Particle size and particle size distributions were
determined according to ASABE Standard S319.4 (ASABE
Standards, 2008c). This involved sieving 100 g of ground
sample through a set of sieves with sizes ranging from U.S.
sieve No. 4 (4.75 mm openings) to No. 270 (0.053 mm
openings). The set of sieves was vibrated using a Ro-Tap
shaker (RX-29, Tyler, Inc., Mentor, Ohio) for 10 min, after
which the ground material retained on each sieve was
weighed. The geometric mean diameter (dgw) and geometric
standard deviation (Sgw) were calculated using the procedure
specified in ASABE Standard S319.4. A histogram
showing the distributions was used to compare the effect of
initial moisture content of the feedstock on the final particle
size distribution of the ground particles.
Particle size and particle size distributions weredetermined according to ASABE Standard S319.4 (ASABEStandards, 2008c). This involved sieving 100 g of groundsample through a set of sieves with sizes ranging from U.S.sieve No. 4 (4.75 mm openings) to No. 270 (0.053 mmopenings). The set of sieves was vibrated using a Ro-Tapshaker (RX-29, Tyler, Inc., Mentor, Ohio) for 10 min, afterwhich the ground material retained on each sieve wasweighed. The geometric mean diameter (dgw) and geometricstandard deviation (Sgw) were calculated using the procedurespecified in ASABE Standard S319.4. A histogramshowing the distributions was used to compare the effect ofinitial moisture content of the feedstock on the final particlesize distribution of the ground particles.
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