How Does Water Distillation Work?

Principles of Water Distillation

The process of distilling water is a method of purification involving heat. The water is gradually heated by a variety of means to the point of boiling and vaporization. At this point, the water vapor is separated from such undesirable elements as iron and other impurities as the water vapor rises and is collected.

Why the Process Works

Water has relatively lower boiling point than the majority of impurities, such as minerals. By keeping the heat at a consistent temperature, the water vaporizes and is separated from the undesired elements. The process of distillation is also an excellent means of separating organisms from water. As the water vapor is collected and allowed to cool, the water molecules change from their gas state back to a liquid or water.

Undesired Elements

Elements, including minerals and salts, which remain in the container after the water evaporates are collected and discarded. Typically the distillation process is repeated at least one more time to thoroughly distill the water.

Resources

• Water distillers
• More about home water distillers