Stone Air
Purifier
Netherland is creative country which
is never stopping attempt to discover and unveil the curtain of mystery of science
and technology. Dutch people enjoy innovating and constantly ask themselves and
others questions to come up with new ideas. They accelerated to make better
life especially for their nations and even people in the world. It is seen by their
current discovery to overcome the daily problem especially in the big cities that
is the air pollution from the dangerous gases which emitted from the motor
vehicle.
The idea comes from Götz Hüsken who has been
working as senior researcher in the Eindhoven Engineering College. He started
the research with the stone road, asphalt or beton which can
clean the air. It is sounds impossible, but real. Waste of gas nitrogen oxide
(NOx) which can dangerous the health emitted from motor vehicle fumes,
especially on the road in the big cities could be reduced from the discovery
about the stone. He said
the top layer of stone pavement is made from titanium dioxide (TiO2)
which can use as photo catalyst from the sun to breakdown NOx in
the air. People were very doubtful about their experiment, but finally they can
proof it, the stone can work properly as air purifier. This road covered material
can breakdown the waste of gas NOx not to be dangerous nitrate for more than
the half portion. NOx is the gas which can caused acid rain, fog and respiratory
disease. This experiment was supported by European United which gives the strict
regulation for the institutions or private to overcome the hazard NOx in the
cities. Sunshine breakdown NOx accelerated by titanium dioxide layer of stone
as photo catalyst. The contact is occur naturally when the wind and air
turbulence from the traffic can caused air pollutant, they flow into the stone
and finally can clean the air. According to the Professor Jos Brouwers the
leader asphalt air purifier project, told proudly about the result of air
quality test: “by installing the stone, we had counted the air quality for
three times. The result is gas NOx was reduced 25 to 45%”. Hüsken also explained how the dangerous
compound NOx gone. “NOx had changed into nitrate and it soluble in rain on the
street”. The technology is environmentally friendly, it seen that NOx in the
air is more dangerous than nitrate. Then, the amount of nitrate which produced
from the decomposition is very little. Furthermore, nitrate will be reacted
with rain to the sewer and collected in water cycle to outline the nitrat.
In the summary, it is almost no
negative effect from the research. The stone road is also can muffle the sound
pollutant and slipperiness rate. Titanium dioxide layer is also can use on the concrete
or asphalt. The material is one-half times more expensive than the usual.
However, for the Holland government the fund is not a prime problem provide
that the research is more gives the advantages for the life.
