Usually, surface disinfection is realized through various methods, for example:
Their duration of action and effectiveness of disinfection is not constant in time, and after a period which lasts between a few minutes to some hours or months (like it is the case for classical antimicrobial surfaces), the effect disappears completely, and the process needs to be repeated from the beginning by removing the old layer and applying a new layer of protection. Furthermore, these methods are very exhausting and need a long time action until they reach the desired effects again.
The ideal disinfection method is one based on the treatment of surfaces with an antibacterial substance which is constantly active at light from the visible spectrum, irrespective whether natural or artificial!
For this reason, we have created:
PHOTOCATALYTIC ANTIBACTERIAL COATING ALINNA®
Thermic disinfection is realised by exposing the surface to a high temperature source for a certain period, in order to destroy or deactivate pathogen agents, through action on the compounding proteins. Steam cleaning is an example for this kind of treatment (120-150 °C).
Currently, most disinfectants use solutions based on alcohol, chlorine, formaldehyde, glutaraldehyde, peracetic acid, hydrogen peroxide, phenols, quaternal amonium compounds, etc., in order to degenerate the proteins or NRA, DNA of pathogen agents.
Sunlight has a disinfecting effect, the ultraviolet (UV) portion of its spectrum being incredibly efficient in neutralizing pathogen agents which are in the air. The complete spectrum of UV radiation can be split in UV-A, UV-B and UV-C radiations. UV-C radiation is damaging but is completely absorbed by the Earth atmosphere. Both UV-A and UV-B radiations are damaging, while long term exposure to UV-B can lead to DNA and cellular lesions in life organisms. Currently, surface disinfection can be done also with the help of UV-C lamps (which generate light waves between 280-100 nm), but by carefully respecting security instructions.
Here we can list disinfection methods which use ion release mechanisms (oligodynamic effect) of metals like nickel, copper sulfate, zinc oxide, silver nitrate, alumina acetate etc., which are incorporated in surfaces with antibacterial characteristics.