Bubble-particle attachment behavior in flotation process of plastics

doi:10.7523/j.issn.2095-6134.2016.02.022

Abstract

Abstract:

To examine the bubble attachment behavior in flotation process of plastics, the high-speed photographic method, combined with a simple attachment time model, was employed in the experiments carried out in a laboratory-scale flotation column. Effects of the plastic material and the type and concentration of surfactant were analyzed in detail. Results show that the maximum rebound distance and attachment time decrease with surfactant concentration. The type of surfactant and plastic material influence bubble attachment behavior, and the reductions of the bubble size and the solution tension and contact angle are the deep incentives.

Key words: surfactant, plastic flotation, bubble, attachment behavior, high-speed photography

CLC Number:

X705

ZHAO Yue, HUANG Jia, ZHANG Haifeng, LI Yanpeng. Bubble-particle attachment behavior in flotation process of plastics[J]. , 2016, 33(2): 283-288.

References

[1] 钟晓萍,许江菱,殷荣忠,等. 2009-2010年世界塑料工业进展[J]. 塑料工业, 2011, 39(3):1-42.
[2] Nesset J E, Hernandez-Aguilar J R, Acuna C A, et al. Some gas dispersion characteristics of mechanical flotation machines[J]. Minerals Engineering, 2006, 19:807-815.
[3] Firouzi M, Nguyen A V, Hashemabadi S H, et al. The effect of microhydrodynamics on bubble-particle collision interaction[J]. Minerals Engineering, 2011, 24:973-986.
[4] Painmanakul P, Sastaravet P, Lersjintanakarn S, et al. Effect of bubble hydrodynamic and chemical dosage on treatment of oil wastewater by induced air flotation(IAF) process[J]. Chemical Engineering Research and Design, 2010, 88:693-702.
[5] Lu K, Zhang X L, Zhao Y L, et al. Removal of color from textile wastewater by foam separation[J]. Journal of Hazardous Materials, 2010, 182:928-932.
[6] 朱步瑶, 赵振国. 界面化学基础[M]. 北京: 化学工业出版社, 1996.
[7] Griffin W C. Calculation of HLB values of non-ionic surfactants[J]. Journal of Society of Cosmetic Chemists, 1954, 5:249-256.
[8] 刘艳艳, 李彦鹏, 朱婷婷. 表面活性剂对中尺度气泡形状及速度的调控研究[J]. 西安交通大学学报:自然科学版, 2011, 45(10):94-97.
[9] Li Y P, Yang L W, Zhu T T, et al. Biosurfactants as alternatives to chemosynthetic surfactants in controlling bubble behavior in the flotation process[J]. Journal of Surfactants and Detergents, 2013, 16:409-419.
[10] Li Y P, Zhu T T, Liu Y Y, et al. Effects of surfactant on bubble hydrodynamic behavior under flotation-related conditions in wastewater[J]. Water Science & Technology, 2012, 65(6):1 060-1 066.
[11] Basa? ová P, Machoň V, Hubic ? ka M, et al. Collision processes involving a single rising bubble and a larger stationary spherical particle[J]. International Journal of Mineral Processing, 2010, 94:58-66.
[12] Seyyed N A, Xu Z, Masliyah J. Measurement of sliding velocity of a single micro bubble under an inclined collector surface[J]. Canadian Journal of Chemical Engineering, 2008, 86(6):1 001-1 010.
[13] Albijanic B, Ozdemir O, Nguyen A V, et al. A review of induction and attachment times of wetting thin films between air bubbles and particles and its relevance in the separation of particles by flotation[J]. Advances in Colloid and Interface Science, 2010, 159:1-21.
[14] Krasowska M, Zawala J, Malysa K. Air at hydrophobic surfaces and kinetics of three phase contact formation[J]. Advances in Colloid and Interface Science, 2009, 147/148:155-169.
[15] Kracht W, Finch J A. Effect of frother on initial bubble shape and velocity[J]. International Journal of Mineral Processing, 2010, 94:115-120.