Approach of Binder-Less Fibreboard Production from Steam-Exploded Hemp Shives and Wheat Straw
Tupciauskas, R., Rizhikovs, J., Andzs, M.
Steam explosion (SE) is one of the competitive technologies successfully introduced in the biorefinery platform capable to disrupt a lignocellulosic raw material to fibrous biomass with a self-bonding property. A huge quantity of agricultural residues like straw and woody shives are still available to be converted to value added products. The SE pretreatment was used in the study to convert raw wheat straw and hemp shives to fibrous biomass for binder-less fibreboard production. The crops were pretreated at SE conditions temperature (.)/time (min) of 200/1, 200/3, 220/2, 240/1 and 240/3. For the first-time the yield of the residual biomass was estimated and binder-less fibreboards obtained under the certain conditions varying SE temperature, fibre moisture content and size fraction, board density, pressing temperature and time. The results show that it is possible to obtain binder-less fibreboards from the SE crops with the physical-mechanical properties met the requirements for specified mechanical and swelling properties of non-load-bearing boards for use in humid conditions (EN 312 P3). The yield of the crops pre-treated at optimal SE conditions (220/2-240/1) was in the range of 87.4 – 82.0 % and 89.1 – 85.2 % for wheat straw and hemp shives, respectively.
hemp, panels, steam explosion, pulp, wheat straw, yield
Biomass Conversion to Intermediate Bioenergy Carriers, Sustainable Biofuels and Bio-Based Products
Bio-Based Chemicals and Materials
29th European Biomass Conference and Exhibition
906 - 910
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