Food processing presentation for bsc agriculture hons
Acid Rain....
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3. Acid Deposition Acid deposition involves the deposition of both wet and dry acidic components
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8. The Formation of Acid Rain Burn fossil fuels in Transport, Industry, Homes, power stations The rest reacts with sunlight and ozone in the atmosphere; nitric (HNO 3 ), and sulphuric acid (H 2 SO 4) are produced Gas, Oil, Coal Some falls back to Earth close to the source as dry particles, gas and aerosols (NO x and SO 2 ) (dry deposition) NO 2 SO 2 It is dissolved in the moisture in the atmosphere making 2H + and SO 4 2 _ and can be carried large distances before falling as rain or snow (wet deposition) TRANSBOUNDARY POLLUTION H + NO 3 _ SO 4 2 _
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13. The Result Acids activate aluminium from the soil which leaches into water and fish die. Drinking water is contaminated This stand of trees near Most, Czech Republic, has completely died. Buildings and precious stone objects are weathered away as the stone reacts with the acid When soil is contaminated, cereal (arable) production drops
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