The sorption capacity of technical carbon obtained from the thermolysis of tires and mineral wool waste

The object of the research is solid municipal waste in the form of carbon black obtained by thermolysis at a temperature of 450° C of automobile tires and finely ground fibrous materials obtained in a vibro-centrifugal unit from waste mineral basalt wool. The purpose of this work is to study the adsorption processes of purification of aqueous solutions, taking into account the physico-chemical characteristics of adsorbents from man-made raw materials. Method. The results of the physico-chemical properties of carbon black and fibrous material, microstructural, energy dispersion and granulometric analysis are presented. The adsorption processes in aqueous solutions containing heavy metals, dyes, oil and oil have been studied. Results. Adsorption properties with respect to heavy metals of nickel ions Ni²⁺. for fibrous material, A = 46 mg/g and Cp = 3000 mg/dm³ were calculated, and for carbon black, A = 38.5 mg/g. High adsorption properties of carbon black are observed in aqueous solutions containing the dye methylene blue with a degree of purification up to 98%. It is proved that the process of dye adsorption on carbon particles is of a monomolecular nature. Carbon black has sufficient oil capacity of 13.55 kg/kg of sorbent and oil capacity of 15.33 kg/kg of sorbent. It has been established that the processes of adsorption of petroleum products from aqueous solutions are influenced by the pH of the aqueous medium, temperature, exposure time and dosage of the adsorbent. Optimal indicators of COD have been established. The efficiency of the adsorption process was evaluated using real wastewater from an existing trucking company. The degree of purification for COD was 93.5%, for suspended solids – 70%, for petroleum products – 85%.

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