Synthesis of carbon blacks and fullerenes from carbonaceous wastes by 3-phase AC thermal plasma

Abstract : In the current context of conventional fossil resource depletion, global warming and rising waste, thermal plasma appears as an interesting alternative compared to conventional thermochemical processes (combustion, gasification, pyrolysis, cracking…) in the fields of energy and nanomaterial synthesis. The particular processing conditions due to thermal plasma (i.e. high temperatures and high enthalpy densities) allow using raw materials with Low Heating Value such as organic wastes (dried sewage sludge, plastics, used tires, sawdust…) or biomass (liquid, solid or gaseous) in the fields of energy and nanomaterial synthesis. This paper reviews the last developments of a 3-phase AC plasma technology for the treatment of domiciliary and industrial wastes for nanomaterial synthesis, particularly the preliminary results reached for the production of carbon blacks and fullerenes from thermochemical processing by plasma of plastics (HDPE pellets) and carbon black soot resulting from tire pyrolysis. Carbon blacks obtained from HDPE are well organized with physical characteristics similar to acetylene black and plasma treatment of tire carbon black soot shows that it is possible to produce fullerenes with this carbon precursor and with nitrogen plasma gas at atmospheric pressure.
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Frédéric Fabry, Laurent Fulcheri. Synthesis of carbon blacks and fullerenes from carbonaceous wastes by 3-phase AC thermal plasma. 6th International Conférence on Engineering for Waste and Biomass valorisation - WasteEng2016, May 2016, Albi, France. ⟨hal-01328472⟩

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