Moisture content and storage time influence the binding mechanisms in biofuel wood pellets

Samuelsson, Robert; Larsson, Sylvia H.; Thyrel, Mikael; Lestander, Torbjörn A.

doi:10.1016/j.apenergy.2012.05.004

Cited by 113 publications

(64 citation statements)

References 11 publications

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“…In both cases, the decline was proportional over the whole range of moisture tested. Water is found to be the most important factor influencing pellet properties (Kaliyan & Morey, 2009;Laskowski et al, 2005;Nielsen et al, 2009;Samuelsson, Larsson, Thyrel, & Lestander, 2012). It can act as a lubricant that lowers the friction in the die resulting in low bulk density and as a binding agent that affects mechanical properties (Kaliyan & Morey, 2009).…”

Section: Pelletingmentioning

confidence: 94%

Prediction of pelleting outcomes based on moisture versus strain hysteresis during the loading of individual pea seeds

Kulig

Łysiak

Skonecki

2015

Biosystems Engineering

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Section: Pelletingmentioning

confidence: 94%

Prediction of pelleting outcomes based on moisture versus strain hysteresis during the loading of individual pea seeds

Kulig

Łysiak

Skonecki

2015

Biosystems Engineering

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“…The water also worked as a binder and strengthened the durability, but for this test series, the water content in the inlet material and in the produced pellets was almost constant (Table 1). Samuelsson et al (2012) showed that the durability has low sensitivity for changes in moisture content for wood pellets produced from fresh sawdust. As the moisture content cannot explain the differences in durability, the differences were due to the sugars that affect bonding during pelletising.…”

Section: Fig 1 Pellet Production Unit At Karlstad Universitymentioning

confidence: 99%

Improvement of Wood Fuel Pellet Quality Using Sustainable Sugar Additives

Ståhl¹,

Berghel²,

Granström³

2016

BioResources

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The global production and use of wood fuel pellets has increased significantly in recent years. The raw material and the energy required to dry it are the main production costs. Therefore, it is crucial to minimize energy consumption, production costs, and the environmental impact associated with wood pellets. However, these changes should not negatively affect the quality of the pellets. One way to achieve these goals is to use additives. This work investigates how different types of sugar additives affect both the energy needed by the pellet press and the durability and oxidation of the produced pellets. When sugar was used as an additive, the energy use was practically unaffected. When molasses and SSL were added, a small decrease in energy use was observed (6 to 8%) for admixtures up to 1 wt.%; however, when more molasses was added, the energy use increased. Using these additives increased the bulk density (7 to 15 %) and durability (10 to 20 %) of the pellets. The storage of the pellets also caused a small increase in durability (1 to 3 %). Volatile organic compounds were produced as oxidation peaks within the first two months of storage; thereafter, the peaks tapered off.

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“…In this paper, pellet density and diametric compression strength were also used as the two indexes to evaluate the quality of WH pellets produced with different process parameters. During the densification of most biomass, the optimal moisture content of the raw material is between 8% and 16%, and the optimal process temperature is between 80 and 120 °C (Kashaninejad and Tabil 2011;Stelte et al 2011;Samuelsson et al 2012;Ståhl et al 2012). The center points and the edge points of the two process parameters were included in this study, such that the five variations in moisture content and temperature tested were 8%, 10%, 12%, 14%, and 16% and 80, 90, 100, 110, and 120 °C, respectively.…”

Section: Preparation Of Pelletsmentioning

confidence: 99%

“…Biomass sources with different chemical compositions require different process parameters for their densification (Kashaninejad and Tabil 2011;Stelte et al 2011;Samuelsson et al 2012;Ståhl et al 2012). Moisture content and temperature are two important process parameters that greatly influence the quality of biomass fuel pellets.…”

Section: Introductionmentioning

confidence: 99%

Effects of Moisture Content and Temperature on the Quality of Water Hyacinth Pellets

Xia¹,

Zong-shou²,

Zhang³

et al. 2015

BioResources

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Moisture content and temperature are two important process parameters that greatly influence the quality of biomass pellet fuels. The moisture content of raw material was varied at five levels (8%, 10%, 12%, 14%, 16%) to test its effect on water hyacinth pellet density and diametric compression strength. The experimental conditions included a compressing force of 6 kN, hammer mill screen size of 2 mm, and temperature of 100 °C. Five temperature conditions (80, 90, 100, 110, and 120 °C) were studied under the same conditions and 12% moisture content. In these conditions, the optimal moisture contents for water hyacinth pellet density and diametric compression strength were 12.2% and 11.5%, respectively, and the optimal temperatures were 100.4 °C and 104.3 °C, respectively.

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Moisture content and storage time influence the binding mechanisms in biofuel wood pellets

Cited by 113 publications

References 11 publications

Prediction of pelleting outcomes based on moisture versus strain hysteresis during the loading of individual pea seeds

Prediction of pelleting outcomes based on moisture versus strain hysteresis during the loading of individual pea seeds

Improvement of Wood Fuel Pellet Quality Using Sustainable Sugar Additives

Effects of Moisture Content and Temperature on the Quality of Water Hyacinth Pellets

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