MECHANICAL ACTIVATION OF NAVBAHORSK BENTONITE AND ITS TEXTURAL AND ADSORPTION CHARACTERISTICS

• Main Authors: Akmalaiuly, K. (Author), Fayzullayev, N. (Author), Khamroyev, J.Kh (Author)
• Format: Article
• Language: English
• Published: National Academy of Sciences of the Republic of Kazakhstan 2022
• Subjects: adsorption activity; betonies; clay; porosity; specific surface area
• Online Access: View Fulltext in Publisher

 The article presents a method of purification of obtaining betonies clay for use in catalysis. It was found that the cleaning process includes the stages of centrifugation, drying and mechanical activation. Clay cleaning frees it from impurities and increases the proportion of the useful component-the sorption-active mineral montmorillonite. The porosity of the best method was determined (measurement of specific surface area and porosity). The accuracy and standardization of the method for determining the adsorption activity have been carried out. An exponential dependence of the adsorption activity on the weight of the sample, (1.0 g), sorption time (35 min) and the equilibrium concentration of the dye solution (39 ml 0.15%) were established. The physicochemical and textural properties of betonies clay for the use of catalysis have been studied. It was found that bentonite clay for use in catalysis is a light gray powder, odorless, practically insoluble in water and organic solvents, with a particle size of less than 0.3 mm. Control over the process of mechanical activation of bentonite in terms of “adsorption activity” was carried out using methylene blue dye. The results of the analysis of the adsorption activity of clay, obtained depending on the time of its mechanical activation. © 2022, National Academy of Sciences of the Republic of Kazakhstan. All rights reserved.