Carbon materials based on lignin and their environmentally friendly applications

The green revolution concept has accelerated the pace of innovation to avoid the use of materials that can harm the environment. In this work, the valorization of lignin and olive wastes was studied. Olive stone used to prepare activated carbons which are modified by lignin. The carbons were characterized by TGA-DTA, FTIR spectroscopy, adsorption-desorption of N ₂ at 77K, Boehm titration and the measure of pH _PZC . FTIR results show the presence of some groups that confirm that carbons based lignin can be used as fertilizers. BET results show micro- mesoporous structure of carbons materials, they might be used as electrodes. Boehm titration shows the increase of phenolic groups in modified carbon, which confirms that lignin can be used as bio-composites. The thermal analyses show the high stability after lignin coating so the carbon based on lignin can be used as a green biofuel.