Reaction constants and activation energies in pyrolysis for populus alba

Document Type

Article

Publication Date

1-1-2018

Abstract

White poplar (Populus alba) is considered a good candidate for biomass production in Romania and Europe and can be used as a feedstock for production of bio-based fuels and energy. The present paper is focused on the determination of overall thermal behavior and the corresponding decomposition kinetics during pyrolysis of poplar wood. The biomass utilized was from different parts of the tree, namely small branches, twigs, buds and trunk. The proximate analysis indicated that the biomass is composed of volatile matter 79.23% and char 20.78%, (ash 4.25%, fixed carbon 16.25%). The moisture of 12.59% was measured on the samples as received. The mass variation revealed that the mass drop is not linear and varies from minute to minute starting with 0.08 % at 300°C to 22.73% at 800°C. The activation energy was computed for each temperature, from 300°C to 800°C, and it has been compared with the results from literature. The activation energy value for the range of temperatures, 300-800°C, is 29.65 kJ/mol, and the frequency factor is 2.8[s-1].

Publication Source (Journal or Book title)

UPB Scientific Bulletin, Series B: Chemistry and Materials Science

First Page

65

Last Page

74

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