The biogas thorough treatment consisting of a biological desulphurisation with a biotrickling filter
followed by a deep cleaning step based on adsorption is successful for removing sulphur compounds,
siloxanes and hydrocarbons. The influence of the heat-to-power ratio on fuel cell performance is investigated operating the system at O/C ratio of 2, reforming temperature of 550 C, stack temperature
of 800 C and at a constant voltage of 43 V.