Open AccessStudy of the surface properties of glauconite
Author(s) -
Ekaterina Kuznetsova,
AUTHOR_ID
Publication year - 2021
Publication title -
trudy kolʹskogo naučnogo centra ran
Language(s) - English
Resource type - Journals
ISSN - 2307-5252
DOI - 10.37614/2307-5252.2021.2.5.029
Subject(s) - glauconite , potentiometric titration , titration , chemistry , sorption , base (topology) , equilibrium constant , inorganic chemistry , cation exchange capacity , ion exchange , adsorption , mineralogy , ion , geology , organic chemistry , soil science , mathematical analysis , mathematics , soil water
The acid-base properties of the glauconite surface has been studied by potentiometric titration. Using a surface complexation model with a constant exchange capacity, it was shown that positively charged surface centers and exchange centers dominate in the acidic pH region, and negatively charged centers dominate in the neutral and alkaline regions. The corresponding constants of acid-base equilibrium have been calculated. The data obtained were used to study the sorption of cadmium and lead on glauconite.