Investigate the effect of anionic trash management  through removal and neutralization of  dissolved and colloidal substances (DCS) On properties of CMP pulp and paper

Akbari, Moghadaseh; Resalati, Hossein; Saraeyan, Ahmad Reza; Dehghani Firoz Abadi, Mohammad Reza

doi:10.22092/ijwpr.2018.106563.1347

Document Type : Research Paper

Authors

¹ Candidate of Pulp and Paper Industries, Faculty of Wood and Paper Engineering, Gorgan, Iran

² Professor of pulp and Paper Technology, Faculty of Wood and Paper Engineering Sari University of Agricultural Sciences and Natural Resources, Sari, Iran

³ Associated Professor of Pulp and Paper Technology, Faculty of Wood and Paper Engineering, Gorgan, Iran

https://doi.org/10.22092/ijwpr.2018.106563.1347

Abstract

During the paper manufacturing process, especially when mechanical pulp or recycled pulp used, a large amount of soluble and colloidal substances (DCS) are comprised and dispersed or dissolved in the process water. Accumulation of DCS during the papermaking operation with the increasing closure process water systems, can have a variety of deleterious effects on papermaking process and paper products. In this study, The effect of anionic trash neutraliziation was investigated by using different catcher anionic tarsh and also pulp washing (removal of anionic trash) on the CMP pulp and paper properties. After the initial preparation chemi-mechanical pulp (CMP), bleached long fiber kraft pulp and mixing the pulps with each other, filler of precipitated calcium carbonate (PCC) was added. Then a cationic retention aid That in this research has been cationic polyacrylamide were added to the mix. To neutralization of and reduce the negative effects of anionic trash, different levels of poly DADMAC with molecular weight 100000-200000 (0.025, 0.05, 0.1, 0.15%) and poly aluminium chloride (PAC) (0.1, 0.25, 0.5%) was added before adding of retention aid. Results showed that the use of different neutralizers imprived of zeta potential and drainage time of pulp, and increase of total retention; but reduces burst index of paper that was not significant statistically. CMP pulp washing and drainage treatment caused reducing COD and on the other hand reduced the amount of anionic trash with organic origin. Washing treatment pulp improved drainage time from pulp, total retention; but reduced burst index. Based on these findings, using cationic polyelectrolyte can introduce as a good strategy to reduce the harmful effects anionic trash and more retention suspension components.

Keywords

Main Subjects

Pulp and paper

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Iranian Journal of Wood and Paper Science Research

Investigate the effect of anionic trash management through removal and neutralization of dissolved and colloidal substances (DCS) On properties of CMP pulp and paper

References

References

Volume 33, Issue 3 - Serial Number 64
September 2018
Pages 323-336

Investigate the effect of anionic trash management through removal and neutralization of dissolved and colloidal substances (DCS) On properties of CMP pulp and paper

References

References

Volume 33, Issue 3 - Serial Number 64September 2018Pages 323-336

Volume 33, Issue 3 - Serial Number 64
September 2018
Pages 323-336