• Eriks Kronbergs Latvia University of Agriculture (LV)
  • Mareks Smits Latvia University of Agriculture (LV)




biofuel compositions, herbaceous biomass shredding


The 2003 reform o f the EU Common agricultural policy stimulates farmers to grow more energy crops, including short rotation coppice and other perennial crops. Peat can be used as additive for manufacturing o f solid biofuel, because it improves density, durability o f stalk material briquettes (pellets) and avoid corrosion o f boilers. For these reason herbaceous biomass compositions with peat fo r solid biofuel production is recommended. The main conditioning operation before biomass compacting is shredding. It was stated that common reed stalk material particle size reduction during cutting (shredding) process increased energy consumption very significantly. The calculation o f energy consumption fo r common reed cutting to sizes 0.6 and 0.5 mm was giving results 31.3 k J kg'1 and 43.5 k J kg'1. The shredder cutter bar has to be designed with friction energy losses decreased to minimum. This aim can to be realized by reducing o f area o f cutter bar knives moving into stalk biomass and minimizing biomass pressure (Patent LV13447) on cutter bar.


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Kronbergs E. Mechanical strength testing of stalk materials and compacting energy evaluation. Industrial Crops and Products, Elsevier Science B. V., 11 (2000)211-216

Pahkala K., Pihala M. Different plant parts as raw material for fuel and pulp production , Elsevier Science B. V., 1 1 (2000) 119-128

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

Srivastava A.K., Goering C.E., Rohrbach R.P. Engineering principles of agricultural machines. ASAE Textbook Number Pamela De Vore-Hansen, Editor, Books&Journals. 1993. p. 601

Mani S, Tabil LG, Sokhansanj S. Grinding performance and physical properties of wheat and barley straws, corn stower and switchgrass. Biomass and Bioenergy 2004; 27; 339-52




How to Cite

E. Kronbergs and M. Smits, “HERBACEOUS BIOMASS SHREDDING FOR BIOFUEL COMPOSITIONS”, ETR, vol. 1, pp. 31–35, Jun. 2007, doi: 10.17770/etr2007vol1.1725.