Chem 1A Research Methods

Chem 1A Research Methods - Distillation The oldest method...

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Distillation The oldest method of water filtration. Water is first boiled and the water vapor rises to a condenser where cooling water lowers the temperature so the vapor is condensed and collected. Removes a wide range of contaminants, but some are carried into the condensate. Reusable, but consumes a lot of energy.
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Carbon Absorption Commonly used as home water filtration because it removes unpleasant tastes, including distasteful chlorine. Activated carbon removes many chemicals and gases, and can also remove microorganisms. Has a long life. Does not efficiently remove ions, dissolved solids, or heavy metals.
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Ultrafiltration A membrane separates dissolved molecules based on their size by passing a solution through a very fine filter. Therefore, small molecules, such as solvents and ionized contaminants, are able to pass the filtration. Effectively removes most particles, pyrogens, microorganisms, and colloids, but will not remove dissolved inorganics.
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Chem 1A Research Methods - Distillation The oldest method...

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