Presentation on theme: "Air Pollution By: JW174327 Option E. What is an Air pollutant? What are the Sources of Air pollution? What are the effects of Air pollution? What are."— Presentation transcript:
What is an Air pollutant? What are the Sources of Air pollution? What are the effects of Air pollution? What are the methods of reduction?
Air Pollutant A Substance present in sufficient concentration in the air to produce harmful effects on humans, animals, vegetation, or materials. Primary Added directly to air from a given source Ex. CO 2 from burning fossil fuels Secondary Formed in the atmosphere through chemical reactions Ex. Smog
5 Major Air Pollutants Carbon Monoxide CO Nitrogen Oxides NO x Sulfur Oxides SO x Particulates Hydrocarbons
Carbon Monoxide Colorless Tasteless Odorless Toxic Formed by incomplete Combustion of Carbon Automobiles, buses, trucks, small engines, industrial processes
Health Effects from CO Reduces the ability of blood to deliver oxygen to vital tissues, affecting primarily the cardiovascular and nervous systems Lower concentrations- Affect individuals with heart disease and to decrease maximal exercise performance in young, healthy men Higher concentrations- cause symptoms such as dizziness, headaches, and fatigue Carbon Monoxide
Sources 90% comes natural Oxidation of methane gas 10% Man-made Incomplete Combustion of fossil fuels Forest fires Gasoline Industries Carbon Monoxide 2CH 4 + 3O 2 2CO + 4H 2 O
Methods of Control Thermal Exhaust Reactor Catalytic Converter Carbon Monoxide