Casus Monuments Vlissingen
In this casus, various monuments were coated; a part of a city wall, several grave monuments, and a part of a bunker.
The grave monuments were processed in various ways, namely: one monument was completely cleaned before coating, one monument was half cleaned and one monument was not cleaned.
This was done to demonstrate what photocatalysis processes and also prevents!
Before
One week after
Second week after; the deposit fades more and more
Week 3
End week 3
Beginning of the fourth week after, most of the dead organisms have disappeared from the surface.
Total surface before coating
Total surface beginning fourth week after coating
Before
One week after
Second week after; the deposit fades more and more
Week 3
End week 3
Beginning of the fourth week after, most of the dead organisms have disappeared from the surface.
Total surface before coating
Total surface beginning fourth week after coating
What a confirmation of the completely natural and ultra powerful process of photocatalysis!
The coating will partly fall off with the contamination.
In practice, the surface will in many cases be cleaned first before applying the coating.
Monumental gravestone from the nineteenth century
In a shadier environment the process is slower because there is less direct sunlight.
This is also why it is literally ‘naturally’ good to clean the surface before treatment in order to guarantee an optimal yield for the long term!
In the greenhouse horticulture, the coating was applied in the test phase over a period of more than a year in a very wet greenhouse at high-tech tropical pot plant grower Ammerlaan T.G.I. in Pijnacker.
The coating was applied directly over extremely heavy contamination, consisting of thick layers of dark green algae on a ten-metre high white tarpaulin, attached along the walls of the high greenhouse.
In the course of the weeks after treatment the contamination faded and disappeared until a residual yellow cast was visible in only a few places.
It had literally been converted into dry powder! Of course, the surfaces were also cleaned here first before coating the entire greenhouse.