In industrial chemistry, black liquor is the spent cooking liquor from the kraft process when digesting pulpwood into paper pulp removing lignin, hemicelluloses and other extractives from the wood to free the cellulose fibers.
The equivalent spent cooking liquor in the sulfite process is usually called brown liquor, but the terms red liquor, thick liquor and sulfite liquor are also used.
Read more about Black Liquor: Composition, History, Usage, U.S. Tax Credit 2007 - 2010
Famous quotes containing the words black and/or liquor:
“As you grow older, you’ll see white men cheat black men every day of your life, but let me tell you something and don’t you forget it—whenever a white man does that to a black man, no matter who he is, how rich he is, or how fine a family he comes from, that white man is trash.”
—Harper Lee (b. 1926)
“The liquor of summer nights
Accumulates in the bottom of the bottle.”
—John Ashbery (b. 1927)