EVALUATION OF THE EFFICIENCY AND USE OF A COMPLEX FROM NATURAL MINERAL SORBENTS
Turlybekova M. Seitova G. Bilisbekkyzy E. Tokanbayev A. Kaldybayeva S.
2023National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2023#6Issue 462208 - 217 pp.
In the article the authors tried to create an effective technology for obtaining a complex from natural adsorbents based on bentonite clay and zeolite, which allows to achieve high degree of purification from drinking and waste water pollution. Mechanism of thermal activation was used in order to increase the adsorption capacity of sorbents during heat treatment, which is due to removal of adsorbed and constitutional water, that is, an increase in total porosity. Close to thermal activation is the method of hydrothermal modification of natural sorbents, it is treatment in water vapor at high temperatures and pressure. Dissolution of small particles of a substance and their precipitation on the surface of larger ones occur in hydrothermal treatment, which causes change in the specific surface area and increase of the sorption volume of pores. Since the composition of natural adsorbents includes metal hydroxides, which undergo various phase transitions during hydrothermal treatment often leading to amorphization of the mineral structure, which is accompanied by increase of their activity. The equilibrium adsorption capacity of water of natural bentonite clay and zeolite was experimentally found out at various zeolite temperatures and water vapor pressures for use in an adsorption system. The adsorption equilibrium model corresponds to the experimental data with a permissible margin of error. Separate correlations were obtained for adsorption and desorption processes, as well as one correlation for modeling both processes. The isothermal heat of water adsorption on bentonite clay and zeolite was calculated depending on the adsorption capacity. During the experiments, the quality of water was improved, in accordance with the sanitary and hygienic standardized requirements that meet human safety criteria.
adsorbents , bentonite clay , dispersed impurities , purification , zeolite
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Zhetysu State University named after I. Zhansugurov, Taldykorgan, Kazakhstan
Al-Farabi Kazakh National University, Almaty, Kazakhstan
Zhetysu State University named after I. Zhansugurov
Al-Farabi Kazakh National University
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026