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    Seminar ON Air Pollution: Presented by Rupshikha Kalita ROLL NO-14/MSB/44 Ustm

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    prasanta deuri
    This seminar on air pollution presented by Rupshikha Kalita discusses the classification, sources, effects, and control of air pollution. It defines air pollution and classifies pollutants as primary or secondary. Sources discussed include natural sources like fires and volcanic eruptions, as well as man-made sources like industry, vehicles, and agriculture. The effects on human health include respiratory illnesses, and the effects on plants include damage to leaves and reduced photosynthesis. Control methods proposed include emissions controls in industry, reducing pollution at the source, using anti-pollution devices in vehicles, and increasing public awareness.

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    Seminar ON Air Pollution: Presented by Rupshikha Kalita ROLL NO-14/MSB/44 Ustm

    Uploaded by

    prasanta deuri
    111 views11 pages
    This seminar on air pollution presented by Rupshikha Kalita discusses the classification, sources, effects, and control of air pollution. It defines air pollution and classifies pollutants as primary or secondary. Sources discussed include natural sources like fires and volcanic eruptions, as well as man-made sources like industry, vehicles, and agriculture. The effects on human health include respiratory illnesses, and the effects on plants include damage to leaves and reduced photosynthesis. Control methods proposed include emissions controls in industry, reducing pollution at the source, using anti-pollution devices in vehicles, and increasing public awareness.

    Original Description:

    Notes on pollution

    Original Title

    Air pollution

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    This seminar on air pollution presented by Rupshikha Kalita discusses the classification, sources, effects, and control of air pollution. It defines air pollution and classifies pollutants as primary or secondary. Sources discussed include natural sources like fires and volcanic eruptions, as well as man-made sources like industry, vehicles, and agriculture. The effects on human health include respiratory illnesses, and the effects on plants include damage to leaves and reduced photosynthesis. Control methods proposed include emissions controls in industry, reducing pollution at the source, using anti-pollution devices in vehicles, and increasing public awareness.

    Copyright:

    © All Rights Reserved
    Download as PPT, PDF, TXT or read online from Scribd
    Download as ppt, pdf, or txt
    111 views11 pages

    Seminar ON Air Pollution: Presented by Rupshikha Kalita ROLL NO-14/MSB/44 Ustm

    Uploaded by

    prasanta deuri
    This seminar on air pollution presented by Rupshikha Kalita discusses the classification, sources, effects, and control of air pollution. It defines air pollution and classifies pollutants as primary or secondary. Sources discussed include natural sources like fires and volcanic eruptions, as well as man-made sources like industry, vehicles, and agriculture. The effects on human health include respiratory illnesses, and the effects on plants include damage to leaves and reduced photosynthesis. Control methods proposed include emissions controls in industry, reducing pollution at the source, using anti-pollution devices in vehicles, and increasing public awareness.

    Copyright:

    © All Rights Reserved
    Download as PPT, PDF, TXT or read online from Scribd
    Download as ppt, pdf, or txt
    of 11

    SEMINAR

    ON
    AIR POLLUTION

    PRESENTED BY RUPSHIKHA KALITA


    ROLL NO-14/MSB/44
    USTM
    INTRODUCTION
    • Air pollution is an atmospheric condition in
    which certain substances are present in
    concentrations which can cause undesirable
    effects on man and environment
    • These substances include gases,particulate
    matter,radioactive substances etc.
    CLASSIFICATION
    • On the basis of origin of pollutants air pollutants
    can be classified as-
    • Primary pollutants-These are emitted directly
    from the identifiable source
    e.g.CO,NO₂,SO₂,hydrocarbon,radioactive
    substances etc.
    • Secondantry pollutants-These are formed by
    interaction of primary pollutants with other
    primary pollutants or with some natural
    constituents.e.g.ozone(O₃),peroxyacetyl
    nitrate(PAN),photochemical smog etc.
    SOURCES
    • Natural sources:The natural sources of air pollution are
    volcanic eruptions,forest fire,biological
    decay,photochemical oxidation of terpenes,pollen
    grains of flower,spores etc.
    • Man-made:These are include industrial unit,vehicular
    emissions,fossil fuel burning,agricultural activities
    etc.The main pollutants emitted are fly ash and SO₂.
    Fertilizer plants,textile mills,refineries,chemical
    industries,paper mills are other sources of air
    pollution.Automobile exhaust is another major sources
    of air pollution.
    EFFECTS
    • Effects on human health:
    • Air pollutants affect on natural defenses of human and
    can result in lung cancer,asthma,chronic bronchitis and
    emphysema.
    • SO₂ causes constriction of respiratory passage and can
    cause bronchitis like condition.It can form acid
    sulphate particles,which can affect in lungs severely.
    • NO₂ can affect on lungs and cause chronic bronchitis
    and emphysema.
    • CO reaches lungs and combine with haemoglobin of
    blood to form carboxyhaemoglobin.it causes
    suffocation,dizziness,unconsciousness and even death.
    Effects on plants
    • Air pollution affects plants by entering through stomata,destroy
    chlorophyll and affect photosynthesis.
    • Pollutants also erode cuticle, waxy coating of the leaves and causes
    necrosis,chlorosis,epinasty and abscission of leaves.
    • Leaf blotching,necrosis and loss of yield are the main damages caused by
    SO₂.It is entering to leaf gets oxidised to SO₃,which in turn combines with
    water to form sulphuric acid.
    • NO₂ results in increased abscission and suppressed growth.
    • O₃ causes fleck on leaf surface,premature aging,necrosis and bleaching.
    • PAN causes silvering of lower surface of leaf,damage to young and
    suppressed growth.
    • Fluorides causes necrosis of leaf tip while ethylene results in
    epinasty,dropping of flowers.
    CONTROL
    • Particulate matter produced by industries can be controlled by
    precipitators,scrubbers and filters.
    • The amount of smoke produced by industries can be minimised by
    the use of some recent devices like smokeless chulhas and solar
    cookers and of biogas.
    • Minimize activities which cause pollution like transportation and
    energy production.
    • Using low sulphur coal in industries and removing NO₂ during the
    combustion process and controlling the flow of air and fuel in
    industries.
    • Planting more trees,reduction of pollution at source.
    • Vehicles should be fitted with anti-pollution devices so that
    pollutants are filtered.
    • An important aspect is to create public awareness about pollution
    hazards.

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