Investigation of some Properties of Bio-coal Briquettes Produced using Beniseed (Sesame seed) Stalks as Biomass

Guusu, Harry Iorwuese; Edeoja, Alex Okibe; Ibrahim, J. S.

doi:10.9734/cjast/2021/v40i231261

Cited by 6 publications

(12 citation statements)

References 23 publications

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“…These variations in results compared to other literature values be explained by the variations in binder type, concentration, feedstock material and the species of the feedstock. However, the values obtained are favourably comparable with good quality briquettes reported in literature (Guusu et al, 2021). Due to the extraction of some percentages of extraneous materials by soaking, there is a slight increase in volatile matter contents of the fermented briquettes (69.03%) compared with (67.74%) of the untreated briquettes.…”

Section: Briquettes Proximate Analysissupporting

confidence: 86%

Effects of Binder Concentrations and Soaking Time on Combustion Characteristics of Briquettes Produced from Fermented Gmelina Arborea (Roxb) Sawdust and Used Print Paper

Bello¹,

Olorunnisola²,

Omoniyi³

et al. 2022

bes

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Low-density briquettes are known for having several undesirable characteristics, such as an intense yellow flame and smokiness that are too high for domestic applications. The pretreatment of feedstock has been identified as a tool for addressing these issues; however, process costs and variability conditions has significant impact on the selection and performance of these methods. Consequent on these, fermentation method was employed to investigate the effects of binder concentration and soaking time on briquettes produced from fermented G. arborea sawdust and used print paper binder in this work. Untreated sawdust samples were collected from sawmill's dumpsite and soaked for 12, 24, 36, and 48 hours under mesophilic and anaerobic conditions while used print paper were converted into pulped fiber. Briquette mix ratio by percentage weight proportions varied from (10:90-50:50) % dry basis. A statistical analysis of briquette densities revealed a significant positive correlation between the densities of fermented briquettes and the binder concentration at (p<0.05). Thermal efficiency decreased with increase in binder concentration with no significant difference in fermentation time, while the specific fuel consumption increased with increase in binder concentration. Fermentation time and binder concentration slightly improved the combustion characteristics of briquettes. Economic analysis suggested economic viability of the process.

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Section: Briquettes Proximate Analysissupporting

confidence: 86%

Effects of Binder Concentrations and Soaking Time on Combustion Characteristics of Briquettes Produced from Fermented Gmelina Arborea (Roxb) Sawdust and Used Print Paper

Bello¹,

Olorunnisola²,

Omoniyi³

et al. 2022

bes

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“…The ash content expressed in percentage implied the amount of material remaining after biomass material had been burnt The ash contents of torrefied used printing paper briquettes range from (13.10-14.0%), for newsprint, its value range from (10.95-15.01%). These values are favorably comparable with good quality briquettes 45,46 . For example, Faizal et al 45 recommended a maximum value of 4% and DIN 51731 recommended a minimum value of 0.7%.…”

Section: Briquettes Proximate and Ultimate Analysis Proximate Analysissupporting

confidence: 61%

Combustion Characteristics of Briquettes Produced from Three Binders and Torrefied Gmelina arborea (Robx.) Sawdust

