Particle size and shape characterization of feedstock material for biofuel production
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Kuupäev
2019
Kättesaadav alates
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Ajakirja pealkiri
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Abstrakt
Particle size and shape are key factors influencing the properties of particulate and
agglomerated materials, and having an impact on a quality as well as utilization of a final product.
In case of plant biomass particle morphology is greatly irregular. Large errors at most
determinations of biomass particle sizes are caused by simplification on a single parameter of
size, assuming particle sphericity or circularity. Thus, the aim of a present research was to
determine the particle size in a complex way. Pine sawdust as an experimental material and
typical biofuel feedstock was ground by a hammer mill to a fraction size of 12 mm. The
dimensional features of such ground sawdust particles were identified for all particles
individually via photo-optical analysis, a method based on a digital image processing that is
sensitive to irregular particles’ shapes. The particles were described mainly by variables of length,
max width, equivalent diameter, max and min feret diameter, sphericity, roundness, circularity
together with length/width ratio and aspect ratio. Data were analysed by descriptive statistics, i.e.
by arithmetic means, medians, minimum and maximum values, variance and standard deviation.
The obtained results may contribute to a better knowledge of material properties needed for
designing an optimal technology for the production of quality biofuels.
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Article
Märksõnad
particle morphology, size variable, pine sawdust, photo-optical analysis, articles