Abstract
Mango seeds are a lignocellulosic waste produced in the agroindustry, and they are available in large quantities in tropical countries. A better alternative to employ mango residues is through pyrolysis. Most equations used in the representation of the drying stage of biomass pyrolysis are nonlinear; therefore, estimating parameters based on experimental data requires attention. In some situations, estimators (especially confidence intervals) may not be appropriate. This work presents a drying kinetics study on mango seed shells using thermogravimetric data. Some non-isothermal models were analyzed to predict the drying kinetic behavior, and some nonlinearity measures were used as a tool to correctly estimate the drying kinetic parameters. The drying behavior of this biomass was best described using the Henderson equation, which showed non-significance for bias and nonlinearity measures. Kinetic analysis of pyrolysis was performed using the Ozawa method in a wide range of conversions (0.13–0.75) in the devolatilization stage. The activation energy values found for mango seeds were within the range reported in the literature for lignocellulosic biomass.
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The authors thank to the Brazilian research funding agencies CNPq, FAPEMIG and CAPES for their financial support to this research.
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Andrade, L.A., Barrozo, M.A.S. & Vieira, L.G.M. Pyrolysis of Mango Residues: A Statistic Analysis on Nonlinear Models Used to Describe the Drying Stage. Waste Biomass Valor 10, 2335–2342 (2019). https://doi.org/10.1007/s12649-018-0243-8
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DOI: https://doi.org/10.1007/s12649-018-0243-8