Supplementary materials

Comparative investigation for the determination of kinetic parameters for biomass pyrolysis by thermogravimetric analysis

Lokmane Abdelouahed a,*, Sébastien Leveneur a,b, Lamiae Vernieres-Hassimi a, Laurent Balland a

Bechara Taouk a.

a Normandie Univ, INSA Rouen, UNIROUEN, LSPC, 76000 Rouen, France

b Laboratory of Industrial Chemistry and Reaction Engineering, Process Chemistry Centre, Åbo Akademi University, Biskopsgatan 8, FI-20500 Åbo/Turku, Finland

*

Figure S.1 gives the linear regression according to KAS and Friedman methods for pure pseudo-components.

Fig. S.1: Linear regression according to KAS method (left) for a) cellulose, b) hemicellulose and c) lignin and according to Friedman method (right) for d) cellulose, e) hemicellulose and f) lignin.

Table S.1 shows all kinetic parameters and correlation coefficient for all isoconventional method (KAS, Friedman and OFW). OFW results are shown only in Supplementary materials.

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Table S.1: Kinetics parameters of cellulose, hemicellulose, lignin, flax shives and beechwood with KAS and OFW methods.

Cellulose / Hemicellulose / Lignin / Flax shives / Beechwood
OFW / KAS / OFW / KAS / OFW / KAS / OFW / KAS / OFW / KAS
α (%) / Ea/kJ mol-1 / logA/s-1 / R² / Ea/kJmol-1 / logA/s-1 / R² / Ea/kJmol-1 / logA/s-1 / R² / Ea/kJmol-1 / logA/s-1 / R² / Ea/kJmol-1 / logA/s-1 / R² / Ea/kJmol-1 / logA/s-1 / R² / Ea/kJmol-1 / logA/s-1 / R² / Ea/kJmol-1 / logA/s-1 / R² / Ea/kJmol-1 / logA/s-1 / R² / Ea/kJmol-1 / logA/s-1 / R²
10 / 202.77 / 14.04 / 0.998 / 203.72 / 14.04 / 0.998 / 114.13 / 8.80 / 0.986 / 111.51 / 8.82 / 0.983 / 191.13 / 18.46 / 0.967 / 192.41 / 18.46 / 0.964 / 177.87 / 13.50 / 0.990 / 172.61 / 13.49 / 0.989 / 160.54 / 11.73 / 0.999 / 159.78 / 11.73 / 0.999
20 / 199.68 / 14.03 / 0.997 / 200.30 / 14.04 / 0.997 / 116.54 / 8.80 / 0.979 / 113.75 / 8.83 / 0.975 / 218.77 / 18.52 / 0.979 / 221.02 / 18.52 / 0.977 / 181.93 / 13.51 / 0.995 / 178.27 / 13.50 / 0.995 / 166.06 / 11.75 / 1.000 / 165.27 / 11.75 / 0.999
30 / 197.29 / 14.03 / 0.997 / 197.69 / 14.03 / 0.996 / 130.13 / 8.81 / 0.972 / 127.76 / 8.88 / 0.967 / 227.40 / 18.53 / 0.986 / 229.79 / 18.54 / 0.985 / 190.32 / 13.53 / 0.996 / 186.89 / 13.52 / 0.995 / 175.57 / 11.77 / 0.999 / 175.01 / 11.77 / 0.999
40 / 198.97 / 14.03 / 0.997 / 199.38 / 14.03 / 0.997 / 138.01 / 8.84 / 0.982 / 135.85 / 8.90 / 0.979 / 227.11 / 18.53 / 0.993 / 229.24 / 18.54 / 0.992 / 194.14 / 13.54 / 0.997 / 190.99 / 13.53 / 0.997 / 179.08 / 11.78 / 1.000 / 178.46 / 11.78 / 0.999
50 / 195.11 / 14.02 / 0.997 / 195.26 / 14.02 / 0.996 / 143.50 / 8.90 / 0.977 / 141.47 / 8.92 / 0.973 / 229.35 / 18.54 / 0.997 / 231.35 / 18.54 / 0.996 / 191.05 / 13.53 / 0.997 / 187.96 / 13.53 / 0.997 / 179.40 / 11.78 / 1.000 / 178.62 / 11.78 / 0.999
60 / 196.72 / 14.03 / 0.996 / 196.90 / 14.03 / 0.996 / 147.17 / 8.99 / 0.962 / 145.18 / 8.93 / 0.956 / 233.77 / 18.54 / 0.994 / 235.73 / 18.55 / 0.993 / 189.29 / 13.53 / 0.999 / 186.28 / 13.52 / 0.998 / 179.30 / 11.78 / 1.000 / 178.37 / 11.78 / 1.000
70 / 199.40 / 14.03 / 0.996 / 199.65 / 14.03 / 0.995 / 252.00 / 9.15 / 0.960 / 246.00 / 9.16 / 0.947 / 260.28 / 18.59 / 0.987 / 263.27 / 18.60 / 0.986 / 184.65 / 13.52 / 0.999 / 182.50 / 13.51 / 0.999 / 178.33 / 11.78 / 1.000 / 177.22 / 11.78 / 1.000
80 / 200.09 / 14.04 / 0.995 / 200.32 / 14.04 / 0.995 / 324.00 / 9.50 / 0.963 / 312.00 / 9.26 / 0.963 / 345.79 / 18.71 / 0.984 / 352.75 / 18.72 / 0.983 / 193.69 / 13.54 / 0.999 / 190.90 / 13.53 / 0.999 / 177.93 / 11.78 / 0.999 / 176.68 / 11.78 / 0.999
90 / 206.04 / 14.05 / 0.995 / 206.48 / 14.05 / 0.994 / 361.00 / 9.67 / 0.928 / 348.00 / 9.31 / 0.849 / 510.13 / 18.88 / 0.982 / 524.88 / 18.90 / 0.981 / 343.36 / 13.79 / 0.926 / 324.46 / 13.76 / 0.922 / 250.19 / 11.93 / 0.953 / 252.36 / 11.93 / 0.949

