EXPANDED GRAPHITE SORBENTS FOR DISPOSAL OF OIL SPILLS ON WATER
Keywords:
expanded graphite,, graphite intercalation compounds,, sorption capacity,, oil film,, contaminated waterAbstract
Innovative thermoinitiated process in the systems «graphite – reagent – an oxidizer» – direct oxidizing conversion of graphite in TEG (thermoexpanded graphite) proceeding through a stage of formation of GIC (Graphite intercalation compound) as unstable intermediate of thermolysis reaction was found and investigated. In the process of the study of thermografenit synthesis based on natural graphite regularities of this process were established, their macrostructure was determined by the method of physical and chemical analysis. Comparative tests have shown efficiency of application of TEG receiving by the heat treatment of reagent composition «graphite – Мg(ClO4)2» have high adsorptive capacity on oil and oil products, buoyancy, low water absorption. Optimal conditions of obtaining of TEG for powder mechanical mixture of graphite with nitrate of alkaline-earth elements: magnesium, barium and zinc, as well as magnesium perchlorate were determined. The general scheme of conversion graphite in the systems «graphite – reagent – an oxidizer» describing as traditional technologically two stage process of obtaining of TEG, as well as process of direct oxidizing conversion of graphite in TEG was analysed.
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Copyright (c) 2025 С. Тұрсынбек, Г.Р. Нысанбаева, К.К. Кудaйбeргeнoв, С. Любчик, E.К. Oнгaрбaeв, З.A. Мaнcурoв
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