Flotation is a physicochemical process in which the
surfaces of the individual components of the fiber suspension
(fiber and printing inks) have a different inclination
to wettability by water. Thus, in the fiber suspension
two types of components are obtained: a hydrophilic (the
fibers) and hydrophobic (ink particles). There are various
degreasing agents. In classical alkaline deinking these
reagents are composed of fatty acids and / or non-ionic
surface active agents (surfactants)