Investigation of agro-byproduct pellet properties and improvement in pellet quality through mixing

Park, Sunyong; Kim, Seok Jun; Oh, Kwang Cheol; Cho, Lahoon; Kim, Min Jun; Jeong, In Seon; Lee, Chung Geon; Kim, Dae Hyun

doi:10.1016/j.energy.2019.116380

Cited by 31 publications

(18 citation statements)

References 10 publications

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“…The same problems of an excessive ash content, together with low durability and low LHV, were detected for rice husk pellets by Rios-Badran et al [65]. Regarding rice chaff, problems related to durability and an excess chlorine content were shown [66].…”

Section: Pure Feedstock For Pellet Productionmentioning

confidence: 62%

“…Jeguirim et al [71] analyzed spent coffee ground and coffee husk pellets, finding that they were high quality in terms of moisture, ash content, and LHV. However, Park et al [66] reported a consistent lack in quality regarding the bulk density, durability, chlorine content, and copper content of spent coffee ground pellets. These controversial results claim for further scientific investigation on this field, in order to better define the possibility of using this important residue for energy production.…”

Section: Pure Feedstock For Pellet Productionmentioning

confidence: 99%

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Pellet Production from Woody and Non-Woody Feedstocks: A Review on Biomass Quality Evaluation

Picchio

Latterini²,

Venanzi

et al. 2020

Energies

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Forest and agricultural biomass are important sources of renewable and sustainable fuel for energy production. Their increasing consumption is mainly related to the increase in global energy demand and fossil fuel prices but also to the limited availability of petroleum and the lower environmental impact of these biomass compared with other non-renewable fuels. In particular, the pellet sector has seen important developments in terms of both production and the number of installed transformation plants. In addition, pellet production from non-woody biomass is increasing in importance. One of the fundamental aspects for the correct and sustainable use of a biofuel is evaluation of its quality. This is even more important when dealing with pellet production, considering the broad spectrum of possible raw materials for pelletizing. Considering the significant number of papers dealing with pellet quality evaluation and improvement in the last decade, this review aims to give the reader an overall view of the most current knowledge about this large and interesting topic. We focused on pellets of agricultural and forestry origin and analyzed papers regarding the specific topic of pellet quality evaluation and improvement from the last five years (2016–2020). In particular, the review findings are presented in the following order: the influence of different agro-forest management systems on pellet quality; analysis of pellets from pure feedstocks (no blending or binders); the influence of blending and binders on pellet quality; and the influence of pre and post treatments. Finally, a brief discussion about actual research lacks in this topic and the possibilities for future research are presented. It is important to underline that the present review is focused on the influence of the biomass characteristics on pellet quality. The effects of the process parameters (die temperature, applied pressure, holding time) on pellet features are not considered in this review, because that is another very large topic deserving a dedicated paper.

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Section: Pure Feedstock For Pellet Productionmentioning

confidence: 62%

Section: Pure Feedstock For Pellet Productionmentioning

confidence: 99%

Pellet Production from Woody and Non-Woody Feedstocks: A Review on Biomass Quality Evaluation

Picchio

Latterini²,

Venanzi

et al. 2020

Energies

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“…They are spread in different tropical areas such as: South and Central America near the Amazon River, in Africa near the Congo River, South Asia in Peninsula Malacca, Malaysia, and the islands of Sonde, Sumatera, Java, Kalimantan, among others. Park et al(2020), sustain that the fast-growing tropical species such as Eucalyptus species used to produce energy have a reduced life cycle up to 15-35 years. Only about 25-45 % of the harvested wood is considered good quality raw material for processing in timber, veneer, furniture, parquet, the difference being classified as wood residues (Park et al 2020).…”

