Environmental Components Of Environment

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SYNTHESIS AND CHARACTERIZATION OF CERIUM OXIDE NANOCOMPOSITES AND THEIR CATALYTIC APPLICATIONS IN DIESEL SOOT ABATEMENT Introduction:- Air is the most essential constituent of environment for the sustenance of life on earth. In pure air, the proportion of different constituents like oxygen, nitrogen and other gases is fixed and definite. Overall health of our body and mind heavily depends upon the amount of pure, fresh air breathed. But, now a day’s pollution is the biggest threat to life. Major part of environment is getting polluted because of the mixing of particulate matter (PM), nitrogen oxides (NOX), & volatile organic compounds (VOC’s) produced by emission from diesel engines. Diesel engines are one of the largest contributors to environmental pollution problems due to the emissions of diesel particulate materials (DPM) and nitrogen oxides (NOx). Exposure to these emissions is hazardous to health. This particulate matter (soot) which is released into the atmosphere can cause a great threat to the environment and the health of human beings. They can cause and enhance respiratory, cardiovascular and allergic diseases. Diesel particulate emissions are supposed to induce health problems such as asthma, bronchitis and most importantly lung cancer; for this reason there is an increasing attention regarding exhaust emissions in general and on diesel soot in particular. With increasing concern about the environment the Government of India instituted Bharat stage emission

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