Fundamental aspects of biomass carbonisation

Strezov, Vladimir; Patterson, Michael J.; Zymla, Victor; Fisher, Karen R.; Evans, Tim; Nelson, Peter F.

doi:10.1016/j.jaap.2006.10.014

Cited by 85 publications

(37 citation statements)

References 16 publications

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“…The carbon content increases due to the heat treatment while N, H and S undergo only slight variations. In agreement with the results of other authors [22,23], the most significant variation corresponds to the oxygen content due to the evolution of CO and CO 2 . The highest reduction corresponds to SC1 and represents a 36% decrease.…”

Section: Main Characteristics Of the Materials Usedsupporting

confidence: 93%

Effect of the addition of waste sawdust on thermoplastic properties of a coal

Montiano

Barriocanal

Álvarez

2013

Fuel

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Three different sawdusts obtained as wastes from the furniture and flooring industry were selected to study their influence on coal thermoplastic properties. A bituminous coal with a high volatile matter content was chosen as base coal. To investigate the effect of reducing the oxygen content of the sawdusts upon the coal's properties, the sawdusts were heat treated to 250 °C. Blends of the coal with the three as-received and then heat-treated sawdusts were tested. In order to gain a better insight into the subject, the sawdusts were pyrolyzed at 400 °C to determine the effect of the resulting char and bio-oil upon the plastic properties of the base coal. The Gieseler curves corresponding to the coal-sawdust blends were calculated from the curves corresponding to the coal-char and coal-bio-oil blends. The errors obtained were in all six cases lower than the repeatability allowed by the ASTM standard for the Gieseler test. Considering that the effect of the additives is the sum of both chemical and physical effects, it was possible to evaluate the contribution of each of these to the reduction of coal fluidity. In all cases it was found that the physical effects were more important. The textural properties of the chars obtained at 400 °C from the biomass were found to be important for determining the influence of biomass on the coal fluidity.

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Section: Main Characteristics Of the Materials Usedsupporting

confidence: 93%

Effect of the addition of waste sawdust on thermoplastic properties of a coal

Montiano

Barriocanal

Álvarez

2013

Fuel

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“…5, the decrease in the char yield is greater in the 300-450 8C range (À38.6%) than in the 450-600 8C one (À7.5%), which means that it is not a linear dependence of the char yield with temperature; in the ANOVA analysis it can be observed as a significative curvature, which is calculated from the difference between the average of the results obtained at 300 and 600 8C (shown in Table 4) and the central point (450 8C). Similar tendencies have been observed in the fixed bed pyrolysis of other biomass residues as Meat and Bone Meal [11], hazelnut, walnut, almond and sunflower seed shells [15], sawdust, bagasse and macadamia nut shell [16], olive husk, corncob, tea waste [17], ligning from the pulping process [18], pistachio shell [19], Cynara Cardunculus [20], and rice husk [21]. The effect of particle size on the char yield was also observed in different pyrolysis works, as in Ref.…”

Section: Product Distributionsupporting

confidence: 80%

Influence of temperature and particle size on the fixed bed pyrolysis of orange peel residues

Aguiar

Márquez-Montesinos

Gonzalo

et al. 2008

Journal of Analytical and Applied Pyrolysis

128

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“…The heat flow curve includes the heats evolved during decomposition and reaction of the pyrolysis sample material. Therefore, during an endothermic heat effect, specific heat values increase, whereas specific heat decreases during an exothermic reaction [26]. The heat flow curve of the sample shows a decreased trend after 420K, although three curves exhibit the positive relationships between heat flow and temperature from 323K to 420K.…”

Section: Discussionmentioning

confidence: 93%

Thermal properties of big bluestem as affected by ecotype and planting location along the precipitation gradient of the Great Plains

Zhang

Johnson

Nelson

et al. 2014

Energy

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The objective of this research was to study the effect of ecotype and planting location on thermal properties of big bluestem. Three big bluestem ecotypes (CKS, EKS, ILL) and a cultivar (KAW) were harvested in 2010 from four locations (Colby, Hays, and Manhattan, KS; and Carbondale, IL) and were evaluated for their specific heat, thermal conductivity, thermal stability, high heating value (HHV), and proximate contents. All populations revealed a large variation in specific heat (2.35-2.62 kJ/kg/K), thermal conductivity (77.85-99.06×10-3 W/m/K), thermogravimetric analysis as weight loss during the heating process (71-73%), and HHV (17.64-18.67 MJ/kg). Specific heat of the big bluestem was significantly affected by planting location, ecotype, and interaction between location and ecotype. Planting location had stronger influence on specific heat than ecotype. Specific heat increased as temperature increased, and a linear correlation model for specific heat prediction was developed as a function of temperature.Ecotype, planting location, and the interaction of ecotype and planting location did not have a significant effect on thermal conductivity; however, density and particle size showed a completely opposite relationship on thermal conductivity. Both planting location and ecotype significantly affected HHV. Among all environmental factors, potential evapotranspiration had the most significant effect on thermal properties.

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Fundamental aspects of biomass carbonisation

Cited by 85 publications

References 16 publications

Effect of the addition of waste sawdust on thermoplastic properties of a coal

Effect of the addition of waste sawdust on thermoplastic properties of a coal

Influence of temperature and particle size on the fixed bed pyrolysis of orange peel residues

Thermal properties of big bluestem as affected by ecotype and planting location along the precipitation gradient of the Great Plains

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