Wells drilled into the soil to monitor the presence

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Unformatted text preview: The air that comes out of the well is saturated with carbon tetrachloride vapors at 50°F (10°C). It has been suggested that this phenomena might be used to remove the carbon tetrachloride from the soil. As the carbon tetrachloride vapors come out of the well they could be condensed and captured, thus removing carbon tetrachloride from the soil. It is desired to remove 99% of the carbon tetrachloride from the air stream coming out of a well to reduce the air pollution. To achieve this what must be the temperature of the gas stream? (Assume that the gases coming out of the well contain only air and carbon tetrachloride and that the ambient pressure at Hanford is 1.00 standard atmosphere.) SOLUTION We first need to find the vapor pressure of carbon tetrachloride at 50°F (10°C). Using the Antoine Equation with the parameters from Table B.4 gives 6.87926 1212.021 226.409 6.87926 1212.021 10 226.409 1.75246 56.46 mm Hg This gives the mole fraction of carbon tetrachloride in the gas stream coming out of the well as . 0.0743 If w...
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