Authors: E.S. Ushakova, E.A. Sunchugasheva, A.G. Ushakov

Title of the article: The affect of magnetite nature on magnetic carbon sorbent obtaining process and the properties of product

Year: 2019, Issue: 2, Pages: 77-86

Branch of knowledge: 05.17.07 Chemical technology of fuel and high-energy substances

Index UDK: 504.06

DOI: 10.26730/1999-4125-2019-2-77-86

Abstract: The article reviews the actual topic of creation and study of the magnetic carbon sorbents (controlled by magnets) properties used to eliminate oil/oil products on water surfaces spills. The natural, synthetic (obtained by chemical transformations of iron compounds) and extracted from the coal ash magnetite types were considered. The characteristics of magnetite types used in production of magnetic carbon sorbents are given. As a raw material for the carbon sorbent skeleton production, the excess activated sludge of urban biological treatmentfacilities and waste from coal (coal dust) and wood processing enterprises (wood dust and sawdust) were used. The results of magnetite nature influence on the properties of the initial granules and oil sorbents obtained from them by pyrolysis, including oil capacity and moisture capacity are reduced. Conclusions about the advantages of magnetite from coal combustion ash when used in the processes of obtaining magnetic carbon sorbents are drawn: stability of characteristics and chemical heat resistance at high temperatures, no dusting. It is suggested that the investigated synthetic magnetite can be processed with hydrophobic organic substances: fat content to the touch, water impermeability, weight loss when heated to 900°C.

Key words: Magnetic carbon sorbent adsorption magnetite coal ash synthetic magnetite pyrolysis oil spills

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