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Acid Deposition on Forest - Case Study Example

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The paper "Acid Deposition on Forest" discusses that the contribution towards acid rain has reduced considerably in developed nations, than in developing nations.  North-East Asian nations are developing at a tremendous pace that the care towards the environment takes the back seat…
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Acid Deposition on Forest
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Download file to see previous pages Acidic deposition can occur in two ways such as wet deposition and dry deposition.
Dry deposition is the form of acid deposition in which dry particles such as fly ash, sulphates, nitrates and sulphur and nitrogen oxides are deposited on the surfaces. These particles get absorbed to the surface and might later turn to acids when they are in contact with water.
Wet deposition is a process by which the oxides come in contact with rain or moisture and get transformed to acids. Those acids whose pH is less the 5.5 are removed from the atmosphere by rain, snow or hail. The wet deposition of acids through rain is acid rain. “Acid rain or acid deposition, a form of precipitation (rain, snow, sleet or hail) containing high levels of sulphuric or nitric acids (pH below 5.5-5.6)” (The Columbia Encyclopaedia, 2008. Para1)
Acid deposition can pollute soil, air, water etc. and hence affect the environment. Emission of sulphur dioxide and nitrogen oxides can pollute a place which is in another geographic area, as these gases get carried away by the wind. In 1980, Canada stated that the emissions from the United States are contaminating forests and waters in Canada. After this, U.S Clean Air Act was enacted to reduce the sulphur dioxide emissions from power plants.
Smelting is a process by which pure metal is extracted from its ore. In the process, there will be slag, the solid metallic waste and emissions of gases such as sulphur dioxide, which is the main source of acid rain. When the sulphide ores are smelted, sulphur dioxide gas is produced which reacts with atmosphere to form a mist of sulphuric acid which comes down as acid rain.
Sudbury is one of the world’s largest smelting complexes in Canada. Sulphur dioxide emission from the plant caused acid deposition through acid rain and vegetation over 46,000 hectares had been bared. Efforts by Governments through clean air act has effectively curbed such emissions. ...Download file to see next pagesRead More
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