Analysis of pelletizing from corn cob waste

Miranda, M.T.; Sepúlveda, Francisco José; Arranz, J.I.; Montero, I.; Rojas, C.V.

doi:10.1016/j.jenvman.2018.08.105

Cited by 59 publications

(32 citation statements)

References 24 publications

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“…Approximately 135 million tons of corncobs generated globally from 797 million tonnes (Mt) of corn production was reported in Muazu and Stegemann, [16]. Recent global production of corn puts the corn production estimate at 1031 million tonnes [17], with an expected increase in corncobs residue. Several studies have investigated the production and characterization of briquettes from corncob [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Production and Characterization of Hybrid Briquettes from Corncobs and Oil Palm Trunk Bark under a Low Pressure Densification Technique

et al. 2020

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The objective of this research was to investigate the quality of hybrid briquettes developed from corncobs (CC) and oil palm trunk bark (OPTB) under a low-pressure densification technique. The materials were combined in varying ratios of CC to OPTB (100:0, 75:25, 50:50, 25:75, 0:100) and wastepaper pulp (10% by weight) was added to each mixture as a binder. The briquettes were produced using a manually operated 20-tonne hydraulic piston press at 28 °C temperature and ≤7 MPa compaction pressure. The mechanical strength of the briquettes was determined by the drop test and compression test methods, while a bomb calorimeter was used to determine the calorific values. The results showed that the physical properties of hybrid briquettes ranged from 9.24–10.00% moisture content, 0.38–0.40 g/cm3 density, and 87.60%–92.00% water resistance. Mechanical strength showed a 98.28%–99.08% shatter index and 18.47–21.75 MPa compressive strength, while calorific values ranged from 16.54–16.91 MJ/kg. The hybrid briquettes fared better than the CC briquettes. The significance of this study lies in the production of briquettes with suitable physical, mechanical and thermal properties by utilizing OPTB which have hitherto not been used, mixed with corncobs. This could bring substantial environmental and socio-economic benefits to rural communities of the developing countries.

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Section: Introductionmentioning

confidence: 99%

Production and Characterization of Hybrid Briquettes from Corncobs and Oil Palm Trunk Bark under a Low Pressure Densification Technique

et al. 2020

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“…In recent years, some novel pellets made from different biomass residues such as beech sawdust [11], Scenedesmus microalgae [12], canola hull mixed meal [6], corncobs [13,14], wheat straw [15], and coir fibers [16] have been investigated, and those studies focused on how the characteristics and quality of the pellets (bulk density, mechanical durability, energy consumption, and net calorific value [17,18]) can be influenced by various factors related to the raw material (chemical composition, moisture content [16], and production process (pressure, temperature [14]). Response surface methodology (RSM) is one of the most popular methods for parameter optimization of pelletization and has been extensively studied [19,20].…”

Section: Introductionmentioning

confidence: 99%

Pelletization of Sunflower Seed Husks: Evaluating and Optimizing Energy Consumption and Physical Properties by Response Surface Methodology (RSM)

et al. 2019

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Pelletization is a significant approach for the efficient utilization of biomass energy. Sunflower seed husk is a common solid waste in the process of oil production. The novelty of this study was to determine the parameters during production of a novel pellet made from sunflower seed husk. The energy consumption (W) and physical properties (bulk density (BD) and mechanical durability (DU)) of the novel pellet were evaluated and optimized at the laboratory by using a pelletizer and response surface methodology (RSM) under a controlled moisture content (4%–14%), compression pressure (100–200 MPa), and die temperature (70–170 °C). The results show that the variables of temperature, pressure, and moisture content of raw material are positively correlated with BD and DU. Increasing the temperature and moisture content of raw materials can effectively reduce W, while increasing the pressure has an adverse effect on W. The optimum conditions of temperature (150 °C), pressure (180 MPa), and moisture content (12%) led to a BD of 1117.44 kg/m3, DU of 98.8%, and W of 25.3 kJ/kg in the lab. Overall, although the nitrogen content was slightly high, the novel manufactured pellets had excellent performance based on ISO 17225 (International Organization for Standardization of 17225, Geneva, Switzerland, 2016). Thus, sunflower seed husk could be considered as a potential feedstock for biomass pelletization.

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“…Emisije za dizel gorivo iznose 93,9 gCO 2ekv MJ -1 , a potrošnja goriva za transport 0,811 MJ t -1 km -1 [12]. Električna energija potrebna za drobljenje i peletiranje oklaska iznosi 20 i 80 kWh tVM -1 (VM -vlažna masa), respektivno [13]. Emisioni faktor za elektroenergetski sistem u RS iznosi 275,3 gCO 2ekv MJ -1 [14], a efikasnost energetske transformacije 0,535 [15].…”

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