2. Table
of
contents
What is air?
01.
What is air pollution?
02.
Sources and
consequences of air
pollution
03.
How to prevent air
pollution?
04.
Facts about air
pollution!
05.
News regarding air
pollution
06.
4. Air is an important form of
inexhaustible natural resource which is
for our survival. In a world without air,
there would be no plant or animal life,
no fire as burning needs oxygen, no
protection from harmful solar radiation
and great temperature variations. So, air
is a transport protective envelope of
gases that surrounds the earth.
8. Air pollution is the presence of
substances in the atmosphere that are
harmful to the health of humans and
other living beings, or cause damage to
the climate or to materials. There are
many different types of air pollutants,
such as gases, particulates, and
biological molecules. Sources of air
pollution are large and varied.
Air
Pollution
10. Types of Sources
There are four main types of air pollution sources:
● Mobile sources – such as cars, buses, planes,
trucks, and trains
● Stationary sources – such as power plants, oil
refineries, industrial facilities, and factories
● Area sources – such as agricultural areas, cities,
and wood burning fireplaces
● Natural sources – such as wind-blown dust,
wildfires, and volcanoes
Sources
of
air
pollution
11. Air pollutants and their sources
● Use of coal and oil for
manufacturing and
transport energy
production.
● Burning of forests for
pasture and cropland
Carbon Dioxide
● Burning of coal
containing sulphur
● Ores melting for
extraction of metals
from their sulphide ores
● Industrial processes
Sulphur Dioxide
12. ● Burning of fossil fuel
● Burning of forests and
savannah grasslands
● Municipal landfill
Methane
● Use of petrol and diesel
for transport
● Burning of biomass
● Nitrogen fertilization
● Burning of fuel at
stationary sources
Nitrogen Dioxide
13. ● Formation of soot,
smoke on burning of
coal
● Transport vehicles raise
dust and releases
smoke
● Building construction
Suspended
particulate matter
● Refrigerators, aerosols
spray
● Foam plastic for making
disposable fast food
containers
CFCs and chloro
compounds
14. Consequences
of
air
pollution
On Human health-
Air pollution causes many respiratory problems such as bronchitis, asthma, lung cancer,
pneumonia etc. Carbon dioxide affects the central nervous system, it also has affinity for
haemoglobin and forms carboxy haemoglobin. This then leads to death.
On the environment-
Air pollution has a major impact on the process of plant evolution by preventing photosynthesis
in many cases, with serious consequences for the purification of the air we breathe. It also
contributes to the formation of acid rain, atmospheric precipitations in the form of rain, frost,
snow or fog.
Global Warming-
On top of that, air pollution is a major contributor to global warming and climate change. In
fact, the abundance of carbon dioxide in the air is one of the causes of the greenhouse effect.
Normally, the presence of greenhouse gases should be beneficial for the planet but the excessive
concentration of these gases in the atmosphere is the cause of the recent climate change.
16. Ways to prevent air
pollution
The most basic solution for air
pollution is to move away from
fossil fuels, replacing them with
alternative energies like solar,
wind and geothermal.
Renewable fuel and clean
energy production
By reducing the amount of fuel
combusted for an individual’s
transportation needs, he/she can
lower the amount of pollutants
being released into the atmosphere
and cause less air pollution.
Usage of public transport
and carpooling
17. Burning of garbage is a huge
contributor to air pollution.
Another contributor to air
pollution is cigarette smoking.
Avoiding the burning of
garbage and smoking
The majority of our electricity
is produced from the combustion
of fossil fuels, which are a huge
contributor towards air
pollution.
Switching off the lights
when they’re not in use
18. By reusing products (that can be
reused), the amount of energy
that goes into manufacturing
another one of those products is
conserved. Furthermore,
recycling of products is also
more energy-efficient than the
manufacture of new ones.
Reusing and recycling
products
Firecrackers are generally used
to celebrate certain occasions.
However, they are known to
cause severe air pollution and
are, therefore, extremely
harmful to the environment.
Avoiding the use of firecrackers
20. Facts!! ❖ Air pollution kills at least 7 million every year, which is 15 times more people than die
from war and violence. These deaths are easily underestimated because the records will
cite lung disease or stroke, rather than the underlying pollution, as the actual cause of
death.
❖ 90% of people– that’s 6.9 billion people – breathe polluted air every day.
❖ Air pollution chops 6.6% off China’s GDP every year (3% for the US and 2.3% for the UK)
❖ Of the world’s 20 most polluted cities, 18 are in India.
❖ Air pollution kills more people in Africa than childhood malnutrition or poor sanitation.
❖ In the United States, it kills more people than guns and car accidents put together.
❖ It is the fourth-largest threat to human health, behind high blood pressure, dietary risks
and smoking.
22. Stubble burning in northern india has long been a
major cause of air pollution, but efforts to stop it
fail every year. According to some estimates,
farmers in northern india burn about 23 million
tonnes of paddy stubble every year.
23. Delhi waking up to the alarming rise in air
pollution, the authorities have rolled out a multi-
pronged strategy, including the tested odd-even
scheme for regulating use of private car, ban in
construction activities and entry of trucks in delhi
except the ones carrying essential items, to deal
with emergency situations.
24. According to the WHO, India has 14 out of the 15
most polluted cities in the world in terms of PM 2.5
concentrations. Other Indian cities that registered
very high levels of PM2.5 pollutants are Delhi,
Patna, Agra, Muzaffarpur, Srinagar, Gurgaon, Jaipur,
Patiala and Jodhpur, followed by Ali Subah Al-Salem
in Kuwait and a few cities in China and Mongolia.
25. Lucknow has recorded low pollution levels for the past 50
days since the lockdown began.For 31 of these days, the city’s
Air Quality Index (AQI) was ‘satisfactory’. According to an
analysis of Central Pollution Control Board (CPCB) air
pollution data available since 2016, pollution level from
March 25 till May 14 (50 days) was lowest in four years.
Reduction in vehicular load and halting of commercial and
industrial activities during the lockdown period have led to
this.
26. Thank you!
PPT composed by- Dhruv Upadhyay
Facts found by- Gaurang Goel
News found by- Diva Gamit
Images found by- Jainil Patel
