Upload
utsav-ashish
View
218
Download
0
Embed Size (px)
Citation preview
8/4/2019 Acid Rain and Its Impact
1/32
Introduction to
Acid Rain and Its Impact
Presented By: Prepared By:
Suman MaharjanSumit ShahUtsav Ashish KojuYuvraj Pandey
BEX:-A9Roll no. 38,39,42,43
8/4/2019 Acid Rain and Its Impact
2/32
Objectives
What is acid rain? How do we know if the rain is acid?
What causes acid rain (chemicalreactions)?
Where do the acid rain precursors comefrom?
How does acid rain affect the environment?
What can we do to protect our planet formacid rain?
2
2
8/4/2019 Acid Rain and Its Impact
3/32
Presentation Outline
Introduction to Acid Rain
Sources
Impact
Solution
Conclusion
Recommendation
References
3
3
8/4/2019 Acid Rain and Its Impact
4/32
4
8/4/2019 Acid Rain and Its Impact
5/32
Introduction to Acid Rain
Precipitated rain which is unusuallyacidic.
Posses low level of pH
Caused by mixture of sulphur dioxideand nitrogen oxides with water
5
5
8/4/2019 Acid Rain and Its Impact
6/32
6
Some falls back toEarth close to the
source as dry particles,gas and aerosols(dry deposition)
Reacts with sunlightand ozone; nitric(HNO3), andsulphuric acid(H2SO4) are produced It is dissolved in the
moisture in theatmosphere making
2H+ and SO42_
and can be carried largedistances before falling asrain or snow(wet deposition)
6
8/4/2019 Acid Rain and Its Impact
7/327
7
8/4/2019 Acid Rain and Its Impact
8/32
Introduction to Sox
Sox
Compounds of sulfur and oxygen molecules
Produced by burning fuels containing sulfuror natural sources such as volcanoes
Causes adverse impacts to vegetationincluding forest and agricultural crops
Damages freshwater lake and streamecosystems by lowering the pH of the water
8
8
8/4/2019 Acid Rain and Its Impact
9/32
8/4/2019 Acid Rain and Its Impact
10/32
The
Presen
tdayT
rut
Source: Columbia Universit surve 200410
10
8/4/2019 Acid Rain and Its Impact
11/32
TheP
resent
Day
Truth
11
11
8/4/2019 Acid Rain and Its Impact
12/32
SOURCES
12
8/4/2019 Acid Rain and Its Impact
13/32
Causes of Acid Rain
Fossil fuel combustion
Vehicle Emission
Industrial Emission
Coal Power Plant
13
13
8/4/2019 Acid Rain and Its Impact
14/32
Caused by Fossil Fuel
Fossil fuels are the natural resourceswhich take millions of years for itsformation.
Giga-tons of fossil fuels are usedyearly and only about the half part of itis absorbed by our atmosphere.
14
14
8/4/2019 Acid Rain and Its Impact
15/32
By Vehicle Emission
Burning petrol and oilin vehicle enginesgives off nitrogen
oxide. releases harmful
gases like sulphurdioxide, carbon
dioxide, carbonmonoxide fromvehicles.
15
15
8/4/2019 Acid Rain and Its Impact
16/32
By industrial Emission
Industries are mainsource ofenvironmental
pollution They give rise to
the level of sulphurdioxide and
Nitrogen inenvironment.
16
16
8/4/2019 Acid Rain and Its Impact
17/32
Coal Power Plant
Burning coal. Oil andnatural gas in powerstations gives offsulphur dioxide gas.
These gases mixwith water vapourand rainwater in theatmosphereproducing weak
solutions of sulphuricand nitric acids which fall as acidrain.
17
17
8/4/2019 Acid Rain and Its Impact
18/32
IMPACT
18
8/4/2019 Acid Rain and Its Impact
19/32
Impact of Acid Rain
On the plant
On the aquatic
On animals and birds.
On human beings.
On the constructions
19
19
8/4/2019 Acid Rain and Its Impact
20/32
Impact of Acid rain on aquatic life
Aluminum concentrationincreases due to acidrain.
The acidic waterdamages gills of fish
Acidity in water alsodamages the aquaticplants
Decline in population ofaquatic life
20
20
8/4/2019 Acid Rain and Its Impact
21/32
Impacts of Acid rain on Plants
Acidic rain of pH 4.6damages Seedlings
Aluminum toxicity
decline absorbingcapacity of roots
Amount of
chlorophyll declinesaffectingphotosynthesis ofplants
21
21
8/4/2019 Acid Rain and Its Impact
22/32
Monuments areeroded
Limestone andsandstonecorrodes due tosulfur
22
22Impacts of Acid rain onMonuments
8/4/2019 Acid Rain and Its Impact
23/32
results in layingdefective andporous egg
Affects in foodchain
Acidity in drinking
water affects healthof animals andbirds
Fig: Food ChainAll animals rely on one another byone way or the other and death of
one species brings adverse effectto the other.
23
23Impact of Acid rain on Animaland Birds
8/4/2019 Acid Rain and Its Impact
24/32
Impact on Human Beings
Various skin diseases
Respiratory diseases such as asthmadue inhale of sulfur content. Asthma,
along with dry coughs, headaches,and throat irritations can be caused bythe sulphur dioxides and nitrogen
oxides from acid rain. Contamination of water resources also
effects human health
24
24
8/4/2019 Acid Rain and Its Impact
25/32
REMEDIAL MEASURES
25
8/4/2019 Acid Rain and Its Impact
26/32
Solution to Check Acid rain
Sulphur dioxidecan be removedfrom powerstations chimneys
but this process isexpensive. Reduce the
amount ofelectricity
Use ofHydropower, windpower, solarpanels, tidal power
than diesel powerplants. 26
26
8/4/2019 Acid Rain and Its Impact
27/32
Fit catalyticconverters tovehicle exhaust.
Limit the number of
PRIVATE vehicleson the roads andincrease PUBLICtransport.
Strict Lawenforcement
27
27Solution to check Acid Rain[contd]
8/4/2019 Acid Rain and Its Impact
28/32
CONCLUSION
28
8/4/2019 Acid Rain and Its Impact
29/32
Results And Conclusion
Acid rain remains an acute problem in manyparts of the world and is threatened by the rapidindustrial development
Possesses elevated levels of hydrogen ions
(low pH) and can have harmful effects on plants,aquatic animals, and infrastructures
Caused by emissions of sulfurdioxide and nitrogen oxides which react withthe water molecules of rain water in theatmosphere to produce acids
One of the major environmental problems,affecting the planet, that needs to and can becontrolled by various ways
29
29
8/4/2019 Acid Rain and Its Impact
30/32
Recommendation
30
8/4/2019 Acid Rain and Its Impact
31/32
Recommendation
The gases should be treated beforeemission in power plant and brickfactories
Scrubber should be used to minimizethe vehicle emission
Industries should be compelled totreat their waste before throwing them
out to atmosphere Strict Government Laws should be
passed and regular monitoring should
be done. 31
31
8/4/2019 Acid Rain and Its Impact
32/32
Thank You