Facts behind prevention and control of air pollution | Actions You Can Take to Reduce Air Pollution

Facts behind prevention and control of air pollution | Actions You Can Take to Reduce Air Pollution

Different techniques are used for controlling air pollution caused by 'gaseous pollutants 'and that caused by 'particulate pollutants '. 

Methods of controlling gaseous pollutants : The air pollution caused by gaseous pollutants like hydrocarbons, sulphur dioxide, ammonia, carbon monoxide, etc. Can be controlled by using different methods:combustion, Adsorption and absorption. 

Facts behind prevention and control of air pollution | Actions You Can Take to Reduce Air Pollution

1) combustion : This technique is applied when the pollutants are organic gases or vapours. The organic air pollutants are subjected to 'flame combustion or catalytic combustion 'when they are converted to less harmful product carbon dioxide and a harmless product water. 

2) Absorption : In this method, the polluted air containing gaseous pollutants is passed through a scrubber containing a suitable liquid absorbent. The liquid absorbs the harmful gaseous pollutants in air. 

3) Adsorption : In this method, the polluted air is passed through porous solid adsorbents kept in suitable containers. The gaseous pollutants are adsorbed at the surface of the porous solid and clean air passed through. 

Methods of controlling particulates emissions: The air pollution caused by particulate matter like dust, soot, ash, etc. Can be controlled by using fabric filters, wet scrubbers, electrostatic precipitators and certain mechanical devices. 

4) mechanical devices : It works on the basis of the following : 

Gravity : In this process, the particulate settle down by the action of gravitational force and get removed. 

Sudden change in the direction of air flow : It brings about separation of particles due to greater momentum. 

5)Fabric filters : The particulate matter is passed through a porous medium made of woven or filled fabric. 

- The particulate present in the polluted air are filtered and gets collected in the fabric filters, while the gases are discharged. 

- The process of controlling air pollution by using fabric filters is called 'bag filtration '. 

6) Wet scrubbers: They are used to trap sulphur dioxide, ammonia and metal fumes by passing the fumes through water. 

7) Electrostatic precipitators : when the polluted air containing particulate pollutants is passed through an Electrostatic precipitators, it induces electric charge on the particles and then the aerosol particles get precipitated on the electrodes. 

Facts behind prevention and control of air pollution | Actions You Can Take to Reduce Air Pollution

People also ask

Did you know facts about air pollution?

Fact 1: An average American breathes 2 gallons of air per minute, which means around 3400 gallons of air each day. Fact 2: Inhaling air pollution takes away at least 1-2 years of a typical human life. Fact 3: It has effects as small as burning eyes and itchy throat to as large as breathing problems and death.

What is the purpose of air pollution prevention?

Air pollution is a serious environmental concern since it can cause several diseases in human beings, some even resulting in death. Therefore, the prevention of air pollution is very important. Air pollution is also known to have an adverse impact on a wide spectrum of life forms including crops and animals.

What is the solution in air pollution?

Driving less, in favor of public transportation, biking, or walking, helps decrease air pollution. Also, using cars with increased fuel efficiency or electric cars that do not rely on fossil fuels can decrease the amount of pollution we are contributing to the atmosphere.

Can pollution be controlled?

If everyone realizes the hazards it may create and cooperates to get rid of it, pollution may be controlled.

How can students help reduce air pollution?

Help Recycling - The most obvious things to reuse are plastic, glass, metal, and paper or fabric (paper and organic fabric are made of the same component, cellulose, and are recycled in a similar way). The color-coded trash bins show where each of these components can be put to be recycled in a proper way.

What are the 3 main causes of air pollution?

Vehicle emissions, fuel oils and natural gas to heat homes, by-products of manufacturing and power generation, particularly coal-fueled power plants, and fumes from chemical production are the primary sources of human-made air pollution.

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