期刊
POWDER TECHNOLOGY
卷 412, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.powtec.2022.118031
关键词
Loblolly pine; Moisture; Powder rheology; Shear stress; Compressibility; Anatomical fraction
资金
- U.S. Department of Energy (DOE), Bioenergy Technologies Office (BETO) as part of the FCIC: Feedstock Conversion Interface Consortium [33740]
Moisture content has different effects on different anatomical fractions of pine residue, with the 2 mm bark and needle fractions being more susceptible to moisture. The stem and whole fractions show minimal changes upon moisture introduction. The rheological properties of the 4 mm fractions do not have significant changes with moisture, but they exhibit more unpredictable behavior compared to the 2 mm fractions.
This study focused on assessing the influence of moisture content on the rheological properties of different anatomical fractions of pine residue using the FT4 powder rheometer. Moisture content exhibited some influence on the 2 mm bark and needle fractions, increasing their cohesion, angle of internal friction, unconfined yield strength, and major principal stress. Stem and whole, on the other hand, presented minimal changes upon moisture introduction. All 4 mm fractions did not show many changes in their rheological properties with moisture introduction, which can be due to less particle-particle interactions and consequently reducing any liquid bridging the particles might undergo; however, they were shown to have a more unpredictable behavior compared to the 2 mm analogues (i.e., higher standard deviation) which can be due to a higher degree of particle-interlocking. Out of the three fractions, needle presented the poorest rheological properties for flow-ability in addition to being susceptible by moisture, unlike other fractions.
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