Pyrolysis Dynamics of Biomass Residues in Hot-Stage

Abstract

Original data for mass, element, and methane dynamics under controlled pyrolysis are presented for several biomass feedstocks. The experimental system consisted of an environmental (low-vacuum) scanning electron microscopy (ESEM) with a hot-stage and energy-dispersive X-ray spectroscopy (EDS) detector. A tunable diode laser (TDL) was coupled to the ESEM vacuum pump to measure the methane partial pressure in the exhaust gases. Thermogravimetric analysis and differential thermal analysis (TG/DTA) in a N2 atmosphere was also carried out to assess the thermal properties of each biomass. It was found that biochars were depleted or enriched in specific elements, with distinct methane formation change. Results depended on the nature of the biomass, in particular the relative proportion of lignocellulosic materials, complex organic compounds, and ash. As final temperature was increased, N generally decreased by 30 to 100%, C increased by 20 to 50% for biomass rich in lignocellulose, and P, Mg, and Ca increased for ash-rich biomass. Methane formation also allows discriminating structural composition, providing fingerprints of each biomass. Biomass with low ashes and high lignin contents peaks CH4 production at 330 and 460 °C, whereas those biomasses with high ashes and low lignin peaks CH4 production at 330 and/or 400 °C.

Sustainable applications of lignocellulosic residues from the production of Brazil nut in the Peruvian Amazon

“…The biochars had similar properties to those reported by Bergier et al. (2015), with 7.8% ash, 2.1% K, and 0.3% P content. The results indicated that low applications of biochars increased the seedling survival rate and the overall measurements of plant development in the evaluated species.…”

“…These results are associated with the content of lignin (Brazil nut > palm kernel > açai), which highly influences biochar yield (Demirbas, 2004). Bergier et al (2015) produced biochar from various natural feedstocks, including Brazil nut endocarp, and meso-and exocarp separately. The endocarp biochar yield was the highest at 300 • C, yielding around 82%.…”

“…Bergier et al. (2015) produced biochar from various natural feedstocks, including Brazil nut endocarp, and meso‐ and exocarp separately. The endocarp biochar yield was the highest at 300°C, yielding around 82%.…”

Upgrading pyrolytic residue from waste tires to commercial carbon black

“…Some basic properties of PCB and CCB are listed in Table 7. The carbon content of PR is 81.79 wt %, which is much higher than 46.03 wt % carbon of the residue from high density polyethylene pyrolysis (Jamradloedluk and Lertsatitthanakorn, 2014) and 60.3 wt % carbon of the residue from Candeia tree pyrolysis (Bergier et al, 2015). This confirmed that the PR from waste tires was a carbon-rich substance.…”

Characterization of the pre-treated biomass of Eichhornia crassipes (water hyacinth) for the second generation ethanol production

“…The results are consistent with those found in the literature. Bergier et al (2015) [17] and Gao et al (2016) [15], reported that the largest loss of mass was in the second stage, related to cellulose and hemicellulose, in an approximate temperature of 400°C and that the lignin, being more stable, degraded at a higher temperature. Table 11 shows that, in the first stage, where sample dehydration occurs, the pre-treatment with acetic acid had the largest mass loss, 9.01%.…”