Application of In-situ CaCO3 Formation Method for Better Utilization of Recycled Fibers (1)

Yung Bum Seo; Min Woo Lee; Young Ho Lee; Jae Kwon Jung

doi:10.7584/ktappi.2014.46.5.019

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2014 Vol.46, Issue 5 Preview Page Next Page

Application of In-situ CaCO₃ Formation Method for Better Utilization of Recycled Fibers (1) 고지의 효과적인 활용을 위한 in-situ 탄산칼슘 부착 방식의 연구 (1)

30 October 2014. pp. 19-26

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Abstract

In-situ CaCO₃ formation on recycled wood pulp was studied to improve optical property and filler attach-ment to the fiber furnish in papermaking. We tried to attach calcium oxide (CaO) to the recycled fibers, old newspaper (ONP) in this case, by using selected polymers before in-situ CaCO₃ formation reaction on fibers, and then, CO₂ was injected to the furnish until all the CaO on fiber surfaces was consumed. It was found that the attachment of newly formed CaCO₃ to recycled fibers became stronger by attaching CaO to the fibers before in-situ CaCO₃ formation reaction. It was expected that the polymers used for the attachment of calcium source to the fiber furnishes helped to keep the newly formed CaCO₃ strongly attached to the fiber surface as well as to retain the impurities associated with calcium source and recycled fibers, if any. In-situ CaCO₃ formation gave higher brightness and much less ERIC value in ONP sheet than the case when the equivalent amount of GCC was added to the furnish.

Keywords

Retention

polymer

in-situ CaCO₃ formation

ONP

CaCO₃ attachment

References

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Information

Publisher :Korea Technical Association of The Pulp and Paper Industry
Publisher(Ko) :한국펄프종이공학회
Journal Title :Journal of Korea TAPPI
Journal Title(Ko) :펄프종이기술
Volume : 46
No :5
Pages :19-26
Received Date : 2014-09-12
Revised Date : 2014-10-02
Accepted Date : 2014-10-03
DOI :https://doi.org/10.7584/ktappi.2014.46.5.019

Journal of Korea TAPPI ISSN:0253-3200(Print) 펄프종이기술

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