Question

An ultimate analysis reveals that a refuse sample has an approximate composition of C99H149O59

a) If anaerobic digestion were used, what would be theoretical methane yield (in kg) from one kg of refuse?

b) If the waste were to be composted, nitrogen would need to be added; how much sewage sludge with C/N ratio of 16:1 (wet basis) should be added (kg sludge/kg refuse) to achieve the minimum required C/N of 20:1? The carbon content of the sludge is 15% by mass.

Answer 1