Characteristics of the solid residue of the pyrolysis process of rubber waste, steam, and two-stage carbon dioxide and steam activation

About the authors:

Veronika Z. Gorina, is a postgraduate student, T. F. Gorbachev Kuzbass State Technical University, Kemerovo, Russian Federation; gorinavz@kuzstu.ru, https://orcid.org/0000-0002-0192-530X
Alexander R. Bogomolov, Doctor of Technical Sciences, Professor of the Department of Thermal Power Engineering, T. F. Gorbachev Kuzbass State Technical University, Kemerovo, Russian Federation; barom@kuzstu.ru, https://orcid.org/0000-0002-4746-0106
Nikita D. Vilisov, is an assistant at the Department of Thermal Power Engineering, T. F. Gorbachev Kuzbass State Technical University, Kemerovo, Russian Federation; vilisovnd@kuzstu.ru https://orcid.org/0000-0002-1482-1681
Konstantin Yu. Ushakov, PhD, Associate Professor of the Department of Thermal Power Engineering, T. F. Gorbachev Kuzbass State Technical University, Kemerovo, Russian Federation; ushakovkju@kuzstu.ru, https://orcid.org/0000-0001-7232-8185
Sergey S. Azikhanov, PhD, Associate Professor of the Department of Thermal Power Engineering, T. F. Gorbachev Kuzbass State Technical University, Kemerovo, Russian Federation; ass.pmahp@kuzstu.ru, https://orcid.org/0000-0002-3127-4384
Sergey A. Shevyryov, PhD, Associate Professor of the Department of Thermal Power Engineering, T. F. Gorbachev Kuzbass State Technical University, Kemerovo, Russian Federation; ssa.pmahp@kuzstu.ru, https://orcid.org/0000-0003-0951-1600

Abstract:

The article shows the results obtained during the pyrolytic processing of waste rubber products at temperatures of 550 °C and 600 °C and the maximum yield of the solid phase, respectively, 64.91 wt.% and 55.91 wt.%. Next, the solid residue was subjected to both steam activation at temperatures of 700–900 °C and two-stage activation: in a CO2 environment at temperatures of 940–980 °C, followed by steam activation at a temperature of 900 °C. The IR spectra of solid residues after steam and two-stage activation are analyzed. The results of the textural characteristics of the solid residue after a two-stage pyrolysis process at a temperature of 600 °C and steam activation at a temperature of 900 ° C were obtained: specific surface area 69.03 m2/g and adsorption by methylene blue — 101 mg/g. The solid phase after pyrolytic treatment (600 °C), carbon dioxide activation (940 °C) and steam activation (900 °C) has a specific surface area of 109.5 m2/g. The value of the adsorption capacity for methylene blue was 73.5 mg/g, for iodine — 44.4%.

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