Ask a Question

What is used for pretreatment in Chemithermomechanical pulping?

← Prev Question Next Question →
+2 votes
in Food Packaging Technology by (63.0k points)
What is used for pretreatment in Chemithermomechanical pulping?

(a) Calcium propionate

(b) Calcium carbonate

(c) Sodium nitrate

(d) Sodium sulfite

This question was posed to me in an interview for internship.

The above asked question is from Mechanical Pulping in section Paper and Paper Based Packaging Materials of Food Packaging Technology

1 Answer

+2 votes
by (194k points)
selected by
 
Best answer
The correct choice is (d) Sodium sulfite

The explanation is: Chemithermomechanical pulping (CTMP) pulps are obtained by a comparatively mild chemical treatment followed by pressurized refining. Sodium sulfite is used for the mild chemical pretreatment. It increases the strength properties of TMP pulps even further.

Related questions

We welcome you to Carrieradda QnA with open heart. Our small community of enthusiastic learners are very helpful and supportive. Here on this platform you can ask questions and receive answers from other members of the community. We also monitor posted questions and answers periodically to maintain the quality and integrity of the platform. Hope you will join our beautiful community

Categories

Powered by TalkJarvis
...