Abstract:
Lignin derivative (the commercial product - Protobind 1000) offered
by the Granit Recherche Developement S.A. company, Lausanne-Schwitzerland
was synthesized from annual plants. The lignin stands out by a very large range
of applications in extremely various domains: agriculture, the pulp and paper
industry, constructions or metallurgy. The adsorption-desorption capacity, ion
exchange capacity and its catalytic properties are just a few specific
characteristics which are emphasizing the importance of harnessing the lignins.
Using the gravitational sedimentation, it can be determined in a shorter period
of time the particle dimensions comparing with the sieving method, which is a
much more complex one.