This work involved the molding briquettes with use of powder of coffee and eucalyptus wood sawdust residues. The briquettes produced from biomass can be applied as replacements for other fuels used in boilers for industrial processes or even for heating home in cold regions, using simple equipment. In Brazil and in many countries a large amount of waste coffee grounds is produced and wasted in daily life and in soluble coffee industry. The wood sawdust is also a fairly common residue in Brazil, especially in some cities that concentrate large number of companies that process wood. Then the molding of briquettes with these solid wastes is an opportunity to reuse the waste to produce a type of fuel from renewable sources, also including aspects related to bioenergy and Cleaner Production. Thus, in the present study were molded briquettes using the powder of coffee grounds and wood sawdust in different proportions of these materials to evaluate mechanical properties of diametrical compression. Also analyzes were performed to determine the moisture, volatile matter and ash contents, besides the determination of the calorific value content (PCS). All compositions containing sawdust briquettes caused increases in mean values of maximum resistance properties diametrical compression and elastic modulus when compared to the values of these properties of briquettes molded only with the coffee grounds. The different composition of briquettes containing sawdust presented similar value of resistance to diametrical compression. Considering the calorific values (PCS), all samples showed similar results compared to the literature. The briquettes containing only coffee grounds in the composition presents results of ash, volatile contents and PCS similar to the samples containing sawdust. However, the briquettes containing only coffee grounds showed lower maximum compressive strength compared to all other also molded with sawdust briquettes.
We obtained polymer films from corn starch with lignin incorporation as lignosulfonate. The motivation is the use of starch in obtaining films, due to their potential for biodegradation, and the use of lignosulfonate waste from the pulp and paper industry. To obtain films of lignosulfonates various powders of lignosulfonate were used, varying type and proportion (1% to 4%). Analyses were performed on polymer films to compare thermal properties by Differential Scanning Calorimetry, and tensile pr...
Biomass based energy generation is one of the major focus areas of renewable energy programs in India. The strength of India's biomass resources mostly lies in the agricultural sector. A large quantity of crop residue biomass is generated in India. However, crop residue biomasses are distributed resources with variation in spatio-temporal availability and its characteristics. Competing uses of residues also vary geographically. Therefore, local biomass databases are important for decentralized b...
Last. Quanguo Zhang(Henan Agricultural University)H-Index: 2
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Biomass can be relatively easily stored and transported compared with other types of renewable energy sources. Crop straw can be converted into densified solid biofuel via briquette fuel technology to expand its possible applications and enhance its utilisation efficiency. However, the potential economic, environmental and social impacts of crop straw briquette fuel need to be assessed before its large-scale use. This paper provides a comprehensive evaluation of these impacts for a fully-operati...
Abstract This paper investigated the feasibility of using the mixture of glycerin and biomass as an alternative fuel by measuring the energy used in the densification process and the energy gained from the briquette fuels. The correlation of the heating values between the calculated values and the actual values was also determined. Rice husk, sawdust, sugarcane bagasse, and sugarcane leaf were used as biomass. Different amounts of glycerin were mixed with the biomass during the densification pro...
#2Walid Marrouch(Lebanese American University)H-Index: 8
Last. Gérard Gaudet(UdeM: Université de Montréal)H-Index: 18
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We study the effects on the food price of introducing biofuels as a substitute for fossil fuel in the energy market. Energy is supplied by a price-leading oil cartel and a competitive fringe of farmers producing biofuel. Biofuel production shares a finite land resource with food production. A positive relationship results between energy and food prices. We establish that the equilibrium price of food will be growing as long as the oil stock is being depleted, and beyond if demand is growing. An ...
Last. J.J. Pis(CSIC: Spanish National Research Council)H-Index: 70
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Abstract The aim of this work consists on determining biomass fuels properties and studying their relation with fixed and variable costs of stores and handling systems. To do that, dimensions (length and diameter), bulk density, particle density and durability of several brands and batches of wood pellets and briquettes were tested, according to international standards. Obtained results were compared with those in literature. Bulk density tests were applied for several other biomass fuels too, a...
In rice husk briquette production process, electricity is used to drive the screw press and to heat up the die barrel. In the energy-starve countries, electricity consumption for producing biomass briquette fuel is not rationale. To reduce the electricity consumption in biomass briquette production process, a biomass fired stove is developed to use as the replacement of the electric heater. The biomass stove is capable of raising the temperature of die barrel at desired level for making briquett...
Last. Kenny Corscadden(Nova Scotia Agricultural College)H-Index: 5
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This study presents combustion and emission results obtained using an Environmental Protection Agency (EPA) phase two wood stove for 15 biomass briquettes produced from a range of feedstock including hay and switch grass. Fuel property, gas emissions, particulate emissions and stove efficiency are compared. In regard to fuel properties, proximate analysis, ultimate analysis and heating values are determined and emissions of carbon monoxide (CO), nitrogen oxides (NOx) and sulfur dioxide (SO2) are...
#1Pushpa S. Murthy(CSIR: Council of Scientific and Industrial Research)H-Index: 14
#2M. Madhava Naidu(CSIR: Council of Scientific and Industrial Research)H-Index: 12
Coffee is one of the popular beverages of the world and second largest traded commodity after petroleum. Coffee is cultivated in about 80 countries across the globe and entangles huge business worldwide. Coffee dispensation requires an elevated degree of processing know how and produces large amounts of processing by-products such as coffee pulp and husk, which have limited applications such as fertilizer, livestock feed, compost and such others. Biotechnological applications in the field of ind...
Wood biomass in Serbia is traditionally used for energy. However, the manner of its use is outdated, and efficiency is very low. Annually over 3.5millionm3 of wood is cut down for energy needs in Serbia. In order to better exploit all forms of woody biomass, especially the one that is now treated as waste, and in order to fulfil the obligations from the outlined Convention on Climate Change it is necessary to switch to a modern way of production and utilization of woody biomass. Serbia is now at...
Studies of the addition of coffee grounds and sugarcane fibers into briquettes were investigated. The use of different biomass aimed at obtaining efficient briquettes with better biofuels characteristics and results. In this work, mechanical and thermal characterizations were studied. The higher percentage of sugarcane fibers in the briquettes promoted an increase of elastic modulus and mechanical resistance. Thermal conversion occurred in temperature range of 200-530°C presenting a devolatiliza...