For gas samples, is it necessary to manually sort all materials before incineration?
No. Sorted or not, the materials will still have the same renewable content. One of the advantages of using the ASTM D6866 result is that you do not need to know the tonnage factor (i.e. the weighing and sorting of all the material). Whether you burn 1 ton or 20 tons of sample, the ASTM D6866 result would still be the same. If you know the tonnage CO2 produced and the biomass content from the ASTM D6866 result, you can calculate exactly how much “renewable” carbon contributed to the energy production. This is necessary in certain initiatives like the UK Renewable Obligation Program.
