... it's incredibly potent as CH4... and then it "breaks down" into CO2 and H2O. I think enkid's point is agreeing with you: might as well burn that sewage CH4

... it's incredibly potent as CH4... and then it "breaks down" into CO2 and H2O. I think enkid's point is agreeing with you: might as well burn that sewage CH4 for energy-- you end up with the same CO2 in the end and less CH4 in the atmosphere in the short term.