Devolatilisation kinetics and pyrolytic analyses of Tectona grandis (teak).
Devolatilisation kinetics and pyrolytic analyses were carried out on Tectona grandis (teak) using iso-conversional methods (Flynn-Wall-Ozawa and Starink) and analytical Py-GC/MS technique respectively. Proximate and elemental analyses were also performed and they showed that the ash and C contents and the HHV were 0.7%, 49.6% and 19.8MJ/kg respectively. Biomass sample was subjected to multiple heating rates (5-35K/min) in thermogravimetric experiments and kinetic parameters were evaluated from the non-isothermal TGA curves. The activation energy (E) varied between 222 and 300kJ/mol as a function of degree of conversion. Similarly, the pre-exponential frequency factor (A) varied between 9.6×10(17) and 9.55×10(24)min(-1). Analytical Py-GC/MS showed the presence of CO2, acetic acid, furan+2-butanone, levoglucosan, trans-coniferyl alcohol and lignin derivatives. The proportion of phenolic compounds identified was more than one-third with isoeugenol, acetoguaiacone, and 4-vinylguaiacol showing dominance.
Department of Forest, Rangeland and Fire Science, University of Idaho, Moscow, ID 83844-1132, USA.
A O
AO
Balogun
Department of Mechanical Engineering, Faculty of Engineering and Technology, University of Ilorin, Ilorin, Nigeria. Electronic address: oalasode@yahoo.com.
O A
OA
Lasode
Department of Forest, Rangeland and Fire Science, University of Idaho, Moscow, ID 83844-1132, USA.
A G
AG
McDonald
D018533:Biomass; D008401:Gas Chromatography-Mass Spectrometry; D007700:Kinetics; D019686:Lamiaceae / Q000737:chemistry*; D013696:Temperature; D013818:Thermogravimetry; D013997:Time Factors; D014835:Volatilization
Analytical pyrolysis; Biomass; Devolatilisation kinetics; Teak; Thermogravimetric analysis