Cardboard/sawdust briquettes as biomass fuel: Physical-mechanical and thermal characteristics (original) (raw)
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Journal of Applied Sciences and Environmental Management, 2017
This research investigated the relaxed densities of biomass briquettes produced from combination of sawdust and charcoal. Cassava starch gel and orange waste were used as binder for briquetting. Five sizes; 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm and 1.0 mm and mixing ratios 50:50, 60:40, 70:30, 80:20 and 90:10 of biomass materials, sawdust and charcoal were used with 16.6% binder. The ignition time, water boiling test, afterglow time and shattered index of the briquettes were analyzed. Descriptive tools were used to determine the optimum sizes and mixing ratios for effective production of briquette biomass. The results showed that the relax density of 663.33 kg/m 3 and 589.31 kg/m 3 were obtained for Cassava starch gel binder and orange waste at size 1.0 mm and mixing ratio of 90:10 while Ignition time of 12 sec and 19 sec were obtained for cassava starch gel and orange waste at size 0.2 mm and mixing ratio 50:50 respectively. Also water boiling time of 18.05 minutes and 15.00 minutes were obtained for cassava starch gel and orange waste at size 0.2 mm and mixing ratio 50:50 while the afterglow time of 321.00 sec and 318.00 sec at size 0.2 mm and mixing ratio 60:40 were obtained for cassava starch gel and orange waste respectively. The highest retention of shattered index of 98.21% and 96.71% were respectively recorded for cassava starch gel and orange waste at size 0.2 mm and mixing ratio 50:50. ©JASEM
Evaluation of Briquettes Produced from Charred Sawdust, Corncob and Ricehusk
The International Journal of Science & Technoledge
The use of firewood, twigs and charcoal as fuel sources has resulted increase in the rate of deforestation. This study evaluated the physical and chemical properties of briquettes produced from charred farm wastes to supplement the use of charcoal and firewood. Charred farm wastes namely; corncob, rice husk and sawdust were used to produce the briquette with starch as the binding material. A ratio of 100 %, 50-50 % and 33.33 % mixture of the raw material were used in preparation of the briquettes. Laboratory tests including shatter index, boiling test, proximate and ultimate analysis were carried out to determine the physical and chemical qualities of the developed briquettes. From results obtained, sawdust briquette with the least density (325.6kg/m 3) recorded the least boiling time of 30mins compared to the other samples. The proximate analysis showed that, the mixture of corncob and sawdust briquette had the highest values of volatile matter (71.48%) and fixed carbon content (19.99%), least amounts of ash content (2.29%) and moisture content (6.24). Mixture of corncob and sawdust also had the highest heating value of 30804.72kJ/kg. The production of briquettes from these waste materials as shown in this study provides alternate fuel to charcoal or firewood as well as helps manage waste disposal.
Experimental study on the properties of biomass fuel through briquetting technique
International Journal of Innovative Research in Science, Engineering and Technology
In this project work, briquettes are made from saw dust, rice husk and straw by using a compound lever press technology without heating device. The briquetting equipment, compound lever press is made of wood, which make it a very easy and cheap way of forming biomass briquettes. The process is economic as there is no need of extra electric energy for pressing. The proximate analysis is carried out to determine moisture content, volatility, ash content and fixed carbon. Calorific values and density of briquettes are also determined. The briquettes produced are dense, easy to store as well as to handle. These briquettes can be used as fuels and can very well substitute coal in commercial applications as fuel.
Optimization of Composite Briquette Made From Sawdust/Rice Husk Using Starch and Clay Binder
2021
In this study, the physical properties and optimization of briquettes made from rice husk and sawdust were carried out. The bio-waste material of homogeneous particle sizes of 0.5mm and two binders of 90:10 percentage compositions which were sun-dried, prepared and compressed for the production of the briquettes. Energy valuation of the briquettes was carried out using a bomb Calorimeter. Response surface methodology was implored in the optimization of the energy values from rice husk/sawdust composite briquettes with clay and starch as binders, after which a composite briquette made from mahogany sawdust/rice husk was produced using the optimal condition values of 15% binder starch, 28% rice husk and 9Mpa compaction pressure. The results indicated that composite briquettes of mahogany sawdust and rice husk produced using starch gave the maximum energy value of 5.69kcal/g whereas those made with clay gave the least calorific value of 3.35kcal/g. This indicates that briquette from a ...
Resources, 2022
The development of this research work seeks to determine the mechanical behavior of the compacted mixture of pine sawdust and rice husk by varying the mass percentages of these biomasses obtained in briquettes, with the purpose of being marketed. The finite element software ANSYS is used to corroborate the results obtained for the samples named AIO, BIO and CIO with rice husk mass percentages of 25, 50 and 75, respectively. In the computational simulations, Young’s moduli of between 651 and 813 MPa and a Poisson’s ratio of 0.8 were found for all samples. In compression tests, Von Mises stresses of between 87 and 90 MPa and Von Mises strains between 0.09 and 0.12 m/m were found. Free-fall tests showed von Mises stresses below 4.24 MPa. It was determined that increasing the percentage of rice husk mass in the simulation models increased the value of Young’s modulus and compressive strength, this is a positive indication in relation to the strength of the formed briquettes, in case the...
