The Effect of Bakery Waste Addition on Pine Sawdust Pelletization and Pellet Quality

Obidziński, Sławomir; Szyszlak-Bargłowicz, Joanna; Zając, Grzegorz; Kowczyk-Sadowy, Małgorzata; Krasowska, Małgorzata; Sienkiewicz, Aneta; Cwalina, Paweł; Faszczewski, Damian; Wasilewski, Jacek

doi:10.3390/en17020523

Cited by 4 publications

(1 citation statement)

References 51 publications

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“…The calorific value of pine sawdust in its dry state was the highest and amounted to 18.98 MJ•kg −1 ; in the analytical state (analytical moisture 11.62%), it was 17.48 MJ•kg −1 . This value is similar to that reported in the literature [53]. In the case of elderberry waste, the dry calorific value was 18.00 MJ•kg −1 , while in the analytical state (analytical moisture 8.87%) it was the lowest at 16.20 MJ•kg −1 .…”

Section: Heat Of Combustion and Heating Value Of Raw Materialssupporting

confidence: 90%

Effect of the Addition of Elderberry Waste to Sawdust on the Process of Pelletization and the Quality of Fuel Pellets

Obidziński,

Cwalina,

Kowczyk-Sadowy

et al. 2024

Energies

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This paper presents the results of a study on the process of the pelletization of pine sawdust with the addition of herbaceous waste from elderberry, in the working system of a pellet press with a flat matrix, in the context of producing fuel pellets. Based on the research, the impact of the addition of herbal waste in the form of elderberry waste on the granulation process of pine sawdust and the assessment of the quality of the obtained pellets were determined. The addition of herbaceous waste from elderberry to pine sawdust had a beneficial effect on the kinetic durability of the obtained fuel pellets, with an increase of up to approximately 1.3% (from 98.03 to 99.31%). Based on the obtained results, it can be concluded that the mechanical strength of all the tested pellets is higher than 97.5%, which is consistent with the ISO 17225-1:2021-11 standard. The bulk density of pellets with the addition of herbaceous waste from elderberry increased (from 649.34 to 658.50 kg∙m−3) as did their density (from 1231.38 to 1263.90 kg∙m−3). The addition of herbaceous waste from elderberry in amounts ranging from 10% to 20% did not have a significant effect on the power requirements of the pelletizer, which decreased compared to the pelletization process of pure pine sawdust. The percentage of this decrease compared to the pelleting process with pure pine sawdust was approximately 10%. The addition of herbaceous waste from elderberry to pine sawdust slightly reduces the energy value (i.e., the heat of combustion and the calorific value) of the obtained pellets. The addition of 30% elderberry waste resulted in a decrease in the heat of combustion from 20.27 to 19.96 MJ·kgd.m.−1, while the calorific value of the pellets decreased from 19.98 to 18.69 MJ·kgd.m.−1 compared to pine sawdust pellets. Hence, adding herbaceous waste from elderberry seems to be a good way of managing large amounts of waste of this kind generated in herbal processing plants. This method of waste management opens new perspectives towards more sustainable and economically effective energy production.

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Section: Heat Of Combustion and Heating Value Of Raw Materialssupporting

confidence: 90%

Effect of the Addition of Elderberry Waste to Sawdust on the Process of Pelletization and the Quality of Fuel Pellets

Obidziński,

Cwalina,

Kowczyk-Sadowy

et al. 2024

Energies

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Optimizing production conditions of innovative bio-pellets developed from flax straw

Zamiri,

Nikkhah Dafchahi,

Ebadian

et al. 2024

Industrial Crops and Products

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Physical and Energy Properties of Fuel Pellets Produced from Sawdust with Potato Pulp Addition

Obidziński,

Cwalina,

Kowczyk-Sadowy

et al. 2024

Energies

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This paper presents the findings of a study of the pelleting process of pine sawdust with the addition of waste in the form of potato pulp (as a natural binder), in the context of producing fuel pellets. The process of pelleting was carried out for sawdust and for a mixture of sawdust and potato pulp (10, 15, 20, and 25%). The highest moisture content was obtained in the case of pellets produced from a mixture of straw with a 25% potato pulp content, i.e., 26.54% (with a potato pulp moisture content of 85.08%). Increasing the potato pulp content in a mixture with sawdust from 10 to 25% reduced the power demand of the pelletizer by approx. 20% (from 7.35 to 5.92 kW). The obtained density values for pellets made from a mixture of sawdust and potato pulp (over 1000 kg∙m−3) with a potato pulp content of 10% make it possible to conclude that the obtained pellets meet the requirements of the ISO 17225-2:2021-11 standard. Increasing the potato pulp content from 0 to 25% caused a slight decrease in the heat of combustion, i.e., from 20.45 to 20.32 MJ∙kg−1, as well as in the calorific value, from 19.02 to 18.83 MJ∙kg−1 (both for dry sawdust matter and the mixture). The results of the laboratory tests were used to verify the densification process of mixtures of sawdust and potato pulp under industrial conditions at the PANBAH plant, using pelleting mixtures with a 5%, 10%, and 25% content of potato pulp. Industrial research also confirmed that the use of the addition of potato pulp in a mixture with sawdust significantly reduces the power demand of the pelletizer, and it also increases the kinetic strength of the obtained pellets.

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The Effect of Bakery Waste Addition on Pine Sawdust Pelletization and Pellet Quality

Cited by 4 publications

References 51 publications

Effect of the Addition of Elderberry Waste to Sawdust on the Process of Pelletization and the Quality of Fuel Pellets

Effect of the Addition of Elderberry Waste to Sawdust on the Process of Pelletization and the Quality of Fuel Pellets

Optimizing production conditions of innovative bio-pellets developed from flax straw

Physical and Energy Properties of Fuel Pellets Produced from Sawdust with Potato Pulp Addition

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