Adsorption characteristics and pore-development of biomass-pyrolysis char

Raveendran, K.

doi:10.1016/s0016-2361(97)00246-9

Cited by 111 publications

(58 citation statements)

References 18 publications

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“…For making better use of char obtained from solar pyrolysis, the composition, surface area, pore structure and reactivity should be investigated in advance. Char reactivity and morphological structure are especially affected by the pyrolysis conditions (Blasi, 2009;Raveendran and Ganesh, 1998). The effects of pyrolysis conditions on the structure and reactivity of biomass chars have been investigated in several studies in relation to the following parameters: temperature (Fu et al, 2012a(Fu et al, , 2011Kim et al, 2012;Min et al, 2011;Bonelli et al, 2001), heating rate (Mermoud et al, 2006;Guerrero et al, 2005;Fushimi et al, 2003), residence time and pressure (Cetin et al, 2005(Cetin et al, , 2004.…”

Section: Introductionmentioning

confidence: 99%

The effect of temperature and heating rate on char properties obtained from solar pyrolysis of beech wood

Zeng

Minh

Gauthier

et al. 2015

Bioresource Technology

144

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, et al.. The effect of temperature and heating rate on char properties obtained from solar pyrolysis of beech wood. Bioresource Technology, Elsevier, 2015Elsevier, , 182, p.114-119. 10.1016Elsevier, /j.biortech.2015 The effect of temperature and heating rate on char properties obtained from solar pyrolysis of beech wood Char was obtained during solar pyrolysis at various temperatures and heating rates. ''Solar chars'' up to 2000°C and up to 450°C/s have been produced. Temperature and heating rate jointly affected char yield, structure and reactivity. Reactivity evolution with temperature and heating rate were related to structure. Keywords:Beech wood Solar pyrolysisChar structure ReactivityCombined effect a b s t r a c tChar samples were produced from pyrolysis in a lab-scale solar reactor. The pyrolysis of beech wood was carried out at temperatures ranging from 600 to 2000°C, with heating rates from 5 to 450°C/s. CHNS, scanning electron microscopy analysis, X-ray diffractometry, Brunauer-Emmett-Teller adsorption were employed to investigate the effect of temperature and heating rate on char composition and structure. The results indicated that char structure was more and more ordered with temperature increase and heating rate decrease (higher than 50°C/s). The surface area and pore volume firstly increased with temperature and reached maximum at 1200°C then reduced significantly at 2000°C. Besides, they firstly increased with heating rate and then decreased slightly at heating rate of 450°C/s when final temperature was no lower than 1200°C. Char reactivity measured by TGA analysis was found to correlate with the evolution of char surface area and pore volume with temperature and heating rate.

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Section: Introductionmentioning

confidence: 99%

The effect of temperature and heating rate on char properties obtained from solar pyrolysis of beech wood

Zeng

Minh

Gauthier

et al. 2015

Bioresource Technology

144

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“…There are number of studies dealing with the relationship between the pyrolytic conditions and the char structure [1,[3][4][5][6]. The operational parameters such as the heating rate, the reactor temperature and the residence time play the most significant roles in the operational control for the pyrolysis process.…”

Section: Introductionmentioning

confidence: 99%

“…Various biomasses were pyrolyzed in a packed bed reactor at 500 °C with a solid residence time of 1 h [4]. The pore evolution and development were studied by BET and SEM characterization.…”

Section: Introductionmentioning

confidence: 99%

Influence of Pyrolysis Temperature on Rice Husk Char Characteristics and Its Tar Adsorption Capability

2012

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A biomass waste, rice husk, was inspected by thermoanalytical investigation to evaluate its capability as an adsorbent medium for tar removal. The pyrolysis process has been applied to the rice husk material at different temperatures 600, 800 and 1000 °C with 20 °C/min heating rate, to investigate two topics: (1) influence of temperature on characterization of rice husk char and; (2) adsorption capability of rice husk char for tar removal. The results showed that subsequent to high temperature pyrolysis, rice husk char became a highly porous material, which was suitable as tar removal adsorbent with the ability to remove tar effectively. In addition, char characteristics and tar removal ability were significantly influenced by the pyrolysis temperature.

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“…In fact, steam gasification of carbon above 1573 K has been shown to be dictated by both diffusion of steam into pores and chemical reaction (transitional regime) where the overall reactivity is influenced by char porosity, active surface area, and extent of carbon graphitization, decreasing kinetic rate dependence on temperature [67]. Flash heating rates have been shown to increase macropores and surface roughness but decrease overall reactivity due to ash coalescence and decrease in meso and micropores [68][69][70]. For microalgae, then, a significant portion of carbon is bound within the char and formed soot and may be more difficult to react fully, resulting in lower carbon conversions and a lower fraction of carbon that ends up as carbon monoxide.…”

Section: Comparison Of Biomass Varietiesmentioning

confidence: 99%

High temperature thermochemical processing of biomass and methane for high conversion and selectivity to H2-enriched syngas

2015

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Adsorption characteristics and pore-development of biomass-pyrolysis char

Cited by 111 publications

References 18 publications

The effect of temperature and heating rate on char properties obtained from solar pyrolysis of beech wood

The effect of temperature and heating rate on char properties obtained from solar pyrolysis of beech wood

Influence of Pyrolysis Temperature on Rice Husk Char Characteristics and Its Tar Adsorption Capability

High temperature thermochemical processing of biomass and methane for high conversion and selectivity to H2-enriched syngas

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