A hydraulic test was also implemented in the same objective. Fines were plunged in a full water tray. Separation
between light element (wood and polystyrene) and heavy one was instantaneity. Each of these products of hydraulic
separation represents 50% of the humid volume and light components embody nearly 25% of the humid mass.
However, in spite of letting best results in term of separation, liquid sorting process is not the way the SME partner of
GISEMENT, will choose at first. Indeed this kind of process is expensive since it implies water and energy consumption,
and it needs to implement drying unit and water treatment plant. Because of environmental and economic costs the SME
decided that this method i s a second option. Therefore, aeraulic process was chosen to extract organic fraction of
fines. This part will be destined to complete SRF product at the end of the sorting chain. Analyses are led to evaluate the
quantity of problematic substances which are persistent in organic and mineral fractions.