Abstract
In recent years the nano cellulose has become an important topic for several research fields due to its renew ability, availability, biocompatibility and different awesome properties. As occurs with first and second generation bioethanol, the investigation on nano cellulose is gradually going towards the indirect use of lignocellulosic biomass, i.e. the exploitation of different cellulosic residues and wastes produced from agricultural and industrial activities because of the wide availability and renewable character of these feedstocks. In the present review, an exhaustive bibliographic study was performed to prove the increasing interest on these new cellulose sources. Furthermore, and according to existing literature about nano cellulose obtaining, the new properties and possibilities that this new feedstock offers were discussed, and the advantages due to the use of this kind of raw materials were presented. Finally, overlooking the valorization of existing agricultural activities and industrial processes, a scheme of the proper use of these agricultural and industrial wastes as a future nano cellulose supply chain was proposed.