Drying
Drying is a mass transfer process consisting of the removal of water or another solvent by evaporation from a solid, semi-solid or liquid. This process is often used as a final production step before selling or packaging products. To be considered "dried", the final product must be solid, in the form of a continuous sheet (e.g., paper), long pieces (e.g., wood), particles (e.g., cereal grains or corn flakes) or powder (e.g., sand, salt, washing powder, milk powder). A source of heat and an agent to remove the vapor produced by the process are often involved. In bioproducts like food, grains, and pharmaceuticals like vaccines, the solvent to be removed is almost invariably water.
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Famous quotes containing the word drying:
“The drying up a single tear has more
Of honest fame than shedding seas of gore.”
—George Gordon Noel Byron (1788–1824)
“Just as petals fall from drying garlands, which you can see aimlessly swimming in wine-bowls are we lovers, who now puff up our chests, but perhaps tomorrow the fateful day will shut us down.”
—Propertius Sextus (c. 50–16 B.C.)
“Generally speaking, the political news, whether domestic or foreign, might be written today for the next ten years with sufficient accuracy. Most revolutions in society have not power to interest, still less alarm us; but tell me that our rivers are drying up, or the genus pine dying out in the country, and I might attend.”
—Henry David Thoreau (1817–1862)