Used throughout history, and still used today in many parts of the world, human waste has a bad reputation as a fertilizer. Why? The chance that pathogens can be carried and inadvertently passed on through the food products grown with “night soil”. Not to mention the unpleasant, distinctive odor that the garden/crop lands take on with this practice.
Thanks to Pyrolysis, and with the ingenuity of its Swiss developers, human saste is being collected in mobile ‘dry’ toilets, then taken and processed by pyrolysis to become terra preta, a very fertile substance for growing plants of all kinds.
Source: The Straits Times
Martin Sturzenegger, Tages-Anzeiger
SWITZERLAND • If the banana trees at Zoo Zurich are particularly lush, it is thanks to a fertiliser with an unusual ingredient: human waste. During spring last year, zoo employees cleared a bamboo grove in Zurich’s Masoala Rainforest to plant the trees.
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