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:
“The fact that white people readily and proudly call themselves “white,” glorify all that is white, and whitewash all that is glorified, becomes unnatural and bigoted in its intent only when these same whites deny persons of African heritage who are Black the natural and inalienable right to readily—proudly—call themselves “black,” glorify all that is black, and blackwash all that is glorified.”
—Abbey Lincoln (b. 1930)
“The liquor of summer nights
Accumulates in the bottom of the bottle.”
—John Ashbery (b. 1927)