Rekayasa Lingkungan - 07 - Pemanasan Global

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PEMANASAN GLOBAL
Arif Rahman, ST MT

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Pencemaran Udara

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Polutan
Oksida Karbon (COx),
Oksida Sulfur (SOx),
Oksida Nitrogen (NOx),
Amoniak (NH3)
Gas Senyawa Organik, misal metana
Chlorofluorocarbons (CFCs)
Aerosol partikel halus
Logam beracun, misal Cd, Co
Radioaktif
Bau

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Polutan

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Sumber Polutan

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Pemanasan Global

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Pemanasan Global

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Pemanasan Global
Efek rumah kaca (Greenhouse Effect)
Penipisan ozon (Ozone Depletion)
Perubahan iklim (Climate Change)
Hujan asam (Acid Rain)

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Efek Rumah Kaca

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Efek Rumah Kaca

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Efek Rumah Kaca

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Efek Rumah Kaca

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Efek Rumah Kaca

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Efek Rumah Kaca

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Efek Rumah Kaca

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Efek Rumah Kaca

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Efek Rumah Kaca

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Penipisan Ozon
The ozone layer forms in the upper atmosphere when UV
radiation reacts with oxygen (O2) to form ozone (O3).
The ozone absorbs UV radiation and thus prevents it
from reaching the surface of the earth where it would
damage the DNA of plants and animals.
Various air pollutants, such as
chlorofluorocarbons (CFCs), enter the
upper atmosphere and break down ozone
molecules.

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Penipisan Ozon

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Penipisan Ozon
• CFCs have been used as
refrigerants, as propellants
in aerosol sprays, and in the
manufacture of plastic
foams.
• When ozone breaks down,
the ozone layer thins,
allowing UV radiation to
penetrate and reach the
surface of the earth.
• Areas of major ozone
thinning, called ozone
holes, appear regularly over
Antarctica, the Arctic, and
northern Eurasia.

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Penipisan Ozon

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Penipisan Ozon
These images of
the ozone hole
were taken by
NASA between
September 1981
and September
1999.

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Penipisan Ozon

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Perubahan Iklim

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Perubahan Iklim

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Perubahan Iklim

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Perubahan Iklim

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Perubahan Iklim

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Perubahan Iklim
Ocean Conveyor Belt

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Perubahan Iklim

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Perubahan Iklim

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Perubahan Iklim

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Perubahan Iklim

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Perubahan Iklim

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Perubahan Iklim
Disaster

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Perubahan Iklim

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Perubahan Iklim
Deforestration/
Desertification

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Perubahan Iklim
Algal bloom /
Eutrophication

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Perubahan Iklim

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Hujan Asam
COX + H2O  H2CO3  H+
+ CO3
2-
NOX + H2O  HNO3  H+
+ NO3
-
SOX + H2O  H2SO4  H+
+ SO4
2
-
(rain, snow) (particulates, gases)
COX
NOX
SOX
NH3 + H+
 NH4
+
NH3

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Hujan Asam

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Hujan Asam

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Selamatkan bumi bersama

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