Gasification kinetic analysis of the three pseudocomponents of biomass-cellulose, semicellulose and lignin

Key thermal events during pyrolysis and CO 2 -gasification of selected combustible solid wastes in a thermogravimetric analyser

“…1(b). The maximum rates of weight losses during pyrolysis of both poplar wood and paper occurred at ca 612 K, which was almost identical to that of cellulose pyrolysis under the same condition from our previous studies [27]. The positions of the DTG peaks in the gasification region for paper and poplar wood in CO 2 atmosphere occurred at ca 1084 K and ca 1089 K, respectively.…”

“…However, for the poplar sample, the stages II and III reactions proceeded from above to below its fixed carbon line. Generally speaking, the hemicellulose incurs thermal decomposition at 423-623 K, the cellulose degradation appears between 548 and 623 K and the lignin degradation takes place at 473-973 K [27]. Thus, it is believed that in the present work, the biochar of the poplar sample reacted in stage II, and the fixed carbon in stage III with CO 2 .…”

“…620 K) and hemicellulose (at ca. 900 K); but in CO 2 gasification, CO 2 attacks both C-C and C-H bonds indiscriminately [15][16][17]27] and therefore only the peak at 620 K was observed. Fig.…”

Characterization of energy carriers obtained from the pyrolysis of white ash, switchgrass and corn stover — Biochar, syngas and bio-oil

“…For the nine biochars, all of them have the same chemical bonds. That is because the biomass material consists of cellulose, hemicellulose and lignin which have a large amount of C, H and O [24]. It can also be seen that the strength of all chemical bonds was enhanced with the decrease of the temperature, which was also confirmed by Lee et al [28].…”

“…In previous research, the kinetic analysis of biomass pyrolysis [24,25] and the characterizations of biochar, syngas and bio-oil were investigated [26,27]. The main objective of this research was to investigate the characteristics of biochar, syngas and bio-oil from slow pyrolysis of white ash wood, switchgrass and corn stover at the temperature range from 300°°C to 500°°C.…”