Tag: evs - i

Air pollution is due to various substances that holds the potential to hinder the atmosphere or the well  being of the living beings surviving in it. The sustainment of all things living is due to a combination of gases  that collectively form the atmosphere; the imbalance caused by the increase or decrease of the percentage  of these gases can be harmful for survival. All the above mentioned a, b & c points are the cause of air  pollution.

The use of excessive chemical fertilizers and pesticides results in the water pollution and soil pollution. The construction of the housing estates results in air pollution. The quarrying of the limestone also results in the release of the particles causing air pollution. The increase in the forest reserves does not result in any kind of pollution. 

Lead is an important pollutant of soil and atmosphere. Lead is a heavy metal and very immobile element. Hence, the lead may quickly reach very high concentrations locally. Lead is a prominent pollutant released from factories manufacturing dry cells and batteries. In the atmosphere, lead is released by combustion of fossil fuels. Fossil fuels contain lead compounds as an additive as antiknock agents. Combustion of such fuel in vehicles leads to air pollution.

Aerosols are the minute particles that are released with the pressure and remain suspended in the air. These can be sold particles or liquid droplets. The natural aerosols appear in the form of the fog, dust, forest exudates, geyser steams etc. The anthropogenic aerosols are more harmful and persist for the longer duration, like smoke, particulate matter etc. The emission from the jets comprises mainly of the fluorocarbons that are emitted with an immense pressure to provide propulsion to the engine.

Hydroelectric power is the cleanest form of electricity generation without contributing to the air pollution as it does not require the burning of fuel for working and water is provided by a natural force and moreover, it is renewable by rainfall causing refilling of reservoir. The dams are built which provide storage and it helps in reducing greenhouse gases emissions apart from the fact that once it becomes operative these have a low maintenance cost.

There are several contaminants found in air. It is very important to purify this polluted air .A fine spray of water in a device known as scrubber can effectively separate many gases such as ammonia and sulphur dioxide.