Research of Porization and Adsorptions in High-Porous Adsorptive Layers of Vermiculite

Abstract

Adsorption capacity of the adsorbent is dependent on the concentration of the substance in the liquid or vapor phase, its partial pressure, temperature, and the initial state of the adsorbent. At the swelling a cellular porous structure is formed, total porosity that connects with the entered number and the content of the gaseous component masses. The rheological characteristics of porous masses have the decisive effect on the porous structure. Common state for all versions of swelling is a plastic-viscous porous mass condition during their porization. The interlayer structure and inter-packet intervals may be considered as vermiculite plate micropores with dimensions of 0.3 -1.2 nm. Vermiculite cation exchange capacity is in the range of 100-150 mEq / 100 g, i.e. from clay minerals it is one of the most interchangeable. The research results of the internal structure of adsorption layers by the adsorption isotherms means indicative of the internal surface of the porous layer is characterized by an extremely complex and developed form and can be described by means of fractal geometry. A model of the geometric structure of mica materials formed in the process of blistering during heat treatment is developed. The presented model has sufficiently general form and can be used both in the organization of systematic experimental studies of porization and adsorption in the adsorption layers of highly porous, and for the porization vermiculite optimization.

Design swelling micas: Insights on heavy metals cation exchange reaction

“…The adsorption capacity of the natural clay minerals is quite limited (Syrmanova et al, 2016), thus, many studies have been devoted to enhance their metal uptake (Jimenez-Castaneda and Medina, 2017;O'Connell et al, 2008;Srinivasan, 2011). In his sense, Alba et al (Alba et al, 2006) have synthetized a new family of the swelling high charged fluorophlogopite, with layer charge in the range of the brittle micas (Pavon et al, 2014) but unlike the natural micas, they exhibit swelling properties and cation exchange capacity (Pavon et al, 2013).…”

Manufacturing industry potential of the Kyrgyz Republic in Eurasian economic integration

“…Thus, the focus should be on the development of industries beyond their current core sectors; the research has described those areas that are particularly important for policymakers to pay attention to. Particular attention should be paid to sectors related to high-tech technologies, such as pharmaceuticals and mechanical engineering [92][93][94][95]. Furthermore, providing assistance to small and medium-sized firms and creating a conducive climate for their functioning can serve as a potent component of national strategy.…”