A new method of studying the fundamental mechanisms involved in pigment liberation from recycle papers
Source abstract
Abstract
Deinking flotation is the most efficient and widely used method of removing ink particles from printed papers to improve the recyclability. A prerequisite for successful deinking flotation is detachment of pigments from paper fibers, a subprocess known as liberation. The degree of liberation is usually determined via hyperwashing tests, which are costly and time consuming. Furthermore, they provide no information on the fundamental mechanisms controlling liberation. In the present work, we developed a new method in which potentials of the particles in a pulp are measured and analyzed. If pigments are not liberated from paper fibers, a frequency distribution plot gives a single peak, while two peaks appear when they are liberated. One can readily determine the degrees of liberation from the peak positions and peak heights. In addition, the potential data can be used to construct disjoining pressure isotherms using the DLVO theory that are useful to better understand the fundamental mechanisms involved and the roles of different reagents used to improve pigment liberation.
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Research context
OpenAlex topics: Electrostatics and Colloid Interactions · Minerals Flotation and Separation Techniques · Microfluidic and Bio-sensing Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (21)
Show source-provided references
1. LeBlanc, R., "Paper recycling facts, figures, and information sourc-es,” liveabout.com, Dotdash Meredith, New York, 29 July 2018. https://www.liveabout.com/paper-recycling-facts-figures-and-information-sources-2877868.
2. Ng, H.T., Bhattacharyya, M.K., Mittelstadt, L.S., et al., “Deinking of HP digital commercial prints: Effect of chemicals and their loadings on deinkability,” NIP & Digital Fabrication Conf. (Vol. 2009, No. 1, pp. 173-176), Society for Imaging Science and Technology, Springfield, VA, USA, 2009.10.2352/j.imagingsci.technol.12.56.6.060503 ↗
3. Bajpai, P., Recycling and Deinking of Recovered Paper, Elsevier, Amsterdam, 2013.
4. Liu, J., Vandenberghe, J., Masliyah, J., et al., Miner. Eng. 20(6): 566(2007). https://doi.org/10.1016/j.mineng.2006.11.005.10.1016/j.mineng.2006.11.005 ↗
5. Zhao, Y., Deng, Y., and Zhu, J.Y., Prog. Pap. Recycl. 14(1): 41(2004).10.1080/10020070412331343601 ↗
6. Marchildon, L., Lapointe, M., and Chabot, B., Pulp Pap. Can. 90(4): 90(1989).10.3183/npprj-1989-04-02-p090-093 ↗
7. Julien Saint Amand, F. and Perrin, B., Pulp Pap. Can. 94(10): T284(1993).
8. Xu, Z., Liu, J., Choung, J.W., et al., Int. J. Miner. Process. 68(1-4): 183(2003). https://doi.org/10.1016/S0301-7516(02)00043-1.10.1016/S0301-7516(02)00043-1 ↗
9. Liu, J., Xu, Z., and Masliyah, J., J. Colloid Interface Sci. 287(2): 507(2005). https://doi.org/10.1016/j.jcis.2005.02.037.10.1016/j.jcis.2005.02.037 ↗
10. Wu, C., Wang, L., Harbottle, D., et al., J. Colloid Interface Sci. 449: 399(2015). https://doi.org/10.1016/j.jcis.2015.01.040.10.1016/j.jcis.2015.01.040 ↗
11. Derjaguin, B.V. and Landau, L., Acta Physicochim: URSS 14:633(1941).
12. Verwey, E.J.W. and Overbeek, J.Th.G., Theory of the Stability of Lyophobic Colloids, Elsevier, Amsterdam, 1948.
13. Israelachvili, J.N., Intermolecular and Surface Forces, Academic Press, Cambridge, MA, USA, 2011.
14. Bergström, L., Stemme, S., Dahlfors, T., et al., Cellulose 6(1): 1(1999). https://doi.org/10.1023/A:1009250111253.10.1023/A:1009250111253 ↗
15. Hartley, P.A., Parfitt, G.D., and Pollack, L.B., Powder Technol. 42(1): 35(1985). https://doi.org/10.1016/0032-5910(85)80036-X.10.1016/0032-5910(85)80036-X ↗
16. Hogg, R., Healy, T., and Fuerstenau, D.W., Trans. Faraday Soc. 62: 1638(1966). https://doi.org/10.1039/tf9666201638.10.1039/tf9666201638 ↗
17. Mak, N. and Steven, J., “Characteristics of fatty acids as an effec-tive flotation de-inking collector,” Res. Forum Recycl., 2nd, TAPPI Press, Atlanta, 1993, p. 145.
18. Mathur, I., “Preferred method for removal of filler from deinked pulp,” Recycl. Symp., TAPPI Press, Atlanta, 1994, p. 53.
19. Mahagaonkar, M., Banham, P., and Stack, K.R., Prog. Pap. Recycl. 6(2): 50(1997).
20. Ferguson, L.D., Tappi J. 75(7): 75(1992).10.2307/3496123 ↗
21. Ferguson, L.D., Tappi J. 75(8): 49(1992).10.2307/3496123 ↗