Texture and Sorption Characteristics of Modified Bentonite Made by Ash-Gel and Together Equipment

Abstract

The paper presents the results of the study of the texture and sorption characteristics of the sorbent based on the Bentonite clay of the Navbachorsky field, modified by aluminum and iron.  It is shown that almost all textural and adsorption characteristics of BG as a result of modification improved markedly.  The specific surface area of ​​the original BG obtained by the BET method (Brunauer, Emmeta, Teller. It is established that the sorption process of bichromate ions is described by the monomolecular theory of lungmuir, which is characterized by the presence of active centers on the sorbent surface.

The relevance of the development is determined by the increasing interest in creating new environmentally friendly sorbents of natural aluminosilicates.  However, a deterrent to the wide use of bentonites for gas purification is the lack of effective granulation technologies, since clay minerals are subject to gas and aqueous media dispersion effect.  Methods and materials: To substantiate the possibility of using the developed technology of the granule-laying of bentonite, as well as the obtained sample samples in the water treatment process, the granules have studied the mineralogical composition by the method of x-ray phase analysis, analyzed the specific surface, porosity (pore volume, pore distribution by radius) by the method  Sorption and capillary condensation of gases, their chemical and mechanical resistance are determined.  After the study of physical properties, the sorption capacity of the samples against non-ferrous and muddy solutions was evaluated.

Results: Detailed analysis of the physical and chemical properties of the developed sorbents showed that the developed sorbents comply with the requirements of GOST and are effective for use, both as an independent filtering material and component in water purification systems.