If it says briefly, it is rain which
included nitrogen oxide(NOx) and sulfur oxide(SOx).
Today,It haven't problem in Japan.But it serious problem
Europe and North America.Acid rain famous for serious cause of
environmental problem examole destroyed forests and polluted
lake.
By sea and lake evaporated vapor is neuter.It is not acidity
and alkalinity.But,it become weak acidity because it include
carbon dioxide in atmosphere.So now natural rain is acidity.
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The NOx and SOx in the exhaust gas discharged from the
smoke and the car from a factory are the thing of the rain which
caused the photochemical reaction by solar light in the
atmosphere, and changed to strong acid, such as sulfuric acid and
nitric acid.
If chemistry fuel is burned, chemistry substances contained in
fuel with energy, such as sulfur and nitrogen, will be emitted.
Sulfur and nitrogen are typical elements contained in acid rain.
It was thought that these two spread in air once and they became
harmless. But it was thought that these elements served as SOx
and NOx, melted into rain, and scientist Auden of 1967 Sweden
caused acid rain.
The SOx currently emitted into the atmosphere is such much
quantity that it is surprised. This most can begin to come from a
factory or a thermal power plant.
Although there is little quantity of NOx compared with SOx, it
is most quantity.NOx is mainly discharged from an automobile
engine. Since the traffic of Europe is increasing at a 20% rate
per year, if it goes as it is, the air pollution and the acid
rain from which NOx becomes a cause will pose a serious problem.
Some acid substances which pollute the atmosphere fall to the
ground, without melting into steam. And it piles up on trees, a
building, etc. These are called "dry descent thing",
are soon mixed with rain water and oxidize.
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The cause of acidification natural environment is not only
air pollution. A plant absorbs and uses the nourishment in the
ground, when growing up. This raises the acidity of soil. But
when a plant withers and it returns to the ground, the
nourishment is returned to the ground and the acidity of the
ground is lowered. Nature can keep stable pH level such.But,
agriculture and forestry return neither the crops which gathered
a harvest, not the cut down tree to the ground.So nourishment
does not return to the ground but the acidity of the ground just
increases. But the compound fertilizer of the potassium nitrate
system used as manure raises the acidity of the ground further.
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Reducing the abandonment gas of a factory or reducing the
abandonment gas of a car etc. is reducing the amount of discharge
of NOx or SOx.
But, because of development-izing of industry, from the time
to which a convenient thing is indispensable, the present age
cannot stop the abandonment gas of a factory, or cannot stop
riding in a car.But generating of NOx or SOx can be prevented.
Let's think by the car of energy saving seen also by CM. After
being able to run in large numbers in the quantity of the same
gasoline, the amounts of discharge, such as carbon dioxide and
NOx, can be reduced. How is a solar car? After being able to run
only with solar energy, NOx etc. is the car very good for
environment which is not discharged. But,I'm afraid a solar car
don't spread much and.
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The easiest thing is walking or going using a bicycle when
you go to near. If you do that, your body can be moved, and good
at environment.It is killing two birds with one stone! You may
find nature. Please try that!
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