Related Links
The effect of kappa factor changes in chlorine dioxide bleaching on the dissolution of pulp from OCC recycled fibers in sodium hydroxide / urea solvent | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| Article 7, Volume 37, Issue 2 - Serial Number 79, May 2022, Pages 166-176 PDF (835.45 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/ijwpr.2021.354339.1677 | ||
| Authors | ||
| Negin Ghahrani1; Noradin Nazarnezhad* 2; Omid Ramezani3; Ghasem Asadpour4 | ||
| 1Ph.D. Student of pulp and paper Industry, Agricultural Sciences and Natural Resources of Sari University. Iran | ||
| 2Associate Professor, Department of Wood and Cellulose products. Faculty of Natural Resources, Sari University of Agricultural Sciences and Natural Resources, Iran | ||
| 3Assistant Professor, Faculty of New Technologies and Aerospace Engineering of shahid Beheshti University, Iran | ||
| 4Associate Professor, Department of Wood and Cellulose products. Faculty of Natural Resources, Sari University of Agricultural Sciences and Natural Resources, Iran | ||
| Abstract | ||
| Regeneration of cellulose by direct solvent dissolution essentially involves the pretreatment of cellulose with a solvent for swelling the cellulose chains and weakening the cellulose molecules bonds. Aqueous solutions based on sodium hydroxide (NaOH) are low cost, non-volatile, non-toxic, environmentally friendly cellulosic solvent with fast dissolution power at low temperatures. The mechanism of cellulose dissolution in this solvent is not yet fully understood because there are parameters such as temperature, crystallization and degree of cellulose polymerization that affect the solubility of cellulose in the NaOH / urea system. Therefore, this study investigated the effect of kappa factor changes in chlorine dioxide bleaching on the dissolution of OCC recycled pulp on chemical compounds (lignin and hemicellulose) and the degree of polymerization. The results showed that with further reduction of lignin, the dissolution of pulp decreases and this reduction in dissolution is more severe in lignin levels below 3% (reduction from 44% to about 37% dissolution). It seems that during the bleaching process and part of lignin and hemicellulose removal, a part of cellulose with low degree of polymerization is also removed and the average polymerization of the remaining cellulose increases which is more resistant to the phenomenon of pulp dissolution. With increasing kappa factor (to 0.2 and 0.3), there was no significant change in dissolution and hemicellulose. In general, it seems that lignin and the degree of polymerization are not only the effective factors in OCC pulp dissolving and hemicellulose content also can be effective. | ||
| Keywords | ||
| Solution; kappa factor; bleaching; recycled fiber; degree of polymerization | ||
| References | ||
|
-Appaw C., 2004. Rheology and microstructure of cellulose acetate in mixed solvent system, north carolina state university in partial fulfillment of the requirement for degree of doctor of philosophy.14-16 p
-Budtova, T. and Navard, P., 2016. Cellulose in NaOH–water based solvents: a review. Cellulose, 23(1), 5-55.
-Faezipour, M., Khalafi, A., Mirshokraie, S.A., Lohrasebi, A. and Pirjani, A., 2006. A Study of the Possibility of Aquasol Process to Deink ONP and MOW. Iranian J. Natural Res., 59(2): 457-470.
-Ghahramani, N., ramezani, O., kermanian, H., vatankhah, E. and kousha, M., 2018. Acidic prehydrolysis role in dissolving pulp production from OCC. Iranian Journal of Wood and Paper Industries, 9(3), 441-457.
-Hämmerle, FM., 2011. The cellulose gap (the future of cellulose fibres). Lenzinger Ber 2011; 89: 12–21.
-Hildebrandt, N.C., Piltonen, P., Valkama, J.P. and Illikainen, M., 2017. Self-reinforcing composites from commercial chemical pulps via partial dissolution with NaOH/urea. Industrial Crops and Products, 109, 79-84.
