Hi there, I have a home biogas toilet and in theory yes, you could. The other reply you have did bring up a good point about volume of water used. The standard system uses no more than about 2L of water per
Flush , also I’m not sure how the bacteria in the digester will manage paper which is not allowed in the standard one (could be because of the toilet, not the digester)
There are also distance limitations.
The toilet cannot be any more than 10 m from the digester and must be higher (in order to gravity feed) and the gas pipe supplied for the stove is only 7m. With ups & downs, it doesn’t give you much scope for placement. Hope that helps!