tio2 used in paper factory
Introduction
In addition to its biocompatibility, titanium dioxide also possesses excellent photocatalytic properties. When exposed to ultraviolet light, it can generate reactive oxygen species, which have potent antibacterial effects. This property makes titanium dioxide a promising candidate for developing anti-infective medical products. For example, titanium dioxide-coated medical devices could reduce the risk of bacterial infection by killing bacteria on their surface.
The reaction liquid is filtered through plate and frame pressure to obtain lithopone in the form of a filter cake with a moisture content of no more than 45%. It is then roasted in a drying furnace to change the crystal form of lithopone, and is then pickled with sulfuric acid at a temperature of 80°C. Finally, it is washed with water, reinforced with colorants, filtered, dried and ground into powder.
As a food additive, titanium dioxide and its nanoparticles in particular have been associated with DNA damage and cell mutations, which in turn, have potential to cause cancer. When used as a food coloring, it is known as E171.
