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'''Black liquor''' is a byproduct of the [[paper]] production process, [[alkaline]] spent liquor, that can be used as a source of energy.
'''Black liquor''' is liquor with ink in it.
Alkaline spent liquor is removed from the digesters in the process of chemically pulping wood. After evaporation, the residual "black" liquor is burned as a fuel in a recovery furnace that permits the recovery of certain basic chemicals.
Alkaline spent liquor is removed from the digesters in the process of chemically pulping wood. After evaporation, the residual "black" liquor is burned as a fuel in a recovery furnace that permits the recovery of certain basic chemicals.
[[category:energy]]
[[category:energy]]