Effect of cellulose and lignin content on pyrolysis and combustion characteristics for several types of biomass

Gani, Asri; Naruse, Ichiro

doi:10.1016/j.renene.2006.02.017

Cited by 453 publications

(203 citation statements)

References 11 publications

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“…At higher temperatures (500 to 700 °C), the bio-char was carbonaceous. Thinking of the high cellulose content in biomass (Gani and Naruse 2007), the heating rate has an enormous effect on the pyrolysis of cellulose. The rapid heating of the biomass favors the polymerization of cellulose and the formation of volatiles and suppresses the dehydration to anhydrocellulose and char formation (Ayhan 2004).…”

Section: Summary and Discussionmentioning

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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Section: Summary and Discussionmentioning

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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“…Lignin-richer biomass is considered to produce better charcoal (higher calorific value) and Lee et al (2013) showed that the higher lignin content, the higher is the biochar yield. Gani and Naruse (2007) stated that biomass with higher cellulose content pyrolyzes faster than biomass with higher lignin content.…”

Section: Chemical Composition Of Feedstockmentioning

confidence: 99%

Biochar: Pyrogenic Carbon for Agricultural Use - A Critical Review

Novotny

Maia

Carvalho

et al. 2015

Rev. Bras. Ciênc. Solo

175

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Biochar (carbonized biomass for agricultural use) has been used worldwide as soil amendment and is a technology of particular interest for Brazil, since its "inspiration" is from the historical Terra Preta de Índios (Amazon Dark Earth), and also because Brazil is the world's largest charcoal producer, generating enormous residue quantities in form of fine charcoal and due to the availability of different residual biomasses, mainly from agroindustry (e.g., sugar-cane bagasse; wood and paper-mill wastes; residues from biofuel industries; sewage sludge etc), that can be used for biochar production, making Brazil a key actor in the international scenario in terms of biochar research and utilization). In the last decade, numerous studies on biochar have been carried out and now a vast literature, and excellent reviews, are available. The objective of this paper is therefore to deliver a critical review with some highlights on biochar research, rather than an exhaustive bibliographic review. To this end, some key points considered critical and relevant were selected and the pertinent literature "condensed", with a view to guide future research, rather than analyze trends of the past.

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“…The large number of studies published on its properties is explained by important interests to optimize the natural resource consumption [3,4], prevention of fire [5], bone regeneration [6], specific cellulose membranes [7,8] or decrease the cost of cellulose extraction process by wood genetic modification [9] in paper industry for example.…”

Section: Introductionmentioning

confidence: 99%

Influence of hydrogen bonds on glass transition and dielectric relaxations of cellulose

Roig¹,

Dantras²,

Dandurand³

et al. 2011

J. Phys. D: Appl. Phys.

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The molecular dynamic in hydrated cellulose has been investigated by a combination of thermal analyses and dielectric spectroscopy. Differential Scanning Calorimetry (DSC) shows the dependence upon hydration of the glass transition temperature T g . A physical ageing phenomenon has been observed. At the molecular scale, bound water is hydrogen bonded to polar sites of cellulose macromolecules. At the macroscopic scale, water molecules play the role of a plasticizer for cellulose lowering its T g . Dynamic Dielectric Spectroscopy (DDS) combined with Thermostimulated Currents (TSC) have allowed us to follow more localized molecular mobility. The β relaxation mode is characterized by activation entropies that vanish for higher water contents indicating molecular mobility localization. It is plasticized by water like the glass transition. This analogy is explained by a common origin of both mechanisms: the mobility of the cellulose backbone. The evolution of the γ mode upon hydration follows an anti-compensation law. Water acts as an anti-plasticizer in a hydrogen bonded network.

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Effect of cellulose and lignin content on pyrolysis and combustion characteristics for several types of biomass

Cited by 453 publications

References 11 publications

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

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

Biochar: Pyrogenic Carbon for Agricultural Use - A Critical Review

Influence of hydrogen bonds on glass transition and dielectric relaxations of cellulose

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