Factors affecting the quality of pellets made from residual biomass of olive trees

García-Maraver, Ángela; Rodríguez, Ma Paloma González; Bernardo, Francisco Serrano; Dı́az, Luis F.; Zamorano, M.

doi:10.1016/j.fuproc.2014.08.018

Cited by 84 publications

(56 citation statements)

References 32 publications

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“…Most of them are empirical and some others were developed based on rheological models. There are also several experimental studies that test the pelletizing properties of different raw materials [9][10][11][12][13][14]. In all these studies, the pelletizing conditions (moisture content, particle size, die temperature, compression pressure…) are changed and their influence on pellet quality (density, HHV -higher heating value, durability, compression strength, hydrophobicity…) is evaluated.…”

Section: Introductionmentioning

confidence: 99%

From a single pellet press to a bench scale pellet mill — Pelletizing six different biomass feedstocks

Puig-Arnavat

Shang

Sárossy

et al. 2016

Fuel Processing Technology

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Section: Introductionmentioning

confidence: 99%

From a single pellet press to a bench scale pellet mill — Pelletizing six different biomass feedstocks

Puig-Arnavat

Shang

Sárossy

et al. 2016

Fuel Processing Technology

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“…To improve its energetic characteristics, the densification of biomass is performed in cylinders called pellets, which are made of pulverized wood or agriculture biomass residues with or without additives, resulting in increased energy density [2][3][4]. The regular geometry and standard size of pellets (generally with diameters between 6-10 mm and lengths of 5-40 mm) [5] allow compact storage, reducing handling and transport costs and allowing automatic feeding in large-scale unit operations [3,4,6].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, moisture content, density, and particle size also influence the energy efficiency [24]. Moreover, feedstock moisture content has an impact on pellet density and durability [6,15,[25][26][27] and influences net calorific value and combustion efficiency [4,28]. The particle size distribution of the raw material can impact the pellet compression strength [25,[29][30][31], durability [32][33][34][35][36], and pellet consumption rates [31].…”

Section: Introductionmentioning

confidence: 99%

The Bioenergetic Potential of Four Oak Species from Northeastern Mexico

Núñez-Retana

Wehenkel

Vega-Nieva

et al. 2019

Forests

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Lack of knowledge regarding the fuel quality of diverse tree species prevents their use. Furthermore, the potential use of wood with the bark of different tree species for pellet production is still relatively unexplored in the scientific literature. In Mexico, the sawdust of Quercus genus (oak) is underutilized, despite it being an important forest resource, due to some anatomical and technological characteristics. The sawdust of Quercus with bark is also considered to have a low economic value. The objective of this study was to analyze the energy characteristics of barked and debarked Quercus sideroxyla, Q. rugosa, Q. laeta, and Q. conzattii in order to evaluate their potential for pellet production. Granulometric distribution, bulk density, proximal analysis, and calorific value tests were carried out. The sawdust of the four tree species studied was in accordance with the limits established by the standard EN 14961-2. Sawdust with a particle size of 0.425 mm had the highest percentage of retained mass (30.33%) (p < 0.05) in the granulometry test. There were no statistical differences in granulometry (p > 0.05) between barked and debarked sawdust for all Quercus species. Barked sawdust presented higher bulk density (p < 0.05) than debarked sawdust (246 and 224 kg/m3, respectively). The moisture content did not show statistical differences (p > 0.05) between barked and debarked sawdust. The volatile material was higher (p < 0.05) in debarked sawdust (88.7%) than in barked sawdust (85.0%). The ash content was below 0.5%. The fixed carbon was higher (p < 0.05) in barked sawdust (14.6%). The calorific value was higher (p < 0.05) in barked sawdust and for the Q. rugosa species (19.5 MJ/kg). The results suggest that the oak species analyzed, both barked and debarked, showed good potential for pellet production. Future studies should quantify fuel quality for a variety of diameter distributions, and analyze pellet mechanical properties and ash slagging risk.

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“…Pakistan's energy structure is still under-developed, insufficient and poorly managed; leads to develop an energy system with more renewable energy matrix, reduction of greenhouse gases and meets the Montreal protocol. Biomass is one of the most important renewable energy source, can be used due to their attractive properties like low production cost, low acid gas emission and no net carbon dioxide (Jiang et al, 2014;Garcia-Maraver et al, 2015). These are available in bulk quantities and their primary sources are agricultural residues, forest products, energy crops and unplanned municipal solid waste (MSW).…”

Section: Introductionmentioning

confidence: 99%

Refused derived fuel pellets from municipal solid waste and rice husk

Iqbal

Nadeem

Butt

2019

Bangladesh J. Sci. Ind. Res.

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The objective of this study was to optimize the parameters for the development of refused derived fuel (RDF) pellets from municipal solid waste (MSW) and rice husk by using Response Surface Methodology (RSM). In this a systematic study was conducted, where three parameters were varied according to RSM factorial design. The binder concentration (5-10%) pressure (700-1200 psi) and retention time (3-7 minutes) were used for RDF pellet development under hydraulic press, measured hardness bulk density (BD) and durability (DU). The T 3 treatment results revealed the highest pellet hardness, bulk density, and durability 25 kg, 805 kg/m 3 , 99% respectively by application binder concentration (5%), pressure (1200 psi) and retention time (5 minutes). The experimental data on response variables were fitted into quadratic polynomial model using the multiple regression analysis and found that it was statistically significant quadratic model. The RDF physical chemical and mechanical characteristics were also evaluated and found their relationship between HHV, carbon, ash, DU, BD and energy density. The ash contents were inversely proportional to DU and HHV whereas DU was directly related to BD.

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Factors affecting the quality of pellets made from residual biomass of olive trees

Cited by 84 publications

References 32 publications

From a single pellet press to a bench scale pellet mill — Pelletizing six different biomass feedstocks

From a single pellet press to a bench scale pellet mill — Pelletizing six different biomass feedstocks

The Bioenergetic Potential of Four Oak Species from Northeastern Mexico

Refused derived fuel pellets from municipal solid waste and rice husk

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