From the results obtained, some additional calculations were made to better interpret the reuse effect.
The organic matter in the tanning float was calculated using formula (1):
Organic matter% ¼ Total Solids% Ashes%
Where: Total solids: Porcentaje del baño curtiente que queda enforma sólida después de calentarlo a 103 C and Ashes: Parte del
baño curtiente que queda en forma sólida después de calentar los
Total solids a 600 C.