Discussion
The kraft process cooks wood chips with
Answer: B
Correct answer: sodium hydroxide and sodium sulphide
That mixture is white liquor, and the sulphide is what makes the kraft process kraft - German for strong - since it accelerates delignification and leaves the fibres less damaged than soda alone would. The sulphite process uses bisulphite and sulphurous acid instead, and it was displaced by kraft on pulp strength and on chemical recovery.
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