About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Olga B. Barysheva, candidate of technical sciences, associate professor, Kazan State University of Architecture and Engineering, Kazan, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0002-5014-7540 Arslan M. Ziganshin, doctor of technical sciences, associate professor, Kazan State University of Architecture and Engineering, professor of the Academy of Sciences of the Republic of Tatarstan, Kazan, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0001-7335-7797 |
| Title of the article | Modeling emissions from low-temperature disposal of rubber-containing waste during construction and reconstruction of structures |
| Abstract. | Problem statement. Modern construction closely interacts with the chemical industry. As a result, there is an annual increase in construction waste, chlorine- and fluorine-containing materials, which are then converted into highly hazardous compounds of a cumulative nature and have a negative effect on the environment and humans as a whole. The cheapest and most promising method of waste disposal is pyrolysis, which can be low- and high-temperature. An experimental study of the yield of combustion products is economically unjustified, since the composition of the waste is constantly changing, and research using numerical methods is a promising area of research regardless of changes in the composition. The purpose of the work is to predict the composition of the decomposition products of low-temperature pyrolysis in order to identify toxic compounds. The objectives of the study are to find the composition of the decomposition products of construction waste by low-temperature pyrolysis in specialized furnaces using numerical methods and to obtain data necessary for analyzing the toxicity of components, as well as for studying the possibility of their secondary use. Results. A diagram of the low-temperature pyrolysis process in a specialized furnace is given. The mole fractions of the products of decomposition by low-temperature pyrolysis of butadiene, isoprene, chloroprene rubber and fluororubber were obtained. Toxic compounds produced using this method of disposal were identified - carbonyl fluoride F2CO, hydrogen fluoride HF and hydrochloric acid HCl. Conclusions. It has been shown that the products of construction waste disposal can vary across the entire range of hazard classes of substances (I - IV) depending on the specifics of the building construction processes. Highly toxic compounds were obtained at the output of low-temperature pyrolysis decomposition of construction waste - carbonyl fluoride F2CO, hydrogen fluoride HF, hydrochloric acid HCl. Methane CH4 and carbon C obtained in the calculations can be selected for secondary use. |
| Keywords. | pyrolysis, construction waste, decomposition, dioxin precursors, toxic substances |
| For citations: | Barysheva O.B., Ziganshin А.М. Modeling emissions from low-temperature disposal of rubber-containing waste during construction and reconstruction of structures // News of KSUAE, 2025, № 3 (73), p. 81-102, DOI: 10.48612/NewsKSUAE/73.8, EDN: IYNMKT |
