Adsorption and flocculation properties of a binary system based on (co)polymers of acrylamide and low- molecular weight amine-containing surfactants in a saline medium
https://doi.org/10.29235/1561-8331-2023-59-3-193-201
Abstract
The process of flocculation of a calcium-magnesium solid phase formed in an aqueous-salt solution with the introduction of calcium-containing precipitants using polyacrylamide, cationic and anionic acrylamide copolymers was studied. With the introduction of polymers, an increase in the dispersion settling rate was observed in the concentration range of 0.5–3.0 mg/g, to a greater extent for the anionic copolymer. In the presence of an amine-containing surfactant, the sedimentation rate increased with the introduction of polymers by a factor of 1.1–1.3 compared to dispersions without surfactants. Using an anionic copolymer as an example, it was shown that the adsorption of amine and the sedimentation rate of dispersion increase with the increase of the polymer molecular weight. It was found that the concentration of the anionic copolymer and the pH of the medium also influence the adsorption of amine. Based on the obtained data, an effective method of water-salt solutions purification from amine-containing surfactants and magnesium salts (purification degree 99.5–99.8 %) that can be used at mining and processing enterprises was developed.
Keywords
purification,
flotation,
acrylamide,
alkylmorpholine,
collector,
adsorption,
precipitation,
sodium chloride,
polymer
About the Authors
S. V. Bucha
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Bucha Sviatlana V. – Researcher
9/1, Surganov Str., 220072, Minsk
A. D. Vorobiev
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Vorobiev Artem D. ‒ Ph. D. (Engineering), Leading Researcher
9/1, Surganov Str., 220072, Minsk
E. V. Laevskaya
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Layevskaya Еlena V. – Ph. D. (Engineering), Head of the Laboratory
9/1, Surganov Str., 220072, Minsk
P. D. Vorobiev
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Vorobiev Pavel D. – Ph. D. (Chemistry), Leading Researcher
9/1, Surganov Str., 220072, Minsk
N. P. Krutko
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Krutko Nikolay P. – Academician, D. Sc. (Chemistry), Professor, Director General of the State Research and Production Association «Chemical Products and Technologies»
9/1, Surganov Str., 220072, Minsk
D. V. Cherednichenko
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Сherednichenko Denis V. – Ph. D. (Chemistry), Leading Researcher
9/1, Surganov Str., 220072, Minsk
G. V. Bondareva
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Bondareva Halina V. ‒ Ph. D. (Chemistry), Scientific Secretary
9/1, Surganov Str., 220072, Minsk
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