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Pyrolytic Degradation Studies of Acacia mangium wood
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Chemical Reaction Engineering.ORCID iD: 0000-0002-1664-0278
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2015 (English)In: BioResources, ISSN 1930-2126, Vol. 10, no 1, 1825-1844 p.Article, review/survey (Refereed) Published
Abstract [en]

Pyrolytic degradation of Acacia mangium wood was studied. The chemical composition of biomass, immediate and elemental analyses and calorific value for biomass and char, were determined. The standard and the derivative curve thermogravimetric analysis (TGA and DTG) were obtained. Devolatilization maximum of values between 250 +/- 20 degrees C and 380 +/- 20 degrees C were observed, with completion after 2 h, which confirms the selection of 2 hours for pyrolysis. Kinetic study was performed at different heating rates for a conversion rate from 20% to 80%. Average values of activation energy for temperature in degrees K of 228.57 kJ/mol for Biomass 1 and 199.36 kJ/mol for Biomass 2 were obtained by the isoconversion method of FWO. The lower value of activation energy for Biomass 2 was related to the possible catalytic activity of ash. The values of correlation coefficient from 0.9418 to 0.9946 for Biomass 1 and from 0.8706 to 0.9918 for Biomass 2, indicate the reliability of the first-order reaction model. The caloric values obtained were: Biomass 1 (16962 kJ/kg), Biomass 2 (16974 kJ/kg), chars from Biomass 1 (between 23731 y 26 942 kJ/kg) and gas from Biomass 1 and Biomass 2 (3858.7 and 4859.4 kJ/m(3), respectively).

Place, publisher, year, edition, pages
2015. Vol. 10, no 1, 1825-1844 p.
Keyword [en]
Analysis, Biomass, Kinetic, Pyrolysis, Thermogravimetry
National Category
Materials Engineering
URN: urn:nbn:se:kth:diva-166359ISI: 000351941000144ScopusID: 2-s2.0-84923674211OAI: diva2:810668

QC 20150508

Available from: 2015-05-08 Created: 2015-05-07 Last updated: 2015-05-08Bibliographically approved

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