SIZE REDUCTION AND DENSIFICATION OF HERBACEOUS BIOMASS

Authors

  • Eriks Kronbergs Latvia University of Agriculture,
  • Mareks Smits Latvia University of Agriculture

DOI:

https://doi.org/10.17770/etr2005vol1.2134

Keywords:

herbaceous biomass, size reduction, densification

Abstract

Herbaceous biomass can be obtained using delayed harvesting method with moisture content less than 15% and directly densified without drying. Size reduction experiments of common reed stalks as cutting, flattening and densification have been carried out. As the result of reed stalk flattening, more than 8 strips can be obtained from this tubular structure. Average energy consumption 273 – 380 J kg-1 had been stated for reed stalk flattening. Specific cutting energy Escq value varies in 8 – 16 kJ m-2 in dependence of punch orientation angle according cross-section of reed specimen. Specific cutting energy for flattened stalk materials for reed density 600 kg m-3, varies Esc=13.3 – 27 J m kg-1. Densification experiments of compositions from peat particles, coarse wheat stalk and reed material particles from (1 - 2 mm) group with pressure 230 MPa indicated influence of peat proportion. Density 1.0 g cm-3 has been obtained in densification of straw stalk material particle compositions with peat, if peat proportion exceeds 20%.

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Author Biographies

  • Eriks Kronbergs, Latvia University of Agriculture,
    Institute of Mechanics, Faculty of Engineering
  • Mareks Smits, Latvia University of Agriculture
    Institute of Mechanics, Faculty of Engineering

References

Persson, S., 1987. Mechanics of cutting plant material. An ASAE Monograph Number 7.

The use of switchgrass biofuel pellets as a greenhouse gas offset strategy/Samson R., Drisdelle M, Mulkins L. etc.//http://www.reap-canada.com/Reports/bioenergy2000Aug2.html

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Published

2005-06-18

How to Cite

[1]
E. Kronbergs and M. Smits, “SIZE REDUCTION AND DENSIFICATION OF HERBACEOUS BIOMASS”, ETR, vol. 1, pp. 257–261, Jun. 2005, doi: 10.17770/etr2005vol1.2134.