miércoles, 12 de enero de 2011

Pollution Management

Introduction of contaminants into the environment that harm the ecosystem.

Remember when we talk about pollution last semester. Now, it is time to go deeper on this topic. We must understand how pollution is generated by human activity and how we can reduce pollution.

Since the start of the Industrial Revolution, Earth have had to endure a variety of new and increased amount of pollutants.

Fossil fuels + big factories around the world + increased of population and production = Poll

Nowadays, governments of all around the world and the global society have started to be aware about the harm that human activity is causing to the world and are trying to reducing it working towards a sustainable development.

Pollution Management

The following concepts have been already established in a previous post

Point source: The origin of the pollution can be tracked down easily to an specific agents

Non-point source: There are many damaging agents that might cause the pollution

We could classify the sources of pollutants according from where they are found: air, soil, water.

Water pollution generated by the oil spills by the British Petroleum Company in the Gulf of Mexico is an example of point source pollution.

Another point source pollution: The wastes left by  the activity of “the mining and metals company Molymex’s plant in the city of Cumpas in northern Mexico’s Sonora state, is severely contaminated with baked trioxide molybdenum, according to a University of Arizona study release last week. (Business News Americas).

http://www.bnamericas.com/news/metals/Study_Detects_Molymex_Soil_Pollution

Air pollution in Mexico city due to mostly due to vehicle exhausts. Pollutants include carbon monoxide, nitrogen dioxide, ozone, benzenes and aldehydes.

http://www.sbg.ac.at/ipk/avstudio/pierofun/mexico/air.htm

Water pollution in Jiujiang City, Jiangxi Province, a factory directly discharges wastewater into Poyang Lake.

http://www.greenpeace.org/eastasia/photosvideos/slideshows/china-water-pollution-slidesho

Lightning is a major natural source of nitrogen oxides pollution.

Natural sulphur dioxide pollution come from different sources. They include release from volcanoes, biological decay and forest fires. Actual amounts released from natural sources in the world are difficult to quantify.

http://www.ace.mmu.ac.uk/eae/acid_rain/older/Natural_Sources.html

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