaleen are experts at "transforming one man's garbage into another man's gold" and aspire toward a net zero-waste economy. Applied and supported this could lead to true energy independence, not only by radically reducing our demand for "raw materials" and hard to extract natural resources but by recycling other less obvious phenomena and materials that are now wasted.
It appears that using magnesium in the urine stream to create a simple struvite precipitate would enable immediate phosphorous recovery (Struvite is a great agricultural fertilizer that you probably know as ordinary urinary tract stones!). From an urban planner's perspective (thinking of our upcoming work in Israel an...d Palestine, based on Dr. Denecke's work in Germany): "Where in the wastewater process train do we want to apply this technique?" I argue that it should be directly at the source, near the toilet or in the basement, producing struvite that can be used for home gardens or for sale to improve home economics.