Comparison and explanation of predictive capability of pellet quality metrics based on fundamental mechanical properties of ground willow and switchgrass

Karamchandani, Apoorva; Yi, Hojae; Puri, Virendra M.

doi:10.1016/j.apt.2016.04.036

Cited by 13 publications

(8 citation statements)

References 14 publications

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“…Our previous study showed a relationship between mechanical properties of bulk ground material and strength of densified biomass products (Karamchandani A., 2013;Karamchandani A. et al, 2016a). Leveraging this finding, the strength of particle-particle bonds at the microscale can be linked to the strength of densified assemblies at the macroscale.…”

Section: Introductionmentioning

confidence: 95%

“…Moisture content level of 17.5 % (w.b.) was considered for conditioning of ground switchgrass (Karamchandani A. et al, 2015(Karamchandani A. et al, , 2016b(Karamchandani A. et al, , 2016a. Switchgrass samples were conditioned in one batch of 25 g by adding required water and mixing with a manual MiniInversina (Bioengineering AG, Switzerland) that is capable of giving 360° motion (Karamchandani A. et al, 2015(Karamchandani A. et al, , 2016b.…”

Section: Test Materialsmentioning

confidence: 99%

“…Finer particle sizes generally correspond with greater pellet strength and durability as larger particles serve as fissure points (MacBain R., 1966). Based on our previous studies (Karamchandani A. et al, 2015(Karamchandani A. et al, , 2016a, the pellet qualities were not significantly different for the two screen sizes, i.e., 3.175 mm and 6.35 mm. There is a trade-off between the energy required to produce finer particles, i.e., time and cost of grinding and the properties of pellets.…”

Section: Introductionmentioning

confidence: 99%

“…2012;Colley Z. et al, 2006;Kaliyan N. and Morey R.V., 2009b;Karamchandani A. et al, 2015Karamchandani A. et al, , 2016aMani S. et al, 2003;Mani S. et al, 2004Mani S. et al, , 2006Poddar S. et al, 2014;Tumuluru J.S. et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Micromechanical Characterization of Particle-Particle Bond in Biomass Assemblies Formed at Different Applied Pressure and Temperature

Karamchandani

Puri

2019

KONA

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During biomass pelletization, the presence of activated natural binders is thought to promote the formation of solid bridges in a biomass assembly. To examine this hypothesis, bonded particles were extracted from the switchgrass compacts formed at different pressure and temperature. This study investigated the influence of these two factors on the resistance to dislocation of the particle-particle bond. The generated force-bond dislocation curves were used to calculate the slope from no load to failure from the assemblies formed at the treatments A (60 MPa and 75 °C), B (100 MPa at 75 °C), C (60 MPa and 90 °C), and D (100 MPa at 90 °C). Assemblies from the treatment B had the highest diametral tensile strength (60.9 ± 7.1 kPa) and densities (653.2 kg m -3 ), whereas, assemblies formed from the treatment C had the lowest diametral strength (7.2 ± 1.4 kPa). The resistance to dislocation of particle-particle bonds at microscale was linearly correlated to the strength (R 2 =0.838) and density (R 2 =0.981) of the densified assemblies. High pressures are documented to form stronger compacts. However, the presence of sufficient moisture at low temperature can significantly improve the densified assembly properties by lowering the glass transition temperature of lignin to form stronger bonds.

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Section: Introductionmentioning

confidence: 95%

Section: Test Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Micromechanical Characterization of Particle-Particle Bond in Biomass Assemblies Formed at Different Applied Pressure and Temperature

Karamchandani

Puri

2019

KONA

Self Cite

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“…The compression method has been widely applied in the practical industries for several decades, for example, in pharmaceutics [6], biomass fuel transportation [7], and ceramic and powder metallurgical industries [8]. Compression of cementitious materials was initially applied to study the isothermal sorption and microstructure of rigid porous compacts in the 1960s and 1970s [9,10].…”

Section: Introductionmentioning

confidence: 99%

Contact-Hardening Behavior of Calcium Silicate Hydrate Powders

et al. 2018

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Calcium silicate hydrate (C-S-H) synthesized by a hydrothermal process from lime and siliceous materials was oven-dried and compressed into compacts. The microstructure and compaction properties of the resulting powders were characterized. The results show that the powders containing an amorphous structure become hardened compacts immediately after compression. Compacts with high strength but a relatively lower bulk density were produced. Amorphous C-S-H plays a key role in the bonding formation during powder compaction. According to the Heckel plots, particle rearrangement and plastic deformation were involved in the compaction of C-S-H powders. Point contact between C-S-H particles due to particle rearrangement dominates at a low compression pressure (i.e., <20 MPa). Van der Waals forces and hydrogen bonding are the main bonding types. Plastic deformation occurs at a higher compression pressure (i.e., >60 MPa), which results in surface contact. Consequently, a solid bridge forms, and the strength of compacts increases rapidly. These findings provide novel insight into the utilization of materials containing amorphous calcium silicate hydrate.

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Production of Pellets from Furfural Residue and Sawdust Biomass: Effect of Moisture Content, Particle Size and a Binder on Pellet Quality and Energy Consumption

Ahmed

Ali

et al. 2021

Bioenerg. Res.

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Comparison and explanation of predictive capability of pellet quality metrics based on fundamental mechanical properties of ground willow and switchgrass

Cited by 13 publications

References 14 publications

Micromechanical Characterization of Particle-Particle Bond in Biomass Assemblies Formed at Different Applied Pressure and Temperature

Micromechanical Characterization of Particle-Particle Bond in Biomass Assemblies Formed at Different Applied Pressure and Temperature

Contact-Hardening Behavior of Calcium Silicate Hydrate Powders

Production of Pellets from Furfural Residue and Sawdust Biomass: Effect of Moisture Content, Particle Size and a Binder on Pellet Quality and Energy Consumption

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