Sanergy employees empty the toilets each day, taking an air-tight container of waste to a Sanergy processing facility where it is converted to biogas and fertilizer that Sanergy plans to sell to commercial and small farmers.

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They fill the container with pure air made by evaporating liquid nitrogen and liquid oxygen, and add water vapour and some trace gases.

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" When you release it, the launch pushes air through a barrel-like container which creates a "toroidal effect.

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Pouring from one container to the next can cause air to mix into the milk.

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