Trials of wood carbonization of some forest and fruit-bearing species

“…The partially carbonized cotton stalks during the carbonization processes are called unburnt cotton stalks. The term "unburnt material" was used by Mlaouhi et al (1999), however other authors used the term "partially carbonized material" (Patil et al, 2000). Unburnt cotton stalks are manually separated with charcoal.…”

Section: Processmentioning

confidence: 99%

Determination of processes suitable for cotton stalk carbonization and torrefaction by partial combustion using a metal kiln

Harouna

Sanogo

Daho

et al. 2015

Energy for Sustainable Development

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“…Wood composition varies with species, habitat, age and location (e.g., roots, trunk, branches) (Ó rfão et al, 1999). As a result, ignition temperatures and burning efficiency are different for different types of vegetation (Grotkjaer et al, 2003), which are related to moisture (Mlaouhi et al, 1999) and size (Graça et al, 1999). The moisture content of the vegetation also influences the chemical restructuring and shrinkage of the char (Bryden and Hagge, 2003).…”

Section: Introductionmentioning

confidence: 99%

Tracking recorded fires using charcoal morphology from the sedimentary sequence of Prosser Lake, British Columbia (Canada)

2006

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Quantitative analyses of variations in morphological features of charcoal were undertaken in a 210Pb-dated sediment core from Prosser Lake (British Columbia, Canada). Seven morphological types of charcoal were defined by particle shape, major–minor axis ratio, apparent porosity and progradation to unburned material. The distribution of morphotypes and total charcoal abundances were assessed as a proxy for fire events recorded between 1919 and 2000 and to subsequent mechanisms of transportation–sedimentation to lake sediments. Charcoal morphotypes showed distinct relationships to recorded area burned by fires. Fragile charcoal fragments with highly irregular porosity (termed Type M) displayed the strongest correlation to burned area (r2 = 0.51; P = 0.0001) and did not produce any false-positive signal for fires recorded within a radius of 20 km around the lake. We infer that high porosity and low density Type M fragments are aerially transported and directly deposited on the lake, and that the fragility of Type M charcoal prevents significant quantities from being secondarily transported and incorporated into the sedimentary record. We propose that charcoal morphology is an important but underutilized technique that can yield important insights into fire type, proximity and transportation–sedimentation processes.

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Modeling Biomass Gasification Using Thermodynamic Equilibrium Approach

Huang

Ramaswamy

2009

Appl Biochem Biotechnol

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In this paper, the thermodynamic equilibrium models for biomass gasification applicable to various gasifier types have been developed, with and without considering char. The equilibrium models were then modified closely matching the CH(4) only or both CH(4) and CO compositions from experimental data. It is shown that the modified model presented here based on thermodynamic equilibrium and taking into account local heat and mass considerations can be used to simulate the performance of a downdraft gasifier. The model can also be used to estimate the equilibrium composition of the syngas. Depending on the gasifier type and internal fluid flow, heat and mass transfer characteristics, with proper modification of the equilibrium model, a simple tool to simulate the operation and performance of varying types of biomass gasifier can be developed.

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Trials of wood carbonization of some forest and fruit-bearing species

Cited by 5 publications

References 0 publications

Determination of processes suitable for cotton stalk carbonization and torrefaction by partial combustion using a metal kiln

Determination of processes suitable for cotton stalk carbonization and torrefaction by partial combustion using a metal kiln

Tracking recorded fires using charcoal morphology from the sedimentary sequence of Prosser Lake, British Columbia (Canada)

Modeling Biomass Gasification Using Thermodynamic Equilibrium Approach

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