2021
In this study, a simple manually operated briquetting machine suitable for use in rural community with no access to electricity supply was fabricated. A three (3) tone hydraulic jack and a pressure gauge were installed to allow for pressure variation. Some physical and combustion properties such as the compressed density, shatter index, hydrophobicity, combustion rate and ignition time of the produced briquettes were determined at the three (3) different compaction pressures of 420.4 kN/m2 , 525.5 kN/m2 and 630.6 kN/m2 . Rice husk (RH), sawdust (SD) and composite briquettes of rice husk and sawdust (RH/SD) were produced using cassava starch as a binder. The developed biomass briquetting machine had a minimum and maximum production capacities of 20 kg/hr and 30 kg/hr respectively. The results showed that the physical properties improved at an increasing compaction pressure. All the produced briquettes at different compaction pressures from the different biomass exhibited over 90% shatter index while the briquette produced from RH at compaction pressure of 525.5 kN/m2 had the highest combustion rate. The RH/SD briquette moulded at compaction pressure of 630.6 kN/m2 had the least combustion rate. The ignition time of the briquettes increased with increasing compaction pressure from 1.28 to 1.58. However, this study found that the RH biomass briquette exhibited a superior solid fuel quality property compared to the other briquette samples. Therefore, this study recommends the RH briquette as a sustainable source of solid biofuel
Physico-mechanical Characteristics of High Density Briquettes produced from Composite Sawdust
Journal of Applied Science and Environmental Management, 2020
Physico-mechanical characteristics of briquettes produced from composite sawdust admixture using a screw press briquetting machine was investigated. Sample feedstock materials collected has particle sizes varying between 6-8mm with 10-20% powdery components (< 4 mesh). Briquette's physical characteristics investigated using standard test apparatus and procedures include dimensional stability immediately, 1 hour and 30 days after production, effects of particle moisture and particle size on briquette compressed and relaxed densities. Mechanical characteristics include resistance to gravity and impact, effects of densities on impact resistance index (IRI) and effects of briquette durability in water. Statistical models were used to establish empirical relationships between the feedstock materials (independent variables) and briquette characteristics (independent variables). The physical characteristics of briquettes produced at 12% are loose and brittle with poor dimensional stability, at 10% they are bonded but weak in strength with good dimensional stability while briquettes produced at 8% are well-formed, good colouration with char carbonation, excellent dimensional stability. The compressed density of the briquettes ranges of 490-820 kg/m 3. The lower moisture briquettes have high resistance to water dispersion, high impact resistance and excellent storability.
Nnkkmlll, EVALUATION OF THE PHYSICAL PROPERTIES OF SOME BIOMASS BRIQUETTES
In many developing countries, the use of energy in the form of firewood, twigs and charcoal has been the major source of renewable energy due to the high cost of cooking gas and kerosene. This necessitated the use of agricultural and wood wastes in producing briquette as alternatives. In this work, the physical properties (compressed density, relaxed density, length expansion and swelling thickness) of some biomass briquettes of different sizes were evaluated. They are maize stalk (0.6, 1.0, 2.36, 4.75, 8.0, 9.5 and12.5mm), rice husks (0.6, 1.0, and 2.36mm), and sawdust (0.6, 1.0, 2.36, 4.75, 8.0, 9.5 and12.5mm. It was discovered that rice husk briquette of 0.6mm particle size showed better compressed and relaxed density than the other briquettes. Also, the briquettes produced from 0.6mm particle size for the three biomass materials showed better result for swelling thickness while rice husks of particle size of 0.6mm with 3% starch content showed better result for length expansion. It can therefore be concluded that the smaller the particle size of the briquette considered the better the physical properties evaluated. However, it is recommended that the production of good biomass briquettes should include moderate starch proportion or other good binder in order to influence the physical properties.
Evaluation of Thermal and Mechanical Analysis for Loose Biomass Making Briquettes
The main objective of the project is to develop the loose biomass waste to briquettes primarily to explore value of application avenues. The loose biomass waste composites to briquettes are developed in India on the basis of two strategy of preventing depletion of agricultural and forest wastages. In this raw material marigold (gillyflower), rose flower, lemon peels, orange peels, gigantean leaves, thorny leaves to briquettes based composites material with the addition of Synthetic adhesives binder have been developed substitutes for coal charcoal of briquettes & high density and comparison of wood. In this project the biomass wastages were fabricated by combining materials of moulding box in copped from hand lay method. A synthetic adhesive (INDOCOL-DLD) was used as the matrix material. The mechanical and thermal properties of these samples were investigated according to IS and ASTM standards. From the result it was observed that the comparison of biomass briquettes and wood with high calorific value and density and also very less carbon sulphur emission. The biomass briquettes are equal amount of compressive strength and durability has been observed. Briquettes have much lower ash content (20-40% as compared to wood or coal).