Regulation of the stability of kaolin dispersion in the salt media by acrylamide copolymers
https://doi.org/10.29235/1561-8331-2020-56-1-51-57
Abstract
As a result of the study of the effect of acrylamide copolymers on the stability of the kaolin salt dispersion, it was shown that the aggregation of solid phase particles and the deposition rate of flocs increases when polymers with different adsorption activity are alternately dosed to a disperse system. The adsorption limit, adsorption capacity and adsorption constant are at maximum for alternate adsorption of anionic polyelectrolyte on a cationic polyelectrolyte layer. High adsorption capacity and interaction energy of polymers with the surface and with each other leads to an improvement in flocculation and to the increase in the deposition rate of the kaolin-salt dispersion by 1.3–1.5 times.
About the Author
E. V. Vorobieva
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Elena V. Vorobieva – D. Sc. (Chemistry), Associate Professor, Head of the Laboratory
9/1, Surganov Str., 220072, Minsk
References
1. Myaghenkov V. A., Proskurina V. E. Copolymers of acrylamide with the function of flocculants. Kazan, Kazan St. tech. university, 2011. 294 p. (in Russian).
2. Proskurina V. E., Chichkanov S. V., Myaghenkov V. A. Kinetics of titanium dioxide suspension flocculation in aqueous salt media in the presence of cationic surfactants. Journal of Water Chemistry and Technology, 2008, vol. 30, no. 2, pp. 112–120. https://doi.org/10.3103/s1063455x08020082
3. Bolto B., Gregory J. Organic polyelectrolytes in water treatment. Water research, 2007, vol. 41, pp. 2301–2324. https://doi.org/10.1016/j.watres.2007.03.012
4. Kurenkov V. F. Polyacrylamide flocculants. Sorosovskii obrazovatel’nyi zhurnal [Soros Educational Journal], 1997, no. 7, pp. 57–63 (in Russian).
5. Myaghenkov V. A., Proskurina V. E., Bulidorova G. V. Kinetic aspects of sedimentation of disperse systems in the presence of polyacrylamide flocculants. Khimiya i tekhnologiya vody = Journal of Water Chemistry and Technology, 2001, vol. 23, no. 5, pp. 453–492 (in Russian).
6. Vorob’ev P. D., Krut’ko N. P., Vorob’eva E. V., Cherednichenko D. V. Peculiarities of the formation of polyacrylamide compound-based polyelectrolyte complexes in the course of the flocculation of clay-salt dispersions. Colloid Journal, 2007, vol. 69, no. 5, pp. 552–556. https://doi.org/10.1134/s1061933x07050031
7. Vorob’ev P. D., Vorob’eva E. V., Krut’ko N. P., Shestak I. V. The effect of low molecular weight salts on the colloidal chemical properties and flocculating ability of polyacrylamide and its copolymers. Vestsi Natsyyanal’nai akademii navuk Belarusi. Seryya khimichnykh navuk = Proceedings of the National Academy of Sciences of Belarus. Chemical series, 2007, no. 3, pp. 10–14 (in Russian).
8. Malysheva J. N. Multicomponent flocculating systems based on cationic polyelectrolytes. Russian Journal of Applied Chemistry, 2009, vol. 82, no. 11, pp. 2027–2033. https://doi.org/10.1134/s1070427209110238
9. Serizava V. T., Kamimura N. S., Kawanishi N., Akashi V. M. Layer-by-layer assembly of poly(vinyl alcohol) and hydrophobic polymers based on their physical adsorption on surfaces. Langmuir, 2002, vol. 18, pp. 8381–8385. https://doi.org/10.1021/la0204491
10. Guyomard V. A., Muller G., Glinel V. K. Buildup of multilayers based on amphiphilic polyelectrolytes. Macromo¬ lecules, 2005, vol. 38, pp. 5737–5742. https://doi.org/10.1021/ma050867n
11. Holmberg K., Jönsson B., Kronberg B., Lindman B. Surfactants and polymers in aqueous solutions. Moscow, BINOM Publ., 2007. 528 p. (in Russian).
12. Osterberg M. The Effect of a Cationic Polyelectrolyte on the Forces between Two Cellulose Surfaces and between One Cellulose and One Mineral Surface. Journal of Colloid and Interface Science, 2000, no. 2, pp. 620–627. https://doi.org/10.1006/jcis.2000.7054
13. Wаgberg L., Pettersson G., Notley S. Adsorption of bilayers and multilayers of cationic and anionic co-polymers of acrylamide on silicon oxide. Journal of Colloid and Interface Science, 2004, vol. 274, no. 2, pp 480–488. https://doi.org/10.1016/j.jcis.2003.11.054
14. Vorob’eva E. V., Soldatov V. S. Adsorption of polyacrylamide and its ionic copolymers on kaolin from saline solutions. Doklady Natsional’noi akademii nauk Belarusi = Doklady of the National Academy of Sciences of Belarus, 2012, vol. 56, no. 1, pp. 93–98 (in Russian).
15. Soldatov V. S., Zelenkovskii V. M. Interionic Interactions in Carboxylic Acid Cation Exchangers on the Base of Polyacrylic Acid. Ab Initio Calculations. Solvent Extraction and Ion Exchange, 2011, vol. 29, no. № 3, pp. 458–487. https://doi.org/10.1080/07366299.2011.573450
Review
Views: 528
Email this article 