A review on pyrolysis of biomass constituents: Mechanisms and composition of the products obtained from the conversion of cellulose, hemicelluloses and lignin

Collard, François–Xavier; Blin, Joël

doi:10.1016/j.rser.2014.06.013

Cited by 1,464 publications

(823 citation statements)

References 106 publications

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“…The solids conversion and condensable formation increased slowly as the temperature was raised from 375 ºC to 525 ºC. This further weight loss was reported to be associated with the rearrangement of the residue during the charring process [37]. In contrast with cellulose, high heating rate significantly enhanced liquid and gas formation, while decreasing yield of solid residue due to a different reaction mechanism [38].…”

Section: Pyrolysis Of Biomass Componentsmentioning

confidence: 97%

“…A higher decomposition rate was observed from 375 ºC to 450 ºC, although at 525 ºC there was still 52% residual char. The main reactions in this temperature range may be the cleavage of substituents from the aromatic rings and of linkages between monomer units [37]. Experiments performed at 0.5, 100 and 1000 ºC s -1 showed that, similar to xylan, faster heating rates led to higher tar yield at the expense of char and gas yield.…”

Section: Pyrolysis Of Biomass Componentsmentioning

confidence: 99%

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Cellulose, xylan and lignin interactions during pyrolysis of lignocellulosic biomass

Paterson

Blamey

et al. 2017

Fuel

362

127

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Section: Pyrolysis Of Biomass Componentsmentioning

confidence: 97%

Section: Pyrolysis Of Biomass Componentsmentioning

confidence: 99%

Cellulose, xylan and lignin interactions during pyrolysis of lignocellulosic biomass

Paterson

Blamey

et al. 2017

Fuel

362

127

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“…With a low heating rate, weak bonds break, but many others remain stable. The polymer's structure is slightly affected, which favors the rearrangement reactions and the stable carbon matrix would inhibit the release of volatiles, thus resulting in a higher yield of bio-char (Collard and Blin 2014). At a higher heating rate, more bonds break before the rearrangement reactions happen.…”

Section: Char Yield Ratementioning

confidence: 99%

“…Biomass, the precursor of fossil feedstock, is a renewable substitution for fossil fuels (Collard and Blin 2014). It can be converted into fuels and chemical materials by biological (fermentation and anaerobic digestion) or thermochemical (gasification, pyrolysis, and liquefaction) processes.…”

Section: Introductionmentioning

confidence: 99%

Effects of Temperature and Heating Rate on the Characteristics of Molded Bio-char

Li¹,

Liu²,

Wang³

et al. 2016

BioResources

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A slow pyrolysis of pinewood was investigated in this paper. Through the briquette process, the pinewood sawdust becomes molded biomass. The molded bio-char was produced from molded biomass with different pyrolysis factors, and the bio-char's heating value, char yield rates, and physicochemical and morphological properties were investigated. Molded bio-char's characteristics depended principally on pyrolysis factors. At low temperature (400 °C), the char yield rate was positively correlated to the heating rate. But at higher temperatures (500 to 700 °C), the char yield rates decreased as heating rates increased. As pyrolysis temperature increased from 400 to 700 °C, the following increased in molded bio-char: fixed-carbon content, percentage carbon, heating value, ash content, as well as surface areas. And its pore structure, graphite degree, and polymerization degree achieved a higher level. Compared with pulverized bio-char, the molded bio-char had a higher char yield rate, ash content, graphite degree, and structure ordering. The molded bio-char obtained from a low temperature (400 °C) and high heating rate (15 °C/min) can be used as a reducing agent, the molded bio-char from 600 °C is recommend as an activated carbon precursor, and the molded bio-chars from low temperature (400 °C) have a higher efficiency as fuel.

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“…Reaction pathways of individual biomass components to formation of thermal products have been described (Collard and Blin, 2014). However, the pyrolysis literature suggests that biomass components tend to have more complex effects on bio-oil yield and product composition than simply their quantity.…”

Section: Models For Relationships Between Biomass Components and Bio-mentioning

confidence: 99%

Relationships between Biomass Composition and Liquid Products Formed via Pyrolysis

et al. 2015

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Thermal conversion of biomass is a rapid, low-cost way to produce a dense liquid product, known as bio-oil, that can be refined to transportation fuels. However, utilization of bio-oil is challenging due to its chemical complexity, acidity, and instability -all results of the intricate nature of biomass. A clear understanding of how biomass properties impact yield and composition of thermal products will provide guidance to optimize both biomass and conditions for thermal conversion. To aid elucidation of these associations, we first describe biomass polymers, including phenolics, polysaccharides, acetyl groups, and inorganic ions, and the chemical interactions among them. We then discuss evidence for three roles (i.e., models) for biomass components in the formation of liquid pyrolysis products: (1) as direct sources, (2) as catalysts, and (3) as indirect factors whereby chemical interactions among components and/or cell wall structural features impact thermal conversion products. We highlight associations that might be utilized to optimize biomass content prior to pyrolysis, though a more detailed characterization is required to understand indirect effects. In combination with high-throughput biomass characterization techniques, this knowledge will enable identification of biomass particularly suited for biofuel production and can also guide genetic engineering of bioenergy crops to improve biomass features.

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A review on pyrolysis of biomass constituents: Mechanisms and composition of the products obtained from the conversion of cellulose, hemicelluloses and lignin

Cited by 1,464 publications

References 106 publications

Cellulose, xylan and lignin interactions during pyrolysis of lignocellulosic biomass

Cellulose, xylan and lignin interactions during pyrolysis of lignocellulosic biomass

Effects of Temperature and Heating Rate on the Characteristics of Molded Bio-char

Relationships between Biomass Composition and Liquid Products Formed via Pyrolysis

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