Bello,

Olorunnisola,

Omoniyi

et al. 2023

Trends Appl. Sci. Res

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Background and Objective: Considering the energy potential of briquettes, there are several undesired harmful qualities such as intense yellow flame and smoke. Torrefaction was deemed a suitable technological solution, therefore, the study investigated the combustion properties of briquettes made from Gmelina arborea sawdust and three binders used print paper (UPP), newsprint (Np) and clay (CL). Materials and Methods: Experiments were conducted using a hydraulic press and a biomass stove. The 3 torrefied feedstock samples (TS 30, TS 45 and TS 60 min) were mixed with binders at 10, 20, 30, 40 and 50% w/w at 1.67 kPa applied pressure and 5 min residence period to produce briquettes. The results were statistically analyzed at significance level using ANOVA. Results: Briquette densities decreased with an increase in torrefaction time with strong positive correlations between densities of the same binder type, concentration and torrefaction time. An increase in binder concentration enhanced the combustion characteristics of UPP and Np briquettes positively, with significant negative effects on CL briquettes. Torrefied used printing paper briquette burns with non-luminous flame and reduced smokiness as binder concentration increases, while newsprints briquette produced excessive smokes. Briquettes produced from used printing papers at 45 min torrefaction had better performances in terms of energy values, product flammability and reduced smokiness. Clay-bonded briquettes had delayed ignition 7-10 min and failed to burn with flame, rather than by char combustion. Conclusion: Torrefaction time, binder type and concentration had significant positive effects on the combustion characteristics. Clay had poor effects on combustion characteristics.

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“…The proximate analysis showed a percentage ash contents of 14.25%, volatile matter contents of 69.03% and fixed carbon contents of 6.77%. These results showed high concentrations of non-combustible materials resulting in low fixed carbon and calorific values which were higher than the recommended maximum value of 4% 62 . However, the maximum value of 14.25% obtained in this study was lower than the 13.78% obtained by Jittabut et al 63 who provided a justification for the value obtained that the biomass and binder materials used for the experiment had different attributes and process conditions.…”

Section: Proximate Analysismentioning

confidence: 76%

Development of a Multiple-Piston Hydraulic Briquetting Press HBP and Characterization of Newsprint Briquettes Produced

Segun,

Olajide,

Temidayo

et al. 2023

Trends Agric. Sci

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Background and Objective: Technical complexity, power source, cost, and product value are some challenging considerations in briquetting. Most of the available briquetting options are not sustainable due to these challenges, therefore, improved intermediate technology options requiring low energy consumption, high-energy product and acceptable combustion characteristics to meet these challenges are justified by developing a multiple-piston hydraulic briquetting press (HBP) and characterizing the briquettes produced from Gmelina arborea sawdust and newsprint binder. Materials and Methods: Sorted Gmelina arborea sawdust was mixed with pulped newsprint fibers in 5 ratios 10, 20, 30, 40 and 50%, respectively, to produce briquettes. The briquettes were characterized using American Society for Testing and Materials (ASTM), British Standard (BS), and International Standards Organization (ISO) test procedures to determine briquette characteristics. Results: The machine output capacity was 96 briquettes/hour, with low production cost (NGN40, 000.00). The briquettes produced are structurally stable with dimensions: 15.00 mm internal hole, 80.00 mm external diameter, and 60.00 mm height. Low binder briquettes (90:10% wt/wt) are fragile and brittle, while higher binder briquettes are strong and durable. Binder concentration positively improves the combustion characteristics, while the time spent cooking 1 kg of yam is not significantly different for rice. The briquettes thermal efficiency in stove was significantly affected by binder concentration and stove characteristics. Conclusion: The outcomes of this study including high machine output capacity, briquettes' stability, luminous flame and reduced smokiness showed positive quality contributions to densification study and hence, suitability for domestic heating.

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Investigation of some Properties of Bio-coal Briquettes Produced using Beniseed (Sesame seed) Stalks as Biomass

Cited by 6 publications

References 23 publications

Effects of Binder Concentrations and Soaking Time on Combustion Characteristics of Briquettes Produced from Fermented Gmelina Arborea (Roxb) Sawdust and Used Print Paper

Effects of Binder Concentrations and Soaking Time on Combustion Characteristics of Briquettes Produced from Fermented Gmelina Arborea (Roxb) Sawdust and Used Print Paper

Combustion Characteristics of Briquettes Produced from Three Binders and Torrefied Gmelina arborea (Robx.) Sawdust

Development of a Multiple-Piston Hydraulic Briquetting Press HBP and Characterization of Newsprint Briquettes Produced

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