JAM Classes

Control of air pollution (gaseous and particulate matter) In the previous topic we know that air pollution causes 7 million deaths per year worldwide, hence for the environmentalists it become a matter of great concern to lower down this figure because every life matters. Here in this section we discuss various control measures of gaseous and particulate matter Control of gaseous air pollutants Gaseous air pollutants consist of carbon monoxide, carbon dioxide, sulfur oxides, nitrogen oxides, hydrocarbon, methane gas, organic and in organic acid gasses. We also know that these gaseous pollutants originate from a variety of sources such as point stationary sources and mobile sources as discussed in previous topic. similarly, here we discuss the control measures of gaseous air pollutants under two headings. A. Control of gaseous air pollutants at stationary sources : Environmental scientists devised a number of control measures for gaseous pollutants at stationary sources these ...

Air Pollution, Types, Sources and Effects According to U. S. Environmental Protection Agency (USEPA) pollution is defined as presence of matter or energy whose nature, location, or quantity produce undesired environmental effects. According to Keller (1988) pollution is a substance that is in the wrong place in the environment, in the wrong concentrations or at the wrong time such that it is damaging to living organisms or disrupts the normal functioning of the environment. Some of the other definitions of the environmental pollution are: The change in the physical, chemical and biological characteristics of the air, water and soil. Pollution is the impairment of the quality of some portion of the environment by the accumulation of harmful substances. As far as the word pollution is considered it comes from the Latin word polluere which stands for contamination. The contaminations are very harmful and are referred to as pollutants. Fig.Air Pollution.    ...