24.Acid.Rain.11

24.Acid.Rain.11 - Acid Rain and its Remediation History of...

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Unformatted text preview: Acid Rain and its Remediation History of Acid Rain Acids that Contribute to Acid Rain Geography of Acid Rain Impacts of Acid Rain Remediation of Acid Rain Summary and Conclusions I. The History of Acid Rain Observed in Europe and America since the 1700s Rainwater pH is often as low as 4, occasionally down to 2 Recent (1999) pH Measurements in the US Prevailing Winds Explain Patterns Natural Acid Rain Natural acidity in precipitation mainly consists of carbonic acid At saturation, the pH cannot be driven lower than 5.5 to 5.7 So, how can the pH of precipitation be driven lower? II. Acids that Contribute to Acid Rain Carbonic acid, from carbon dioxide Sulfuric acid, from sulfur dioxide Nitric acid, from nitric oxide Acid Rain is Formed in the Atmosphere The acids are technically secondary contaminants produced from primary contaminants via oxidation and hydration Sulfur and Nitrogen Emissions Have Increased The emissions of SO x and NO x have...
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24.Acid.Rain.11 - Acid Rain and its Remediation History of...

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