The present study aimed to determine the effect of material modification by hot water extraction (HWE) on the compaction efficiency of shredded stalks in the pellet production process. Samples were prepared to differ in the number of HWE cycles: HWE I was subjected to a single cycle, HWE II was subjected to two cycles, and HWE III was subjected to three cycles and unmodified material. An analysis of the compaction process was carried out to evaluate the effect of HWE on density and energy consumption.
View Article and Find Full Text PDFThis study investigates lignocellulosic biocomposites' physicochemical properties and strength parameters with varying thermoplastic content. Biocomposites were prepared using wood () or hemp shives ( L.) combined with 25% and 50% ABS regranulate.
View Article and Find Full Text PDFThe mechanical strength of wood from Scots pine (), European larch (), and Norway spruce () was studied using static compression tests. The material was exposed under constant soaking in water with salinity of 7‱. The liquid mix was prepared according to a value roughly equivalent to the average salinity along the entire length of the Baltic Sea.
View Article and Find Full Text PDFWood-plastic composites (WPCs) represent composite materials that employ shredded wood combined with a thermoplastic substance, such as polylactic acid (PLA), to establish structural cohesion within the product profile. This amalgamation of materials results in a robust structure designed to fulfill specialized roles under the influence of pressure and temperature. Given the nature of the constituent materials, the resultant product can be classified as a biocomposite.
View Article and Find Full Text PDFIn this paper, the differences in mechanical strength tested during the static tensile and compression test of Scots pine ( L.), European larch () and Norway spruce () wood exposed to continuous soaking in water with a salinity of 7‱ were determined. The value of salinity corresponded to the average salinity on the Polish Baltic coast.
View Article and Find Full Text PDFThe rapid development of agricultural technologies has triggered new possibilities of using plant waste as fuel. Briquetting plant material is one of the methods of using crop residue as permanent energy carriers. Nevertheless, to maintain the normalised properties of briquettes, their small-scale production should follow an established and well-considered deliberate technological process limiting production costs.
View Article and Find Full Text PDFThe aim of the study was to present the scale of greenhouse gas emissions from animal production, and to provide test results from different housing systems. In three free stall buildings, two with slurry in deep channels and one with cattle in cubicles staying on shallow litter concentration of ammonia and carbon dioxide were measured in summer season by using dedicated equipment from Industrial Scientific Research. Air exchange was calculated on the base of balance carbon dioxide method.
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