Abstract
Abstract
A new formula for approximating the Arrhenius temperature integral for nonisothermal analysis has been developed, using the Solver algorithm. The new formula takes the form p(u)=(e−u/u2)×[(1−2/u)/(1−λ/u2)], where λ=0.33 ln(u)+4.48. Applicability of the formula has been proven by conducting thermogravimetric analysis experiments on polypropylene material. When simulated thermogravimetric analysis curves derived from the proposed approximation were compared with curves obtained from other published approximate formulae, the new approximation fit the experimental data very well. Numerical analysis was used to test accuracy of the proposed formula, and its deviation from the numerical value was compared with those of other published approximation formulae. Results show that the new formula is a suitable solution for the evaluation of kinetic parameters for nonisothermal kinetic analysis, for example, pyrolysis of polymeric wastes and biomass fuel or to produce biomass fuel. Its use will result in significant improvement in plastic resource recycling and could also be helpful in biomass energy production.
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