1. Car Pollution – Buying a new car
with a »tree included« ?
URBAN FILA
MELANIJA VARGA
Gimnazija Moste, 2014
Mentor: Mojca Orel
Comenius
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5. INTRODUCTION
• At first glance, buying a car has no direct relation to trees, but
the connection is very much evident.
• In addition, photosynthesis and properties of CO₂ we know
the consequences of excessive pollution by greenhouse gases.
• In the second part of this presentation we are going to learn
the basic calculation of CO₂, with a known fuel consumption
of a car at 100 km and vice versa.
6. PHOTOSYNTHESIS
• Photosynthesis is the process by which green plants use
energy from the sun to convert water, carbon dioxide and
minerals into oxygen and organic compounds.
• Photosynthesis happens when the water is absorbed through
the roots of green plants, enters the leaves, where the
process is carried out in the presence of oxygen and carbon
dioxide.
7. PHOTOSYNTHESIS
• Photosynthesis provides us with most of the
oxygen we need to breathe.
• People with breathing exhale CO₂ that is
needed by plants in the process of
photosynthesis.
• Plants are essential for life.
8. CARBON DIOXIDE
• Carbon dioxide is a gas with the chemical formula
CO₂. In a small quantity (0.03 %) is present in the
Earth's atmosphere where it acts as a greenhouse
gas.
• Carbon dioxide is a colorless gas which, when
inhaled in high concentrations (which is related to
the risk of suffocation) causes a sour taste in the
mouth, nose and throat.
• Since it is completely oxidized, carbon dioxide is a
very reactive and is not flammable.
9. CARBON DIOXIDE
• Carbon dioxide is highly soluble in water.
• Approximately 1 % of the dissolved carbon
dioxide is converted into carbon dioxide.
• Carbon dioxide is particularly useful in welding
as a protective gas.
10. THE IMPORTANCE OF CARBON
DIOXIDE IN THE AIR
• The average temperature of the Earth near the ground would be 18 °C
when water vapor, carbon dioxide, methane, ozone and several other
gases do not create a natural greenhouse effect.
• More than 100 years ago, the Swedish physicist and chemist Svante
Arrhenius found that a doubling of carbon dioxide concentrations
increases the temperature near the ground for 4 to 6 °C.
• Layer of CO₂ retains infrared radiation in the atmosphere and the climate
is getting warmer. The effect is similar to the greenhouse for raising plants.
11. THE IMPORTANCE OF CARBON
DIOXIDE IN THE AIR
• If we consider the consumption of fossil fuels and
simultaneous deforestation, it is likely that the amount of CO₂
will be doubled to 2040.
• With the use of petroleum products (petrol, diesel) we
directly burden the environment, mostly with carbon dioxide
(CO₂).
12. USE OF CARBON DIOXIDE IN TRAFFIC
• Data on the benchmark fuel consumption of individual car
manufacturers gets by measuring the car emissions of CO₂ in
the laboratory and on graduated cylinders.
• The measurements are also allowed on the road (without
wind).
• Thus obtained values are recorded in a separate table, which
allows us to adjust settings and measuring cylinders on each
model and version of the car.
13. USE OF CARBON DIOXIDE IN TRAFFIC
• Benchmark measurement cycle fuel consumption according
to EU Directive 80/1268/EEC takes 1180 seconds.
• Two-thirds of simulated driving cycle consists of four sections
of city driving, remained third by driving on the open road
outside of town.
• The driver, who sits in the car, follows the instructions on the
computer screen.
14. TREES AND CARBON DIOXIDE
• The answer to the question how much CO₂ can be consumpted by a
tree varies and depends on the type, age and size of trees as well as
the quantity of leaves by the tree and the environment in which
they grow, which means different temperature, humidity, rainfall
and soil quality.
• For example of calculating how much CO₂ can be used or
consumpted by a tree we chose beech.
• Beech tree is almost 20 meters high and with a diameter of 12
meters crown.
• This tree has 600 thousand sheets with an area of 1,200 square
meters and covers 120 square meters of floor area.
• At 0.3 percent concentration of CO₂ in the air goes through the
nearly 36 thousand cubic meters of air.
• Leaves filter airborne particles from the air, such as bacteria, fungal
spores, dust and other harmful substances.
15. TREES AND CARBON DIOXIDE
• From the tree 400 gallons of water evaporate per day and
moisturizing atmosphere.
• The photosynthesis produces 13 kilograms of oxygen which
caters the daily need often people.
• If a tree is cut down due to the construction of new roads,
buildings or a complaint because someone gives too much
shade, we have to plant 2,000 new trees with a volume of one
cubic meter of canopy.
• It would cost us about 600 thousand.
16. CONCLUSION
• Environmental pollution caused by automobile
exhaust gases, which include CO₂, is becoming an
increasing environmental problem.
• The car manufacturers take into account the
problem, although they primarily follow profit. Their
marketing campaignes try to neutralize the harmful
effects of their products.
