The potential bio-gas yield from any feedstock (e.g. human faeces) can be estimated by mathematical modelling. However, data on the fuel properties such as elemental (CHNS), proximate and calorific analysis is required as input values.
The modelling processes can be done using either mathematical models such as stoichiometric equilibrium models, ANN or software such as PRO II or ASPEN depending on the expertise of the user. Hope this helps with your research.