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Learn about the sources of air pollution, its effects on human health and the environment, and the mechanisms involved. Discover how to measure and control air pollution.
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FUNDAMENTAL TO ENVIRONMENTAL ENGINEERING EAT232/3 SEM I, 2014-2015 AIR POLLUTION –Sources & Control S. Ragunathan AMPRIM, MIMM, AMESM Dip. (Public Health), B. Tech (Env), MSc. (Env. Eng), phD(Polymer Recycling) School of Environmental EngineeringUNIVERSITY MALAYSIA PERLIS
COURSE OUTCOME (C.O.) EAT232/3 Course Outcome
EVALUATION CONTRIBUTION Examination: 80% • Final Examination = 60% • Mid Term Examination 1 = 10% • Mid Term Examination 2 = 10% Continual Assessment: = 20% • Assignments 20% • Total = 100 %
WHAT IS EXPECTED FROM YOU? • What is air pollution and how you define it? • What are the major natural and anthropogenic sources. • What is the effect to Human and environment? • What is the mechanism involve? • How to measure it and control ?
WHAT IS AIR POLLUTION • The presence in the outdoor atmosphere (ambient air) of one or more contaminants in such quantities and for such duration as to be harmful or injurious to : - Human health or welfare - Animal or plant life - Property • Addition of harmful substances to the atmosphere resulting in damage to the environment, human health, and quality of life.
Sources of Air Pollution NATURAL SOURCES
Sources of Air Pollution Anthropogenic Sources
INTRODUCTION TO AIR POLLUTION • 1. Components of fossil fuel • a. Hydrocarbons • i. when incompletely burned form: carbon monoxide, unburned hydrocarbons, CO2 and water • ii. when completely burned form: CO2 and water • b. Contaminants: • i. sulfur → (heated) → Sulfur monoxide, dioxide, trioxide, etc. (SOx) • ii. Mineral contaminant → (heated) → Particulates (e.g. lead and mercury) • iii. Nitrogen gas → (heated) → Nitric oxide and nitrogen dioxide (NOx) • c. Many of the pollutants react with solar energy and water to produce secondary pollutants, for example: SOx + H2O → H2SO4 (sulfuric acid)
Sources of Air Pollution Anthropogenic Sources 2. Photochemical smog a. Unburned hydrocarbons and NOx from power plants and automobiles react with sunlight to form secondary pollutants: ozone, formaldehyde, etc. Ozone erodes rubber, irritates the respiratory system and damages plants.
Sources of Air Pollution Indoor air pollution