The effectiveness of air purification with the following sorbents has been studied: crushed expanded clay with granule sizes up to 2-3 mm, zeolite with granule sizes up to 1-3 mm, activated carbon with granules up to 3 mm, the natural mineral pyrolusite as a catalyst, Portland cement prepared using various methods: with the addition of a 6% solution of table salt, with soaking of granules in 26%, 31% and 36% solutions of diethanolamine. Studies have shown that the most effective (98%) use of pyrolusite granules, Portland cement granules obtained after mixing Portland cement with a 6% sodium chloride solution, soaked in 31% diethanolamine and then drying the granules at a temperature of 125 0C.

Keywords: crushed expanded clay, portland cement, purification, supply air, sulfur dioxide, carbon monoxide, formaldehyde, granules

This article is devoted to the study of the dust factor in the residential premises of a student dormitory during repair work, including the assessment of the regularities of the distribution of solid suspended particles by equivalent diameters (PM0.5, PM1, PM2.5, PM5 and PM10) and the determination of their concentrations.

Keywords: dust pollution, PM2. 5, PM10, solid suspended particles, fine dust fractions, student dormitory