Section: Figurementioning

confidence: 99%

“…Tropical and sub-tropical species grows in zone with warm and moist climate, occupying 7% from global surface of globe, and 44% from the global forest area (Jasinskas et al 2020), being an important source of biomass. It is estimated that more than 40% of the oxygen produced in the world comes from these vegetal areas, which have undergone large-scale desertification in recent years, rapidly reducing this ecosystem around the world (Park et al 2020, Adam et al 2018. Generally is estimated that the wood volume of these species is higher than the temperate species but the overall wood density is lower due to the growing conditions (high air temperature and relative humidity), especially soil humidity (Jasinskas et al 2020, Park et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…It is estimated that more than 40% of the oxygen produced in the world comes from these vegetal areas, which have undergone large-scale desertification in recent years, rapidly reducing this ecosystem around the world (Park et al 2020, Adam et al 2018. Generally is estimated that the wood volume of these species is higher than the temperate species but the overall wood density is lower due to the growing conditions (high air temperature and relative humidity), especially soil humidity (Jasinskas et al 2020, Park et al 2020). The macroscopic structure shows the weak differences occurred in the growing areas during one year due to the rainy and dry season ( Figure 2).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the calorific values of wastes from some tropical wood species

Lunguleasa

Spirchez

Zeleniuc

2020

Maderas, Cienc. tecnol.

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The paper aims to analyze and classified some exotic wood species from tropical Africa, on regard to calorific features, in order to view the ability of their biomass to be a solid, natural and renewable fuel. The calorific values of wood wastes of eight tropical species were determined using an oxygen bomb calorimeter. The tested specimens were conditioned at a moisture content of 10%, 20%, and 50%. The influence of moisture content on calorific value and density, heat release rate and calorific efficiency were also analyzed. The biggest high calorific value and low calorific value were obtained by Guaiac and Rose species (21200-20700 kJ/kg). Acajou had the lowest values of high calorific value and low calorific value (18929 and 18456 kJ/kg, respectively). For higher wood density (Guaiac) the higher calorific density was obtained. The moisture content of specimens had negatively influenced the calorific efficiency and rate of energy release. The ash content was below 4% with highest values for Guaiac (3,6%) and the lowest for Acajou (0,5%). The results showed that the analyzed tropical wood species had a forest calorific capacity with 23-47% higher than of European beech, thus can be considered a good potential as renewable energy resources.

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Valorization of spent coffee ground by mixing with various types of residual biomass for pellet production: evaluation of solid biofuel properties at different mixtures

Kougioumtzis,

Filippou,

Rontogianni

et al. 2024

Biofuels Bioprod Bioref

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Coffee consumption is a daily habit for the majority of people worldwide, resulting in consistently large amounts of residue. Spent coffee ground (SCG) is the residue obtained during the brewing process. It represents an abundant source of energy biomass, or raw material for added value products but it is still largely unexploited. This residue may find several applications, such as in polymers/composites precursors, solid/liquid biofuels, biofertilizers, and so forth. The aim of the present paper was the pilot production of pellets by mixing SCG and other residual biomass feedstock. Coffee residues were mixed at different ratios (0, 10, 30, 50, 70, 90 wt%) together with: (i) forestry residues; (ii) sawmill residues; (iii) urban prunings; (iv) maize residues; (v) peach prunings; and (vi) miscanthus. Samples of each fuel mixture were analyzed at the Solid Fuels Laboratory of CPERI/CERTH (Chemical Process and Energy Resources Institute/Centre for Research and Technology Hellas) in Greece by applying established standards. The results of the analyses show that the mixing of biomass residues with coffee could result in competitive solid biofuels. More specifically, pellets with up to 10% coffee residues, mixed with sawmill residues, complied with the class A2 limits set by the international standard ISO 17225‐2 for wood pellets, and pellets with up to 30% coffee residues complied with the class B limits for wood pellets for commercial/residential applications. Urban prunings mixed with 10 wt% coffee residues are within the limits set for class B wood pellets.

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Investigation of agro-byproduct pellet properties and improvement in pellet quality through mixing

Cited by 31 publications

References 10 publications

Pellet Production from Woody and Non-Woody Feedstocks: A Review on Biomass Quality Evaluation

Pellet Production from Woody and Non-Woody Feedstocks: A Review on Biomass Quality Evaluation

Evaluation of the calorific values of wastes from some tropical wood species

Valorization of spent coffee ground by mixing with various types of residual biomass for pellet production: evaluation of solid biofuel properties at different mixtures

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