enviromental pollution & air pollution


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this presentation made by koya university students of chemical engineering department&designed by shwan sawan

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enviromental pollution & air pollution

  1. 1. EnvironmentalpollutionPrepared by:• Shwansarwan• BanazS.abdul• Bashdar H.muhammed• HalwestM.rasheed• Kaiwan N.hasan• Kosrat S.hamasalih• Muhammed S.mustarfa• Rebaz M.abdula• Renas F.othmanSupervised by :Dr.falakMr.rebwar
  2. 2. Definition of environmentalpollution
  3. 3. Types of pollution1.Air pollution2.Water pollution3.Noise pollution4.Soil pollution5.Marine pollution
  4. 4. Air pollutionAir pollution are definedasthe “presence of one ormoreontaminants orpollutantsubstances in theatmosphere thatcauses theharmful effect on thehumanhealth, plant &animal”.
  5. 5. Types of Air pollution1. PRIMARY POLLUTANAT2. SECONDARY POLLUTANT1. PRIMARY POLLUTANATPrimary Pollutants: These areemitted directly from thepoint source (identifiable sources)e.g.carbon monoxide (CO),oxides of nitrogen (NOx),oxides of sulphur (SOx),Hydrocarbons, Radioactivesubstances etc.
  6. 6. 2. SECONDARY POLLUTANTSecondary Pollutants: These are formed byinteraction of primary pollutants with otherprimary pollutants or with some constituentse.g. ozone, peroxyacetyl nitrate(PAN), photochemical smog etc.Types of Air pollution1. PRIMARY POLLUTANAT2. SECONDARY POLLUTANT
  7. 7. Sources of air pollutionMan made sources1.Burning of fossil fuels2.Automobiles3.Steel plants4.fertilizer industries5.Thermal power plant6.Textile industries7.Chemical andpesticides plantsNatural sourcesA.Forest fire B.Bio pollutions C.Volcanic eruptionC.
  8. 8. • Air pollution produced by ships may alterclouds, affecting global temperatures.• Air pollution comes from both naturaland man made sources.• Motor vehicle emissions are one of theleading causes of air pollution.• Metals production factories, plasticsfactories, and other heavy industry.• Agricultural air pollution comes fromcontemporary practices which includespraying of pesticides and herbicides.CAUSES OF ENVIRONMENTALPOLLUTION
  9. 9. EFFECTS OF ENVIROMENTALPOLLUTIONSHUMAN HEALTHAdverse air quality can killmany organisms includinghumans.Ozone pollution can causediseases, throatinflammation, chest pain, andcongestion.Water pollution causesapproximately 14,000 deathsper day, mostly due tocontamination of drinkingwater by untreated sewage in
  10. 10. GENERAL EFFECTS OFENVIRONMENTAL POLLUTION1.Water pollution.2.Global warming.3.Toxins may pass through trophlevels,becoming exponentially moConcentrated in the process.4Carbon dioxide emissionscause ocean acidification.5.The emission of greenhousegases leads to global warming whaffects ecosystems in many way
  11. 11. Extent of pollutionLocal scaleOnly affect a certainarea(Air, water, land, noise)Regional scaleSpread over countriesAir and waterGlobal scaleSpread over continentsGlobal warming/ Ozone depletio
  12. 12. CFCS (CHLOROFLUOROCARBONS)Chlorofluorocarbons, commonly known as CFCs, are agroup of man-made compounds containingchlorine, fluorine and carbon. They are not foundanywhere in nature. The production of CFCs began inthe 1930s for the purpose of refrigeration. Sincethen they have been extensively utilized aspropellants in aerosols, as blowing agents in foammanufacture and in air conditioning. There are noremoval processes or sinks for CFCs in the lowestpart of the atmosphere called the troposphere. As aresult they are transported up into thestratosphere, between 10 to 50 km above the Earthssurface, where they are broken down by ultraviolet(UV) radiation from the Sun, releasing free chlorineatoms which cause significant o
  13. 13. OZONEThe ozone layer is a deeplayer in the , stratosphereencircling the Earth, that haslarge amounts of ozone in it.The layer shields the entireEarth from much of theharmful ultraviolet radiationthat comes from thesun. Interestingly, it is also thisultraviolet radiationthat forms the ozone in thefirst place. Ozone is aspecial form of oxygen, madeup of three oxygen atoms
  14. 14. Acid rain"Acid rain" is a broad term referring to a mixture of wet and drydeposition (deposited material) from the atmosphere containing higherthan normal amounts of nitric and sulfuric acids. The precursors, orchemical forerunners, of acid rain formation result from both naturalsources, such as volcanoes and decaying vegetation, and man-madesources, primarily emissions of SULFUR DIOXIDE (SO2) and NITROGENOXIDES (NOX)
  15. 15. Air pollution in indiaThe World healthOrganization (WHO) whichrates only mega cities ofthe world has rated Delhithe fourth most pollutedcity ion the world.However compared to othercities in India, Delhi is not atthe top of the list ofpolluted cities. Our countryhas several pollutionhotspots.The recent release from theCentral Pollution Control
  16. 16. Controlling air pollution1.Keepgarbage, pest andanimalwastes, andyard wastesout ofroadsideditches, storm drains andwaterways.2.If youhavelivestock, exclude themfromenteringdrainageditches, creeks andstreams ormanage
  17. 17. Controlling air pollution3.Pave onlywherenecessary. Itincreasesrunoff duringstorms andpeakflows, resulting inflooding anderosion.4. Learnabout yourlocalwatershedand how it isinterconnected with yourimmediateneighbors, thesurrounding
  18. 18. • www.slideshare.com/airpollution-111221031749-phpapp01• www.slideshare.com/environmentalpollution-110611081323-phpapp02• www.slideshare.com/pollution-100421232545-phpapp02• www.slideshare.com/pollution-120201093443-phpapp02• www.slideshare.com/pollutioni-110430044156-phpapp02• www.greenpeace.org/me2References: