Engineering Properties of Biomass

Lam, Pak Sui; Sokhansanj, Shahab

doi:10.1007/978-1-4899-8014-4_2

Cited by 7 publications

(3 citation statements)

References 36 publications

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“…Unlike bulk density, particle density is defined as the mass of an individual or a group of particles per the occupying volume that does not include the pore space volume. 63 Particle density is needed to evaluate the hydrodynamic behavior of biomass in drying, handling, and fluidization applications. Since biomass particles are not simple or consistently geometrical in shape, it is challenging to measure volumes directly.…”

Section: ■ Introductionmentioning

confidence: 99%

Characterizing Variability in Lignocellulosic Biomass: A Review

Yan

Oyedeji

Leal

et al. 2020

ACS Sustainable Chem. Eng.

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Feedstock variability is a significant barrier to the scale-up and commercialization of lignocellulosic biofuel technologies. Variability in feedstock characteristics and behavior creates numerous challenges to the biorefining industry by affecting continuous operation and biofuels yields. Currently, feedstock variability is understood and explained largely on the basis of chemical composition. Physical and mechanical properties and behavior of lignocellulosic feedstock in various unit operations, studied through advanced analytical methods, can further explain variability. Such studies will enable us in developing processes and designing equipment to improve operation and conversion performance. In this perspective, we review several advanced analytical methods that measure density, moisture content, thermal properties, flowability, grindability, rheology properties, and micromorphological characteristics. We also discuss the correlations and interactions among these properties that reflect the complexity of lignocellulosic biomass as a feedstock and the associated quality metrics and logistics of supplying consistent quality feedstock to a biorefinery. We also examine methods that have not traditionally been used to characterize lignocellulosic feedstocks but have the potential to bridge the gap in our explanation of feedstock variability.

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Section: ■ Introductionmentioning

confidence: 99%

Characterizing Variability in Lignocellulosic Biomass: A Review

Yan

Oyedeji

Leal

et al. 2020

ACS Sustainable Chem. Eng.

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“…The method of Pak Sui Lam and Shahab Sokhansanj [16] was used to determine the bulk density of RS, CW-RS, HW-RS, and AL-RS. A funnel with the opening diameter of 1.5 cm was suspended over a cylindrical container with a height-diameter ratio of 1.40.…”

Section: Methodsmentioning

confidence: 99%

Effects of Extractives on Dimensional Stability, Dynamic Mechanical Properties, Creep, and Stress Relaxation of Rice Straw/High-Density Polyethylene Composites

et al. 2018

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The removal of rice straw extractives increases the interphase adhesion between rice straw and the high-density polyethylene (HDPE) matrix, while eradicating the inner defects of rice straw/HDPE composites. This study investigated the effect of rice straw extractives removal on the dimensional stability (water uptake and thermal expansion), dynamic mechanical properties, creep, and stress relaxation of rice straw/HDPE composites. Cold water (CW), hot water (HW), and 1% alkaline solution (AL) extraction methods were utilized to remove rice straw extractives. Extracted and unextracted rice straws were mixed with HDPE, maleated polyethylene (MAPE), and Polyethylene wax to prepare composites via extrusion. Removal of rice straw extractives significantly improved the dimensional stability, dynamic mechanical properties, and creep and stress relaxation of rice straw/HDPE composites, with the exception of the thickness swelling of the AL/HDPE and the thermal expansion of the rice straw/HDPE composites. HW/HDPE exhibited the best comprehensive performance.

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“…It has been reported that many physical properties of wood pellets may change due to humidity changes in storage environment, i.e., moisture contents and bulk density change, etc. [37]. Here, y = 0. influence of humidity on physical properties of wood pellets has been studied in detail, which include moisture absorption, moisture contents, bulk density and mechanical strength.…”

Section: Influences Of Humidity On Pellets Physical Propertiesmentioning

confidence: 99%

Influences of environmental humidity on physical properties and attrition of wood pellets

Deng

Alzahrani

Bradley

2019

Fuel Processing Technology

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Wood pellets have been widely used for power generation and domestic heating recently to substitute fossil fuels. For health and safety reasons, particle degradation and dusts generation in material storage and handling processes are always a serious concern for anyone involved. Also the level of fines in wood pellets can strongly influence fuel milling and combustion. For previous study, wood pellets attrition subjected to its mechanical properties has been reported. However pellet mechanical properties can be inconsistent and influenced by environmental conditions such as humidity, temperature and storage time. In this paper, attrition behaviour and dust generation of two types of wood pellets have been studied, which the pellets were stored in a constant relative humidity environment for a period of time (4 days). Physical properties such as moisture contents, bulk density and flexural stress of the pellets were measured for the pellets conditioned in a RH chamber, which was believed that equilibrium condition was achieved. Correspondingly, the conditioned pellets for a number of different humidity levels were tested for both impact test and dustiness test. The study shows that the pellets can lose structural strength due to in taking moisture from environment for a high relative humidity. Also a high humidity can result in an increased level of pellet degradation and dusts generated.

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Engineering Properties of Biomass

Cited by 7 publications

References 36 publications

Characterizing Variability in Lignocellulosic Biomass: A Review

Characterizing Variability in Lignocellulosic Biomass: A Review

Effects of Extractives on Dimensional Stability, Dynamic Mechanical Properties, Creep, and Stress Relaxation of Rice Straw/High-Density Polyethylene Composites

Influences of environmental humidity on physical properties and attrition of wood pellets

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