What is Crude Tall Oil?
Crude tall fuel, also known as CTO, is a byproduct of the Kraft pulping process used in papermaking. The Kraft process uses a combination of sodium hydroxide and sodium sulfide to break down wood fibers into pulp. This separates the lignin and hemicellulose from the cellulose fibers.CTO is collected when acids are added to the black liquor formed as a byproduct of the...
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