In the last 5 years, many changes were instituted in the residue
collection process in the sugar-cane/alcohol industry, resulting in
residues with a lower humidity content and a higher volume of
water re-used by the process. TGA data show (Teixeira et al.,
2007) that the dried SCBFA in natura had only 20% organic material
and 77% residual mass (ash). Today with the use of filter and belt
presses, the charcoal concentration is in the order of 34% and
62% residual mass (ash) as is shown in Fig. 3.