It has been shown in thermodynamic simulations of gasification that recycling up to 25% of carbon dioxide (CO2) into a reformer allows for a highly hydrogen (H2) concentrated syngas. While understanding thermodynamic limits is imperative, a kinetic analysis is desired to confirm applicability. Studies on thermal decomposition kinetics of polyethylene terephthalate (PET) in CO2 gasification atmosphere have been assessed. Using thermal gravimetric analysis, we can show that gasification may be modeled as a series of single step reactions and determine the activation energies, pre-exponential factors and reaction models of those reactions. The use of CO2/air atmosphere instead of air atmosphere results in better char conversion.

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