Humanure (the urine and feces of human beings) is a rich source of nutrients that has sustained agricultural systems around the world and throughout the ages. Yet despite humanure’s great potential value, and despite countless examples of its successful reuse set by 100 generations of Asian farmers, most technologically developed nations have come to treat humanure as a waste, fit only for disposal.

Typically, it is mixed with pure drinking water and flushed into sewers where it mingles with all  manner of industrial toxins.

It is in this context that I present the following experiment, the goal of which was to develop a toilet system that could compost humanure at temperatures exceeding 55°C, guaranteeing the destruction of all human pathogens. Such a system would create a product that the user could freely, safely, and legally apply to all food crops, thereby closing the nutrient cycle and obviating the need for external fertilizer inputs.

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Senior Project