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| Simoyan, Kayode Joshua; Egbu, Chibuzor P.; Fasina, Oladiran O. |
| A study was undertaken to determine some energy properties of three non-timber forest tree residues: Bush Mango (Irvingia), Achi (Brachystegia eurycoma) and Para Rubber (Hevea brasiliensis) shells for fuel. The ultimate properties (Carbon, Hydrogen, Oxygen, Sulphur and Nitrogen contents) of the ground shells were determined. The proximate properties determined were volatile matter, ash and fixed Carbon contents, and calorific values. The shells for the three samples were reduced with a hammer mill to 1.00 mm, 2.00 mm and 4.75 mm particle sizes. The mean of the energy properties of the samples were compared using the New Duncan’s Multiple Range Test to determine if there were significant differences at (P ≤ 0.05). Results obtained showed that Irvingia... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering; Bioenergy Biomass; Biomass fuel; Calorific value; Residues and energy properties. |
| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4075 |
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| NWOKE, OJI ACHUKA; Okonkwo, Wilfred Ifeanyi; Echiegu, Emmanuel Amagu; Ugwuishiwu, Boniface Obinwanne; Okechukwu, Chibueze Henry. |
| The work aimed at determination of calorific value of municipal solid waste in Enugu, Nigeria and its potential for electricity generation. Random truck sampling was used according to American Society of Test and Material (ASTM) in the collection of samples at Ugwuaji landfill site, Enugu, Nigeria and calorific value was determined using oxygen bomb calorimeter. Enugu has a present population of 882,178 and the amount of municipal solid waste generated in Enugu was estimated to be 420 tonnes daily and this resulted in waste generation rate of 0.48kg/capita/day. The average composition of the municipal solid waste was 39% putrescible, 11% paper, 21% plastics, 5% textile, and 2% metal, 3% glass and 19% others. The average moisture content Volatile... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Municipal solid waste; Calorific value; Composition; Energy content; Electricity. |
| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5061 |
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| Ambrosio,Rodrigo; Pauletti,Volnei; Barth,Gabriel; Povh,Fabrício Pinheiro; Silva,Dimas Agostinho da; Blum,Hilbert. |
| ABSTRACT Agricultural residual biomass is an important source of energy, and its production and quality vary according to the crop management. This study aimed to assess the effects of plant distribution and nitrogen fertilization on the energy production potential of the biomass of maize cultivated under no tillage. The field experiment was installed in southeast Brazil using five nitrogen rates (0, 60, 120, 180, and 240 kg ha-1) and two inter-row spacings (0.4 and 0.8 m). Grain yield, residual biomass productivity, and bioenergy potential in different parts of the plant (grain, stalk+leaf, husk, and cob) were assessed. No change in grain yield was observed using narrow row spacing. Stalk+leaf and husk productivity was higher using 0.8 m than using 0.4 m... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Renewable energy; Zea Mays (L.); Calorific value; Electricity; Macronutrients.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000600626 |
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| Brand,Martha Andreia; Lacerda,Stephenson Ramalho; Oliveira,Juliana de; Lopes,Gisele Paim Ribeiro Domingues; Casagrande,Nayara Bergamo. |
| ABSTRACT: This study aimed to evaluate the quality of forest biomass energy, coming from the Caatinga, for different storage times in the field. The study was conducted in southern Piauí, between January and February (rainy season). Samples were collected containing branches and trunks of various species, and samples of branches and trunks separately in 5 sample units of 20x20m. Samples were evaluated in the general state freshly harvested and samples of branches and logs after 15 and 30 days of storage in piles in the field. The analyzes carried out were: moisture content on wet basis, ash content and calorific value. Moisture content of freshly harvested biomass ranged from 39% with two days after cutting to 79% in biomass cut and left distributed in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Firewood; Piauí; Calorific value; Moisture content. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000701178 |
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| Santos,Paulo S. B. dos; Ramos,Ricardo A. V.. |
| ABSTRACT The sugar-energy sector stands out in the production of electrical energy in the Brazilian energy matrix. The updating of Law 9,427 allowed increasing the limit of power injected in the transmission or distribution systems of existing projects from 30 to 50 MW, encouraging studies of expansion and/or implementation of new cogeneration projects. This study analyzed technologies to enhance energy cogeneration in a plant that sells about 27 MW of surplus power. For this, were studied the use of straw, electrification of drives by steam turbines, and high-drainage rollers (lotus mill roller), which allows reducing bagasse moisture, increasing its lower calorific value (LCV) and, consequently, electrical energy generation. Mass and energy balances in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioelectricity; Biomass; Combustion; Calorific value; Numerical simulation. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000200249 |
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| SANDRI,DAYANE DE OLIVEIRA; XISTO,ANDREA LUIZA RAMOS PEREIRA; RODRIGUES,ERIKA CRISTINA; MORAIS,ELAINE CARVALHO DE; BARROS,WANDER MIGUEL DE. |
| ABSTRACT Buriti is a fruit with potential for economic exploitation due to its nutritional components; however, there are few studies about their post-harvest characteristics. Thus, the aim of this study was to determine the physicochemical characteristics and analyze the antioxidant activity of Buriti pulp. Fruits were harvested at full maturity stage, sanitized, pulped and stored under refrigeration until freezing. Then, pulp was submitted to the following analyses: moisture, protein, total carbohydrates and reducing carbohydrates, ashes, lipids, crude fiber, water activity, titratable acidity (TA), pH, color, ß-carotene, a-carotene, antioxidant activity and total energy value (TEV). Analyses were performed in triplicate, and the mean, standard... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DPPH reduction; Calorific value; Proximate composition. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000300904 |
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