Parametrization of a Modified Friedman Kinetic Method to Assess Vine Wood Pyrolysis Using Thermogravimetric Analysis

Sergio Suárez, Jose Guillermo Rosas, Marta Elena Sánchez, Roberto López, Natalia Gómez and Jorge Cara-Jiménez
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Sergio Suárez: Department Area of Chemical Engineering, Institute of Natural Resources, Universidad de León, 24071 León, Spain
Jose Guillermo Rosas: Department Area of Chemical Engineering, Institute of Natural Resources, Universidad de León, 24071 León, Spain
Marta Elena Sánchez: Department Area of Chemical Engineering, Institute of Natural Resources, Universidad de León, 24071 León, Spain
Roberto López: Department Area of Physical Chemistry, Chemical and Physics Department, Universidad de León, 24071 León, Spain
Natalia Gómez: Department Area of Chemical Engineering, Institute of Natural Resources, Universidad de León, 24071 León, Spain
Jorge Cara-Jiménez: Department Area of Chemical Engineering, Institute of Natural Resources, Universidad de León, 24071 León, Spain

Energies, 2019, vol. 12, issue 13, 1-14

Abstract: Common kinetic parameters were obtained for leached and non-leached samples of vine wood biomass. Both samples were considered to have different proportions of cellulose, hemicellulose, and lignin compositions as a result of the leaching process. The two samples were analyzed in terms of pyrolysis kinetic parameters using non-isothermal thermogravimetric analysis. Furthermore, the classic Friedman isoconversional method, a deconvolution procedure using the Fraser–Suzuki function, and a modified Friedman method from a previous study on the delay in conversion degree were satisfactorily applied. The observed difference when the deconvolution technique was applied suggests that the classic Friedman method is not adequate for studying the pyrolysis of individual vine wood biomass components. However, this issue was solved by studying the delay in conversion degree of both biomasses and calculating the kinetic parameters using the resulting information. This procedure was found to be useful for studying and comparing the kinetics of heterogeneous biomasses and has a sound scientific explanation, making this research a basis for future similar studies.

Keywords: biomass; thermogravimetric analysis; kinetic; simulation; isoconversional method; Fraser–Suzuki function (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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