Open AccessRegulation of the stability of kaolin dispersion in the salt media by acrylamide copolymers
Author(s) -
E. V. Vorobievа
Publication year - 2020
Publication title -
vescì nacyânalʹnaj akadèmìì navuk belarusì. seryâ hìmìčnyh navuk
Language(s) - English
Resource type - Journals
eISSN - 2524-2342
pISSN - 1561-8331
DOI - 10.29235/1561-8331-2020-56-1-51-57
Subject(s) - adsorption , polyelectrolyte , flocculation , dispersion (optics) , chemical engineering , cationic polymerization , copolymer , dispersion stability , polymer , salt (chemistry) , polyelectrolyte adsorption , deposition (geology) , polyacrylamide , materials science , acrylamide , chemistry , polymer chemistry , organic chemistry , paleontology , physics , optics , sediment , engineering , biology
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.