black liquor

black liquor
A trade term of the paper pulp industry; the residual liquor coming from the digesters in which wood in the form of chips is cooked under heat and pressure in a solution of chemicals. The organic matter binding the cellulose fibers in the wood is dissolved out. After the cooking is completed, the wood pulp is removed from the solution and goes to the pulp treating section of the plant. Babcock & Wilcox v North Carolina Pulp Co. (DC Del) 35 F Supp 215.

Ballentine's law dictionary. . 1998.

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