the machine takes off the peel/pulp, leaving just the white bean
The leftover pulp (peel)
This leftover pulp is a huge waste issue. It is very acidic, and can easily pollute the water, yet there is no good method for disposing of it, people just dump it wherever they can. And can you imagine the quantity leftover, since everyone is depulping large quantities of coffee for three months. We are hoping to work with the biodigestor latrine to use it to dispose of the pulp and use its gases to cook with.
I don´t know if I´ve talked about this latrine, it´s a project we´re starting next month, which uses the methane gases from human waste to cook with on a gas stove. So it´s avoiding deforestation, since no wood is needed to cook, and it´s a latrine.