-Hubbe, M., Venditti, R. and Rojas, O., 2007. What happens to cellulosic fiber during papermaking andrecycling? BioResources, 2(4):739-788
-Hummel, M., Michud, A., Tanttu, M., Asaadi, S., Ma, Y., Hauru, L. K. and Sixta, H., 2015. Ionic liquids for the production of man-made cellulosic fibers: Opportunities and challenges. In Cellulose chemistry and properties: Fibers, nanocelluloses and advanced materials (pp. 133-168). Springer, Cham.
-Jiang Z., Fang Y., Xiang J., Ma Y., Lu A., Kang H., Huang Y., Guo H., Liu R. and Zhang L., 2014. Intermolecular Interactions and 3D Structure in Cellulose–NaOH–Urea Aqueous System. The Journal of Physical Chemistry B, 118(34), 10250-10257.
-Korhonen, O., Sawada, D. and Budtova, T., 2019. All-cellulose composites via short-fiber dispersion approach using NaOH–water solvent. Cellulose, 26(8), 4881-4893.
-Min, B.C., Bhayani, B.V., Jampana, V.S. and Ramarao, B.V., 2015. Enhancement of the enzymatic hydrolysis of fines from recycled paper mill waste rejects. Bioresources and Bioprocessing, 2(1), 40.
-Resalati, H., Kajforush, S., Ghasemian, A. and Saraeyan, A., 2012. The effect of chlorine dioxide charges in chlorine dioxide-alkaline extraction-chlorine dioxide (DED) sequence on optical properties of kraft pulp of Eucalyptus camaldulensis. Journal of Environmental Science and Engineering. A, 1(2A).
-Sayyed, A.J., Mohite, L.V., Deshmukh, N.A. and Pinjari, D.V., 2019. Structural characterization of cellulose pulp in aqueous NMMO solution under the process conditions of lyocell slurry. Carbohydrate polymers, 206, 220-228.
-Sescousse, R. and Budtova, T., 2009. Influence of processing parameters on regeneration kinetics and morphology of porous cellulose from cellulose–NaOH–water solutions. Cellulose, 16(3), 417-426.
-Sixta H., 2006. Handbook of pulp. Weinheim: Wiley- VCH Verlag GmbH & Co. KGaA, 1022–67.
-Shi, Z., Yang, Q., Cai, J., Kuga, S. and Matsumoto, Y., 2014. Effects of lignin and hemicellulose contents on dissolution of wood pulp in aqueous NaOH/urea solution. Cellulose, 21(3), 1205-1215.
-Wei, Q.Y., Lin, H., Yang, B., Li, L., Zhang, L.Q., Huang, H.D. and Li, Z.M., 2020. Structure and Properties of All-Cellulose Composites Prepared by Controlling the Dissolution Temperature of NaOH/Urea Solvent. Industrial & Engineering Chemistry Research.
-Xiong, B., Zhao, P., Hu, K., Zhang, L. and Cheng, G., 2014. Dissolution of cellulose in aqueous NaOH/urea solution: role of urea. Cellulose, 21(3), 1183-1192.
-Yang, Y., Zhang, Y., Dawelbeit, A., Deng, Y., Lang, Y. and Yu, M., 2017. Structure and properties of regenerated cellulose fibers from aqueous NaOH/thiourea/urea solution. Cellulose, 24(10), 4123-4137.
-Zhang, L., Ruan, D. and Gao, S., 2002. Dissolution and regeneration of cellulose in NaOH/thiourea aqueous solution. Journal of Polymer Science Part B: Polymer Physics, 40(14), 1521-1529.
-Zhu, R., Liu, X., Song, P., Wang, M., Xu, F., Jiang, Y. and Zhang, X., 2018. An approach for reinforcement of paper with high strength and barrier properties via coating regenerated cellulose. Carbohydrate polymers, 200, 100-105. | ||
|
Statistics Article View: 1,632 PDF Download: 300 |
||
Journal management system. designed by sinaweb