Assignment on control Air pollution

Added on - 22 Feb 2021

  • 6

    Pages

  • 1912

    Words

  • 12

    Views

  • 0

    Downloads

Trusted by +2 million users,
assist thousands of students everyday
Showing pages 1 to 3 of 6 pages
Table of ContentsIntroduction................................................................................................................................................1The objective of the report.........................................................................................................................2Air Pollution Causes....................................................................................................................................2Primary Pollutants..................................................................................................................................3Secondary Pollutants..............................................................................................................................3Air Pollution Effects....................................................................................................................................3Air Pollution Effects on Health................................................................................................................4Policies to diminish air pollution................................................................................................................5Reducing exposure through city planning..............................................................................................5Recommendations to control Air pollution................................................................................................5References..................................................................................................................................................6LIST OF FIGURESFigure 1: Emissions by Source Category......................................................................................................2Figure 2: Petrochemical Smog Formation....................................................................................................3Figure 3: Death Rates from Air pollution, World, 1990 to 2017..................................................................4IntroductionThe alternation in the quality of air that can be characterized by biological, chemical andphysical extents of pollutants in the air is known as Air Pollution. Another explanation of AirPollution is irregular rise in the percentage of some constituents of the atmosphere and unwantedimpurities presence. When we think about air pollution, we don’t consider germs, but it is reallythe similar impression. The germs can be the pollutants but until those germs are sneezed out, airwouldn’t be polluted. The air pollution effects ranges from rising temperatures to higher diseaserisks. Some of the examples of very common air pollutants include methane, soot, smoke, carbondioxide and mold. Air Quality Index of AQI is the measure of outdoor air pollution in U.S.According to which the concentration of five major pollutants in the air rate its quality. Thesepollutants include particulate matter (particle solution), sulfur dioxide, ground-level ozone,carbon monoxide and nitrogen dioxide. Some of these pollutants also contributed indoor aircontamination along with cigarettes smoke, formaldehyde, radon, asbestos, VOCs (VolatileOrganic Compounds) and other constituents.Air Contamination causes a major hazard to health and climate, from smoke dangling over citiesto inside home smoke. There is a wide range of diseases related to pollution. These diseasesinclude heart diseases, lung tumor, COPD, stroke and respirational infections.
The objective of the reportThe main objective of the report is determining the air pollutants and their effects on humanhealth. We will also discuss the government policies in controlling of air pollution and the stepswe should take as an individual to tackle this situation.Air Pollution CausesWhen we think about the term “Air Pollution”, we likely to think about activities of human, forexample burning of fossil fuels, emission from cars, boats and planes. Air pollution can also become from sources of nature too. In the natural pollution sources, volcanoes are the greatexamples. A large amount of gases and particles are produced by them and they send up into theatmosphere through eruptions. A large amount of potentially harmful particulate matter andgases are produced by forest fires, which are also natural procedures. Not depending on source,there are two ways how pollution enter into the atmosphere.1.Point Source Pollution.2.Non-point source Pollution.When the source of foundation of the air pollutants is single like smokestacks from a singlefactory then it is known as “Point Source Pollution”. When the origins of the pollutants aremany, for example all the cars in U.S then it is known as “Non-point source pollution”. As thesources of the pollutants are different same is the case with their effects. There are two maincategories of air pollution based on their effects which include:Figure1: Emissions by Source Category
Primary PollutantsThe kind of pollutants that goes directly into the surroundings are known as primary pollutants.The major dissimilarity between primary and secondary impurities is that secondary are formedin atmosphere. There are many sources of primary pollutants include: natural gas power plants,coal-fired power plants, natural forest fires, natural gas burning, volcanoes and many more. Theprimary pollutants contribute to form secondary pollutants. Due to economic and technologychanges and improved regulations the emission of primary pollutants is controlled. Primarypollutants include volatile organic compounds, NOx, CO, SOx, Mercury, particulate matter andmany more.Secondary PollutantsThese pollutants are not emitted directly into the atmosphere but they are formed into theatmosphere as a result of pollutants reacted with molecules in the atmosphere. From manydifferent compounds secondary pollutants can be formed. The interactions of primary pollutantswith the molecules of the atmosphere like oxygen, hydrocarbons and water resulted in formingphotochemical smog. The photochemical smog is formed by various secondary pollutants likeperoxyacyl nitrates (PANs), nitric acid and ozone. Due to the inversion layers, primary pollutantscan’t be dispersed into the atmosphere and where they are produced, smog is formed over thearea. This is the reason in warm dense cities smog is prominent.Figure2: Petrochemical Smog FormationAir Pollution EffectsThe human health and surroundings are effected badly by a variety of air pollutants. Thecombustion from generation of power, space heating vehicle traffic generated these air pollutantsprincipally in many areas of Europe. The undesirable effects of air pollution on our environmentincludes:
desklib-logo
You’re reading a preview
Preview Documents

To View Complete Document

Become a Desklib Library Member.
Subscribe to our plans

Download This Document