Modified sorbents based on diatomites

Abstract

Introduction: the quality of the air environment in the premises depends mainly on the presence of toxic chemical substances in it. An urgent task is the development and application of new efficient building materials using aggregates with high sorption capacity. The paper presents the results of a study of the influence of a low-temperature nonequilibrium plasma on the sorption characteristics of diatomite-based aggregates.
 Materials and methods: the diatomites of the Irbit deposit, quartz sand were chosen as the materials under study. The study of the effect of low-temperature plasma on the change in the characteristics of modified diatomites was performed using the Raman spectrometer Senterra. The change in the sorption characteristics of diatomites was determined by the gravimetric method.
 Results: plasma-modified prototypes of a diatomite-based sorbent, with higher sorption characteristics than the initial ones, were obtained. Analysis of the results obtained by the method of Raman scattering confirmed the structural change on the surface of plasma-modified samples with the formation of additional active centers and radicals.
 Conclusions: modified sorbents are able to provide more efficient absorption of toxic substances in comparison with the control samples. After additional technological research, they can be recommended for introduction into the production of building materials with additional properties to ensure the regulatory requirements for the quality of the air environment in the premises.