How much energy can be produced by burning sewage gas?

I am an eighth grader. I need to make a science project on the production of electricity from sewage. I know that almost sixty percent of sewage gas is Methane and most of the other constituents are combustible. I wanted to know how much energy can be produced by combustion of sewage gas and what amount of it can be converted to mechanical and thermal energy and how much of it is lost.


I was thinking of burning the gas to heat water to steam which in turn would turn the blades of a turbine, which would generate the electricity. I don't know exactly how that would work and how efficient that would be, but I am working on it.


