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

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.

Exploring the Potential of Biomass Pyrolysis for Renewable and Sustainable Energy Production: A Comparative Study of Corn Cob, Vine Rod, and Sunflower

“…The sunflower in the current work produced higher biochar yield and lower pyrolysis conversion rates compared to sunflower bagasse [43] and sunflower stalks [44], which were reported at 28% char yield at 520 • C, and 25% char yield at 540 • C, respectively. Vine rod in the current work showed higher char production rates at 500 • C compared to the work by Suárez et al [45] who produced 35% biochar rates at the same temperature, which significantly reduced to 20% when the biomass was leached with distilled water before pyrolysis.…”

Synthesis, curing, and degradation kinetics of polyurethanes based on poly(ethylene glycol), isosorbide, and pentamethylene diisocyanate

“…The second and third stages, 23.86% and 44.00% of weight loss, respectively, are associated with the decomposition of the polyol stable segments 18,44,56 . The fourth stage corresponds to 11.36% of weight loss and it is related to the decomposition of residues into volatile compounds, occurring after 500°C 44,57 . In general, ISO addition increased the thermal stability, and the compound with 30% ISO presents the highest initial degradation temperature.…”

“…and it is related to the decomposition of residues into volatile compounds, occurring after 500 C. 44,57 In general, ISO addition increased the thermal stability, and the compound with 30% ISO presents the highest initial degradation temperature.…”

Kinetics and Thermodynamic Analysis of Recent and Ancient Buried Phoebe zhennan Wood

“…As one of the most common techniques, thermogravimetric analysis (TGA) is usually used for biomass pyrolysis analysis. − Numerous works on kinetic studies of wood have been reported in literature studies. ,− Various isoconversional methods such as Kissinger, Kissinger–Akahira–Sunose, Flynn–Wall–Ozawa (FWO), , Starink, and Friedman methods ,, were used to calculate the kinetic parameters, while the Criado method, the Avrami equation, , and the Coats–Redfern (CR) method were used to predict the reaction mechanism. It was found that the main mechanisms of wood were three-dimensional diffusion, random nucleation with one nucleus mechanisms, and reaction order (2nd to 3rd) …”