Another National Geographic article
"A new type of public toilet is helping people in Haiti make fertilizer from human waste, a project that may someday revive the country's degraded farmland, curb disease, and create jobs...
But these aren't just any toilets: Kramer and her colleagues constructed urine-diverting toilets, a type of ecological sanitation in which urine and feces are separated. The waste is then covered with a dry material to aid decomposition and is regularly collected...
The waste is then taken to a composting site outside the city, where workers mix the material with sugarcane bagas—a byproduct of making rum—to speed up the composting cycle."
Full article
here.