TG–FTIR and Py–GC/MS analysis on pyrolysis and combustion of pine sawdust

Li, Aimin; Quan, Cui; Du, Lin; Duan, Yue

doi:10.1016/j.jaap.2012.11.009

Cited by 341 publications

(167 citation statements)

References 33 publications

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“…6(f)). The H2O emission was mostly finished beyond 500 °C, and the emission within 100 to 500 °C was mostly from the evolution of bound water and bulk water, as well as crystallization water present in mineral substances (Gao et al 2013). After 500 °C, the H2O emission decreased remarkably with the elevated pyrolysis temperature.…”

Section: Fig 6 Ms Ion Intensity Curves During the Pyrolysis Of CC Umentioning

confidence: 97%

“…The development of a mathematical model predicting the qualities of gaseous products in the processes of gasification and pyrolysis requires the knowledge of the thermal pyrolysis kinetics of biomass (Kumar et al 2008). Researchers have carried out numerous studies on the thermo-physical characterization of different biomass feedstocks, such as corn stover (Kumar et al 2008), cotton stalk (Munir et al 2009;Sun et al 2010;Zhang et al 2016), pine sawdust (Gao et al 2013), apple pomace (Baray et al 2014), sugar cane bagasse (Munir et al 2009;Meng et al 2013), hardwood residues (Mazlan et al 2015), wood lignin (Liu et al 2008), soybean stalk and sorghum stalk (Zhang et al 2016), etc. In addition, the composition and content of the main biomass component can significantly affect the thermal decomposition during the biomass pyrolysis (Zhang et al 2016).…”

Section: Introductionmentioning

confidence: 99%

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Research on the Thermo-Physical Properties of Corncob Residues as Gasification Feedstock and Assessment for Characterization of Corncob Ash from Gasification

Yao

Liang

2016

BioResources

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Harnessing energy from biomass is environmentally friendly because of the essentially zero net CO2 impact. As a common agricultural byproduct, corncobs are abundant in quantity. This study was carried out to examine the thermo-physical properties of corncobs and characterize the properties of corncob ash produced from gasification, in order to provide a basis for transforming it into value-added products. The results showed that the pyrolysis of corncobs followed a three-step, stepwise mechanism. Activation energies calculated by the Coats-Redfern method at heating rates of 5, 10, and 20 °C/min were 79.08, 76.73, and 75.78 kJ·mol -1 , respectively, implying that the corncobs could be decomposed easily at high heating rates. The emissions of CO, CO2, CH4, H2, H2O, and O2 during pyrolysis corresponded well with thermal curves. Corncob ash could be a good fertilizer because of its high contents of K, P, and Ca. The high SiO2 content makes the corncob ash suitable for ceramics and blended cement concrete. Sylvite (KCl) and quartz (SiO2) were the two major crystal phases in the corncob ash. Relatively large particles of unburnt carbon residues in the ash indicated that low-cost adsorbent could be developed from these carbon residues.

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Section: Fig 6 Ms Ion Intensity Curves During the Pyrolysis Of CC Umentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Research on the Thermo-Physical Properties of Corncob Residues as Gasification Feedstock and Assessment for Characterization of Corncob Ash from Gasification

Yao

Liang

2016

BioResources

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“…The second stage takes place between 423 K and 637 K and it is characterised by volatilisation (pyrolysis) process of cellulosic and hemicellulosic fractions (holocellulosic component). The third stage, for which the temperature varies between 637 K and 1273 K, is characterised by char combustion, producing volatiles and solid residues Conesa et al, 1997;Gao et al, 2013).…”

Section: Cpeczasopismapanpl; Degruytercom/view/j/cpementioning

confidence: 99%

“…Analysis of the FTIR spectrum shows that the main gaseous products of the combustion process in the temperature of first stage are H 2 O, CO 2 , CO and some organics including bonds: C=O (acids, aldehydes and ketones), C=C (alkenes, aromatics), C-O-C (ethers) and C-OH. (Gao et al, 2013). The spectral regions of 3000-2800 cm…”

Section: Cpeczasopismapanpl; Degruytercom/view/j/cpementioning

confidence: 99%

“…Weight loss and calculated kinetic parameters are easily obtained from thermogravimetric analysis without considering complex chemical reactions taking place in thermal degradation. The evolved gases are detected in real-time, which is an important and often difficult task for many thermal applications (Ahamed and Alshehri, 2012;Gao et al, 2013;Lee and Fasina, 2009). …”

Section: Introductionmentioning

confidence: 99%

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Thermogravimetric and Kinetic Analysis of Raw and Torrefied Biomass Combustion

Kopczyński¹,

Plis²,

Zuwała³

2015

Chemical and Process Engineering

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The use of torrefied biomass as a substitute for untreated biomass may decrease some technological barriers that exist in biomass co-firing technologies e.g. low grindability, high moisture content, low energy density and hydrophilic nature of raw biomass. In this study the TG-MS-FTIR analysis and kinetic analysis of willow (Salix viminalis L.) and samples torrefied at 200, 220, 240, 260, 280 and 300 o C (TSWE 200, 220, 240, 260, 280 and 300), were performed. The TG-DTG curves show that in the case of willow and torrefied samples TSWE 200, 220, 240 and 260 there are pyrolysis and combustion stages, while in the case of TSWE 280 and 300 samples the peak associated with the pyrolysis process is negligible, in contrast to the peak associated with the combustion process. Analysis of the TG-MS results shows m/z signals of 18, 28, 29 and 44, which probably represent H 2 O, CO and CO 2 . The gaseous products were generated in two distinct ranges of temperature. H 2 O, CO and CO 2 were produced in the 500 K to 650 K range with maximum yields at approximately 600 K. In the second range of temperature, 650 K to 800 K, only CO 2 was produced with maximum yields at approximately 710 K as a main product of combustion process. Analysis of the FTIR shows that the main gaseous products of the combustion process were H 2 O, CO 2 , CO and some organics including bonds: C=O (acids, aldehydes and ketones), C=C (alkenes, aromatics), C-O-C (ethers) and C-OH. Lignin mainly contributes hydrocarbons (3000-2800 cm ). Hydrocarbons, aldehydes, ketones and various acids were also generated from hemicellulose (1790-1650 cm −1). In the kinetic analysis, the two-steps first order model (F1F1) was assumed. Activation energy (E a ) values for the first stage (pyrolysis) increased with increasing torrefaction temperature from 93 to 133 kJ/mol, while for the second stage (combustion) it decreased from 146 to 109 kJ/mol for raw willow, as well as torrefied willow at the temperature range of 200-260°C. In the case of samples torrefied at 280 and 300°C, the E a values of the first and second stage were comparable to E a of untreated willow and torrefied at 200°C. It was also found that samples torrefied at a higher temperature, had a higher ignition point and also a shorter burning time.

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Introduction to Epoxy Composites

Pulikkalparambil

Siengchin

2021

Epoxy Composites

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TG–FTIR and Py–GC/MS analysis on pyrolysis and combustion of pine sawdust

Cited by 341 publications

References 33 publications

Research on the Thermo-Physical Properties of Corncob Residues as Gasification Feedstock and Assessment for Characterization of Corncob Ash from Gasification

Research on the Thermo-Physical Properties of Corncob Residues as Gasification Feedstock and Assessment for Characterization of Corncob Ash from Gasification

Thermogravimetric and Kinetic Analysis of Raw and Torrefied Biomass Combustion

Introduction to Epoxy Composites

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