Table S.2: Kinetics parameters of cellulose, hemicellulose, lignin, flax shives and beechwood with Friedman method.

Cellulose / Hemicellulose / Lignin / Flax shives / Beechwood
α (%) / Ea/kJmol-1 / logA/s-1 / R² / Ea/kJmol-1 / logA/s-1 / R² / Ea/kJmol-1 / logA/s-1 / R² / Ea/kJmol-1 / logA/s-1 / R² / Ea/kJmol-1 / logA/s-1 / R²
10 / 199.79 / 17.15 / 0.995 / 107.55 / 22.86 / 0.982 / 199.79 / 17.85 / 0.995 / 162.20 / 14.47 / 0.980 / 163.92 / 14.39 / 0.969
20 / 192.37 / 16.55 / 0.993 / 118.82 / 24.72 / 0.985 / 192.37 / 18.31 / 0.993 / 189.68 / 16.56 / 0.959 / 170.30 / 14.58 / 0.999
30 / 190.33 / 16.41 / 0.992 / 138.15 / 28.43 / 0.988 / 190.33 / 21.35 / 0.992 / 203.53 / 17.41 / 0.966 / 181.99 / 15.31 / 0.999
40 / 194.67 / 16.82 / 0.993 / 139.11 / 28.55 / 0.987 / 194.67 / 19.53 / 0.993 / 202.00 / 16.96 / 0.988 / 179.32 / 14.83 / 1.000
50 / 194.40 / 16.81 / 0.988 / 145.32 / 29.76 / 0.979 / 194.40 / 19.53 / 0.988 / 185.30 / 15.35 / 0.995 / 175.54 / 14.41 / 1.000
60 / 206.00 / 17.82 / 0.981 / 151.90 / 30.75 / 0.923 / 206.00 / 19.70 / 0.981 / 181.88 / 14.99 / 0.999 / 173.49 / 14.23 / 1.000
70 / 210.91 / 18.25 / 0.985 / 168.89 / 32.87 / 0.948 / 210.91 / 24.16 / 0.985 / 186.65 / 15.33 / 0.995 / 175.12 / 14.38 / 1.000
80 / 223.27 / 19.29 / 0.987 / 149.83 / 26.42 / 0.965 / 223.27 / 29.91 / 0.987 / 250.73 / 20.34 / 0.987 / 171.40 / 14.03 / 0.996
90 / 215.93 / 18.46 / 0.977 / 119.48 / 18.22 / 0.926 / 215.93 / 41.21 / 0.977 / 509.20 / 39.25 / 0.639 / 335.28 / 26.40 / 0.945

Figure S.2 gives different DTG curves fitted by nonlinear least squares minimization (NLSM) for different heating rate for beechwood (5°Cmin-1, 10°Cmin-1and 15°Cmin-1) and flax shives (6°Cmin-1, 10°Cmin-1and 15°Cmin-1).

Fig. S.2: DTG curves fitted by nonlinear least squares minimization (NLSM) for different heating rate for beechwood: a) 5°Cmin-1, b) 10°Cmin-1 and c) 15°Cmin-1 and flax shives: d) 6°Cmin-1, e) 10°Cmin-1 and f) 15°Cmin-1.

Figure S.3 gives different DTG curves fitted by genetic algorithm (GA) for different heating rate for beechwood (5°Cmin-1, 10°Cmin-1and 15°Cmin-1) and flax shives (6°Cmin-1, 10°Cmin-1and 15°Cmin-1).

Fig. S.3: gives different DTG curves fitted by genetic algorithm (GA) for different heating rate for beechwood: a) 5°Cmin-1, b) 10°Cmin-1and c) 15 °Cmin-1) and flax shives: a) 6 °Cmin-1, b) 10 °Cmin-1and c) 15 °Cmin-1.

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