Thermogravimetric analysis as a new method to determine the lignocellulosic composition of biomass

Carrier, Marion; Loppinet-Serani, Anne; Denux, Dominique; Lasnier, Jean-Michel; Ham-Pichavant, Frédérique; Cansell, François; Aymonier, Cyril

doi:10.1016/j.biombioe.2010.08.067

Cited by 617 publications

(333 citation statements)

References 23 publications

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“…Its content depends on relative amount of lignin, cellulose and hemicelluloses, which in turn decompose over different temperature ranges [82]. The two stages of pine pyrolysis are clearly distinguishable: (i) for α=0.06-0.8 fragmentation of hemicelluloses, cellulose and lignin occurs [83,84], whose respective energy barriers of 55-187, 195-236 and 35-267 kJ/mol had been determined [28]; and (ii) between α=0.81-0.91, whose high energy barrier is due to the formation of a complex polycyclic aromatic structure (char formation) [28,84].…”

Section: Pyrolysis Kinetics and Thermodynamicsmentioning

confidence: 99%

Structure-reactivity relationship in pyrolysis of plastics: A comparison with natural polymers

Larraín

Carrier

Radović

2017

Journal of Analytical and Applied Pyrolysis

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Highlights• Global activation energy depends on conversion in pyrolysis of all polymers.• Activation energy variability is proportional to chemical complexity of polymers.• An Evans-Polanyi relationship for initiation reactions of polymer pyrolysis is proposed. AbstractRecent advances in plastics recycling confirm the high potential of pyrolysis technologies to enhance recovery and selectivity rates. Modelling the kinetics of this complex process to stimulate scaling-up opportunities remains a major challenge.This study is an attempt to develop practical quantitative reactivity indices for the pyrolysis of natural and synthetic polymers. Representative samples from both categories (coal and pine vs. PET, PE and PMMA) were selected. Their weight loss during pyrolysis was determined experimentally and analyzed using judicious lumping procedures for its initiation, propagation and termination steps. The combined experimental and theoretical approach allowed us to determine apparent activation energies using the isoconversional Friedman method; and the use of Benson's group contribution method generated reaction enthalpies for the initiation reactions. Increasing activation energies with conversion in each case indicated that bond scission proceeds in order of increasing bond strength. The greater chemical complexity of natural polymers was reflected in the higher coefficients of variability for activation energy and wider ranges of reaction enthalpies. A structure-reactivity relationship based on the Evans-Polanyi theory was used to test the hypothesis that primary pyrolysis kinetics is controlled by cleavage of weakest chemical bonds. While the results show that this approach is promising, especially if confirmed by extension to a larger data set, they also suggest the need to compare the relative kinetic importance of initiation and propagation steps in the sequence of polymer pyrolysis reactions.

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Section: Pyrolysis Kinetics and Thermodynamicsmentioning

confidence: 99%

Structure-reactivity relationship in pyrolysis of plastics: A comparison with natural polymers

Larraín

Carrier

Radović

2017

Journal of Analytical and Applied Pyrolysis

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“…Hence, the temperature for pyrolysis was selected at 450 °C. Hemicellulose in biomass is known to degrade in the temperature range of 200-300 °C, cellulose at 25-350 °C and lignin at a wider range of 200-500 °C (Carrier et al, 2011).…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

Physico-Chemical Properties of Bio-Oils from Pyrolysis of Lignocellulosic Biomass with High and Slow Heating Rate

Nanda¹,

Mohanty²,

Koziński³

et al. 2014

EER

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Bio-oil is a major product of biomass pyrolysis that could potentially be used in motor engines, boilers, furnaces and turbines for heat and power. Upon catalytic upgrading, bio-oils can be used as transportation fuels due to enhancement of their fuel properties. In this study, bio-oils produced from lignocellulosic biomasses such as wheat straw, timothy grass and pinewood were estimated through slow and high heating rate pyrolysis at 450 °C. The slow heating rate (2 °C/min) pyrolysis resulted in low bio-oil yields and high amount of biochars, whereas the high heating rate (450 °C/min) pyrolysis produced significant amount of bio-oils with reduced biochar yields. The physico-chemical and compositional analyses of bio-oils were achieved through carbon-hydrogen-nitrogen-sulfur (CHNS) studies, calorific value, Fourier transform-infra red (FT-IR) spectroscopy, gas chromatography-mass spectrometry (GC-MS), electrospray ionization-mass spectrometry (ESI-MS) and nuclear magnetic resonance (NMR) spectroscopy. The yields of bio-oils produced from the three biomasses were 40-48 wt.% through high heating rate pyrolysis and 18-24 wt.% through slow heating rate pyrolysis. The chemical components identified in bio-oils were classified into five major groups such as organic acids, aldehydes, ketones, alcohols and phenols. The percent intensities of hydrogen and carbon containing species were calculated from 1 H and 13 C-NMR. The study on bio-oils from herbaceous and woody biomasses revealed their potentials for fossil fuel substitution and bio-chemical production.

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“…Constructed apparatus allows to study thermal decomposition of solid fuels and obtained thermogravimetric curves are similar to those that can be performed on commercial thermobalances [5][6][7][8][9]. The advantage of the device is definitely lower price than of commercial solutions (approx.…”

Section: Test Resultsmentioning

confidence: 99%

Thermogravimetric analysis in the study of solid fuels

Wróblewski

Ceran

2016

E3S Web Conf.

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Abstract. Depletion of fossil energy is the reason for the exploration of the possibility of the use of renewable energy resources. In the article describes a method of thermo-gravimetric analysis and concept, design and execution of the instrument to thermogravimetric measurements placed in the Laboratory of Fuel and Energy Conversion of Institute of Electrical Power Engineering of Poznan University of Technology. The further part of the paper contains the results of the tests carried out on two types of solid fuels (pellets from sawdust and energy willow wood chips ) in the form of a thermogravimetric curves. This analysis is to determine the level of the pyrolysis process temperature and degree of conversion of solid fuels into fuel gas. These studies are conducted by looking at opportunities to improve the energy efficiency of the gasification process of biomass.

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Thermogravimetric analysis as a new method to determine the lignocellulosic composition of biomass

Cited by 617 publications

References 23 publications

Structure-reactivity relationship in pyrolysis of plastics: A comparison with natural polymers

Structure-reactivity relationship in pyrolysis of plastics: A comparison with natural polymers

Physico-Chemical Properties of Bio-Oils from Pyrolysis of Lignocellulosic Biomass with High and Slow Heating Rate

Thermogravimetric analysis in the study of solid fuels

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