But is it SAFE?

No one in our world wide network has ever reported any life threatening accidents with home scale biogas.  The tanks we work with can't explode if that is what you are thinking, because they are filled with water. Water and dung. They store very little gas, and it isn't under any particular pressure.

Solar CITIES demonstrated the safety of INDOOR biogas in an unventilated room at Mercy College for over a year.

Demonstrating Biogas  at Mercy College

 

See https://www.youtube.com/watch?v=-k1FCVwjylI

 

flame test of lab based biogas at mercy

See https://www.youtube.com/watch?v=oDbXsYVL5NA

We actually started with a small biogas system in my upstairs bathroom in Germany, using my babies  diaper waste as starter material (solved that problem! "Who wants to change the baby's diaper?"
"I do, I do"!).

The feedstock then became the uneaten baby food.

Diaper and babyfood based biogas system

See https://www.youtube.com/watch?v=cVFHtLAv30g

Home scale biogas: first flame from diaper wastes

 

See https://www.youtube.com/watch?v=kFOapalN5uA for the first flame test inside in 2010

Our three IBC system that we developed at the SEKEM farm in Egypt in 2010 was implemented indoors in a favela of Sao Paulo, Brazil, by Paulo Mellett in 2014.

Jardim Angela Biogas in Brazil Sao Paulo Favela

See https://www.youtube.com/watch?v=1W6V3QGs9fA

Question: 

I mean REALLY safe?

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