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During this laboratory exercise students will design and build an air scrubber and assess air quality in a designated area. As a result, they will be able to describe and discuss several air pollutants and methods for detecting them and describe the chemical reactions behind how several monitoring systems function. Students will discover that one of the most important components of industrial air pollution control is scrubbers for the removal of sulfur. As any protein or protein-derived product burns, sulfur is emitted. Scrubbers remove the sulfur from the emissions by spraying a solution of calcium oxide or calcium carbonate into the stream of gas coming from the combustion chamber. This site links to an accompanying teacher site with hints and more information.
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