Arrhenius plot for conversion of teak sawdust biomass to volatiles and gases
reveals the activation energy of 28.12 kJ/mol and pre-exponential factor of
1.648 min
À1 (Fig. 12.9). Arrhenius plot for conversion of teak sawdust biomass to
char reveals the activation energy of 1.959 kJ/mol and Arrhenius factor of
0.013 min
À1 (Fig. 12.10). Reactions with high activation energies are very temperature sensitive; reactions with low activation energies are relatively temperature
insensitive (Babu 2008; Prakash and Karunanithi 2008; Kumar et al. 2010).
Hence, reaction from teak sawdust biomass to volatiles and gases is more temperature sensitive than to char (Koufopanos et al. 1989; Jalan and Srivastava 1999;
Levenspiel 1999).
y = -3383.1x + 0.4997
R² = 0.9766
-6
-5
-4
-3
-2
-1
0
0
0.0004
0.0008
0.0012
0.0016
0.002
ln k
1
1/T (K -1 )
Fig. 12.9 Arrhenius plot for conversion of teak sawdust biomass to volatiles and gases
y = -235.67x - 4.3533
R² = 0.9147
-4.8
-4.78
-4.76
-4.74
-4.72
-4.7
-4.68
-4.66
-4.64
-4.62
-4.6
0
0.0004
0.0008
0.0012
0.0016
0.002
ln k
2
1/T (K -1 )
Fig. 12.10 Arrhenius plot for conversion of teak sawdust biomass to char
12 Modelling and Simulation of Pyrolysis of Teak (Tectona Grandis) Sawdust
335