Methods for determining the biomass content of waste

Wolfgang StaberInstitute for Sustainable Waste Management and Technology, University of Leoben, Leoben, Austria,

Sabine FlammeINFA - Institute for Waste, Waste Water and Infrastructure Management, Ahlen, Germany

Johann FellnerInstitute for Water Quality, Resources and Waste Management, Vienna University of Technology, Vienna, Austria

As CO2 emission trading in Europe has been established it is of essential importance to distinguish between biogenic and fossil

emissions. Emissions resulting from bio-fuels and biogenous fractions are categorized as climate-neutral. Determination of

plants using only fossil or bio-fuels is simple but categorization becomes more difficult for plants using a mix of fossil

and biofuel such as solid recovered fuels. In the meantime, different methods for solving this problem have been developed.

Using different approaches and technologies, all of these methods have the same goal: determining the biomass content (biogenic

fraction), for example, in solid recovered fuels or in the off-gas of a mono- or co-incineration plant in order to calculate

the biogenic carbon dioxide emissions. In the following article, the most common methods for determining the biogenic fraction

of fuels, namely the Selective Dissolution Method, the Balance Method and the 14C-Method will be explained in detail.