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A comment on Gates Foundation spent $200M funding toilet research. Parent comment

Re:Gates Foundation spent $200M funding toilet research by MrFantastic on Wednesday November 07, 2018 @11:26AM (#18400161)
That makes no sense. What happens to the solid material?
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Re:Gates Foundation spent $200M funding toilet research by driverdan on Wednesday November 07, 2018 @01:31PM (#18401086)
What solid material? Fecal matter, toilet paper, small food particles, etc break down in a septic tank.

I suppose there will be very small amounts of minerals that don't break down but they are insignificant.

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