Cu2+ was adsorbed from an aqueous solution using like a biosorbent a cryogenic compound synthesized from chitosan and cellulose.

The cryogel Q – C was characterized before and after of the Cu2+adsorption, using SEM – EDX Analysis, FTIR – ATR and XPS techniques. The results showed that the cryogel Q - C is a macroporous material and due also to the fact of functional groups: -OH and NH2- in its structure, the cryogel can have environmental applications.

The improvement of the environment is one of the contributions of this research. In addition it is possible to take care of the human health through the reduction of dissolved heavy metals in water.

The model of Sips showed the best performance of the equilibrium data. This information suggests that the elimination of the Cu2+ is carried out through a chemical reaction on a heterogenous surface.

The maximum capacity of adsorption of Cu2+ was: 185, 186 and 192 mg/g at 30, 40 and 50 ° C respectively.