The effect of raw material moisture and particle size on agri-pellet production parameters and physical properties: A case study for greenhouse melon residues

Yılmaz, Hasan; Çanakcı, Murad; Topakçı, Mehmet; Karayel, Davut

doi:10.1016/j.biombioe.2021.106125

Cited by 21 publications

(13 citation statements)

References 51 publications

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“…Furthermore, different initial moisture contents did not have a significant effect on the abrasive resistance of both the raw and torrefied pellets. Nevertheless, it is seen that the obtained results are compatible with the literature and the RPS, RDW, torrefied RPS, and torrefied RDW pellets maintain their integrity at an average of 99.89%, 99.96%, 99.72%, and 99.74% (impact resistance), respectively [55]. In the torrefaction process, the hemicellulose is mainly responsible for the mass loss of biomass [56].…”

Section: Abrasive Resistance and Tensile Strength Of The Raw And Torr...supporting

confidence: 85%

Quality Properties and Torrefaction Characteristics of Pellets: Rose Oil Distillation Solid Waste and Red Pine Sawdust

Önür,

Ekinci,

Civan

et al. 2023

Sustainability

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Two different biomass types, rose oil (Rosa damascena Mill.) distillation solid wastes (RDWs) and red pine sawdust (RPS), were pelletized in this study at different moisture and additives. The prepared pellets were also torrefied. This study revealed that the strength of the RPS and RDW pellets decreased as their moisture content increased in both their raw and torrefied forms. However, the tensile strength of the torrefied pellets increased with the increased binder ratio, which is similar to raw pellets. Compared to their raw form, the torrefied pellets generally had higher ash contents, fixed carbon contents, and higher heating values. As a result of torrefaction, the higher heating value of the RPS pellets increased from 17.51–18.80 MJ/kg to 20.20–21.73 MJ/kg, while the higher heating value of the RDW pellets increased from 17.42–18.54 MJ/kg to 19.13–20.92 MJ/kg. For the torrefied RPS and RDW pellets in this study, there was no statistically significant difference between initial moisture content and energy efficiency, energy density, or mass yield. On the other hand, energy density ratios in both the torrefied RPS and torrefied RDW pellets generally increased with increasing binder content. Furthermore, the torrefied pellets were found to be more stable in moisture absorption than the raw pellets.

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Section: Abrasive Resistance and Tensile Strength Of The Raw And Torr...supporting

confidence: 85%

Quality Properties and Torrefaction Characteristics of Pellets: Rose Oil Distillation Solid Waste and Red Pine Sawdust

Önür,

Ekinci,

Civan

et al. 2023

Sustainability

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“…However, the measurement values were observed to be all below the mandatory standard, though the obtained results were within the reported values for straw pellets [2]. Previously published research proved the bulk density of pellets from greenhouse melon harvest waste to be higher than 667 kg/m 3 [12]. Found the maximum bulk density of 350 kg/m 3 for tomato waste pellets [17].…”

Section: Pellet Characterizationsupporting

confidence: 63%

“…These values are close to the ones obtained for the raw materials, indicating the equilibrium moisture contents of specific materials. Low moisture content is very important to ensure good combustion [12], handling, storage, and transportation [3].…”

Section: Pellet Characterizationmentioning

confidence: 99%

“…The low density of these biomass resources is a significant limitation for efficient handling, transportation, and possible valorization methods. Pelletizing these biomasses by applying pressure can increase the bulk density by 4 to 5 times [12]. The densified biomass provides a definite size and shapes with higher individual pellet and bulk densities.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of the potential of greenhouse post-harvest wastes for bioenergy production and utilization for heating and carbon dioxide application

Sen

2022

Environmental Research and Technology

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In this study, raw biomass feedstock characterization of greenhouse post-harvest residues of tomato, pepper, and eggplant has been investigated using the wastes of stem and leaves as a source of energy gained from palletization. The characterization was compared to both sawdust and the relevant ISO and EU pellet standards. The proximate and ultimate analyses results of all the tested feedstock materials have proven to be successful candidates for pelletizing and combustion process. The bulk density of tomato, pepper, and eggplant pellets were found to be 568 kg/m3, 575 kg/m3, 589 kg/m3, respectively, and the higher heating values of these produces were found to be 17.25 MJ/kg, 17.45 MJ/kg, and 17.80 MJ/kg, respectively. Based on the results, it is possible to generate 10 tons of waste per hectare capable of producing almost 50 MWh of heating energy. Furthermore, this waste could generate more than 6.5 tons of CO2 per hectare. The study results suggest that the heating energy potential and the amount of CO2 emitted could be used in greenhouses to support photosynthesis during low temperature and low solar radiation periods.

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“…When crushed by pulverization, they offer substantial resistance to the rotating blades. Optimizing the crushing efficiency and uniformity of tomato stalks is essential to enhance resource utilization [2]. Therefore, studying the mechanical properties of tomato stalks aids in the design of straw harvesters and provides crucial theoretical data.…”

Section: Introductionmentioning

confidence: 99%

Discrete Element Model Building and Optimization of Tomato Stalks at Harvest

Gao,

Cheng,

Wang

et al. 2024

Agriculture

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The mechanical properties of tomato stalk, relevant to the harvesting and crushing of tomato vines, significantly impact its harvesting quality and efficiency. Establishing a simulation model, which accurately mirrors these properties, is foundational for designing related mechanical components. The discrete element method models tomato stalk harvesting and is optimized through mechanical tests and simulations. A blend of Plackett–Burman, steepest ascent, and central composite design modeling identified three contact model parameters influencing the maximum stalk shear force. The optimal values of these three parameters were a normal stiffness of 1.04 × 1010 N m−3, tangential stiffness of 7.59 × 109 N m−3, and bond radius of 1.06 mm. The relative error in the simulated versus measured shear force was <1%, affirming the model’s accuracy in characterizing cutting properties. These findings lay the theoretical groundwork for numerical simulations of tomato-stalk-related equipment.

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The effect of raw material moisture and particle size on agri-pellet production parameters and physical properties: A case study for greenhouse melon residues

Cited by 21 publications

References 51 publications

Quality Properties and Torrefaction Characteristics of Pellets: Rose Oil Distillation Solid Waste and Red Pine Sawdust

Quality Properties and Torrefaction Characteristics of Pellets: Rose Oil Distillation Solid Waste and Red Pine Sawdust

Investigation of the potential of greenhouse post-harvest wastes for bioenergy production and utilization for heating and carbon dioxide application

Discrete Element Model Building and Optimization of Tomato Stalks at Harvest

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