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| Registros recuperados: 88 | |
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| I., Manta H.; D., James D.; I., Awu J.. |
| Green house effect and ozone layer depletion due continuous environmental pollution from fossil fuel has speed up the quest for search of alternative energy fuel. In recent year, biofouls has attracted much attention as a reliable substitute to fossil fuel. The objective of this study was to evaluate and characterize biofuel produced from Egusi vegetable oil by applying standard method of transesterification. This study was carried out at Processing and Storage Engineering Departmental (PSED) laboratory of National Centre for Agricultural Mechanization (NCAM), Ilorin Kwara State, Nigeria. The results of the proximate characterization of the produced Egusi vegetable oil shows crude protein, crude fibre, ether extract, moisture content, ash content and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Egusi Vegetable Oil; Characterization; Transesterification; Methyl Esters; Biofuel. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6205 |
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| Tieppo, R. C.; Andrea, M. C. S.; Gimenez, L. M.; Romanelli, T. L.. |
| Sugarcane production system is in transition, mainly due to its harvesting process. Harvest through burning has been gradually replaced by mechanized processes, providing another by-product to be explored: sugarcane trash. In Brazil, through of the sugarcane trash, São Paulo state itself produces around 210.4 million BOE – barrel of oil equivalent (1,251,952 TJ ), which could supply consumers through cogeneration or for further second generation ethanol. For the sugarcane trash to be collected, mechanized processes are required, such as windrowing, gathering, and transporting. In agricultural production systems, embodied energy is affected by the mechanization level. In order to assess environmental performance by the energy point-of-view, analysis of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Material flow; Mechanized harvest; Bioenergy; Biofuel. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2913 |
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| Rahimi-Ajdadi, Fatemeh; Esmaili, Masoomeh. |
| Agricultural crops and forest residues are of valuable resources to produce biofuel due to anaerobic digestion. But, the recalcitrance nature of these lignocellulose residues limits its enzymatic degradation. Therefore, efficient pretreatments prior to anaerobic digestion are essential. Hydrothermal-chemical pretreatments using Phenol (Ph), Sodium Hydroxide (SH), and Phosphoric Acid (PA), and combined pretreatments included Ph+SH and Ph+PA as chemical pretreatments were used for spruce wood. The samples were put into the autoclave at 134º C for 20 min. Acid hydrolysis, FTIR and SEM analyses were carried out. The results indicated that all pretreatments were effective lignin removal having the highest value for Ph (42.362%). Adding Ph to PA increased lignin... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biofuel; Combined pretreatment; Lignin removal; Phenol; SEM analysis. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6855 |
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| Santos, Otávio Neto Almeida; Folegatti, Marcos Vinícius; Lena, Bruno Patias; Diotto, Adriano Valentim; Francisco, João Paulo; Romanelli, Thiago Libório. |
| Jatropha (Jatropha curcas L.) is an oil seed species, adaptive to different climate and soil conditions. It is known due to its high-oil-content seed, being an option for biodiesel production and presenting competitive yields under irrigated condition. This study was developed in an experimental area located in a humid subtropical region of Brazil and the objective was to evaluate Jatropha’s energy balance under irrigation and rainfed condition during the first four years of its cycle. First, the material flows were determined, which supported the calculation of, energy input and output flows were obtained. These were used to determine the energy indices: energy balance (EB), and energy return on investment (EROI) for both conditions. Fertilizers had the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biofuel; Energy efficiency; Sustainability; Energy flow. |
| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4597 |
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| Faria,P.B.; Cantarelli,V.S.; Fialho,E.T.; Pinto,A.M.B.G.; Faria,J.H.; Rocha,M.F.M.; Guerreiro,M.C.; Bressan,M.C.. |
| The aim of this work was to evaluate the effects of adding different levels of glycerin in the feeding on the lipid profile and cholesterol of the meat of finishing pigs. The experiment was arranged in a completely randomized design (CRD) with factorial 5x2, being five levels of glycerin in the diet and two genders. Sixty (60) swine of the Topigs genetics (30 barrows and 30 gilts) were used; they presented initial average weight of 79.3+4.0kg and were finished with the weight of 106.2+4.5kg. The levels of glycerin utilized were 0, 50, 100, 150 and 200g/kg in the natural matter. The analyses of lipid and cholesterol profile were conducted in the muscles longissimus dorsi(loin) andsemimembranosus (ham) on the left side of the carcasses. Interaction occurred... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biofuel; Fatty acids; Nutritional composition. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000200535 |
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| Todd,James Ryan; Sandhu,Hardey; Binder,Joe; Arundale,Rebecca; Gordon,Vanessa; Song,Jian; Glaz,Barry; Wang,Jianping. |
| ABSTRACT The world collection of sugarcane (Saccharum hybrids. and related grasses (WCSRG) is an important source of genes for sugarcane and energycane breeding. The core collection or diversity panel of the WCSRG was created in Canal Point with 300 accession and 10 checks to evaluate its diversity. The fiber components of the species and accessions within the WCSRG are unknown, so a shredded and dried fiber sample was taken from each accession and sent for fiber analysis. The acetyl groups, acid insoluble lignin, acid soluble lignin, arabinan, glucan, holocellulose, total lignin, structural ash, and xylan were quantified on a % fiber basis and nonstructural ash on a % total basis. There were significant, but not large differences between species for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biofuel; Bioenergy; Miscanthus; Erianthus; Biomass. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000100048 |
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| Rao,Ashok; Sathiavelu,A.; Mythili,S.. |
| ABSTRACT The growing need to address current energy and environmental problems has sparked an interest in developing improved biological methods to produce liquid fuels from renewable sources. Higher-chain alcohols possess chemical properties that are more similar to gasoline. Ethanol and butanol are two products which are used as biofuel. Butanol production was more concerned than ethanol because of its high octane number. Unfortunately, these alcohols are not produced efficiently in natural microorganisms, and thus economical production in industrial volumes remains a challenge. The synthetic biology, however, offers additional tools to engineer synthetic pathways in user-friendly hosts to help increase titers and productivity of bio-butanol. Knock out... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Butanol; CRISPR; Biofuel; Clostridium acetobutylicum. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100604 |
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| Ramos,Cíntia Lacerda; Duarte,Whasley Ferreira; Freire,Ana Luiza; Dias,Disney Ribeiro; Eleutherio,Elis Cristina Araújo; Schwan,Rosane Freitas. |
| Sixty six indigenous Saccharomyces cerevisiae strains were evaluated in stressful conditions (temperature, osmolarity, sulphite and ethanol tolerance) and also ability to flocculate. Eighteen strains showed tolerant characteristics to these stressful conditions, growing at 42 ºC, in 0.04% sulphite, 1 mol L-1 NaCl and 12% ethanol. No flocculent characteristics were observed. These strains were evaluated according to their fermentative performance in sugar cane juice. The conversion factors of substrates into ethanol (Yp/s), glycerol (Yg/s) and acetic acid (Yac/s), were calculated. The highest values of Yp/s in sugar cane juice fermentation were obtained by four strains, one isolated from fruit (0.46) and the others from sugar cane (0.45, 0.44 and 0.43).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alcoholic fermentation; Biofuel; Fermentation kinetics; UFLA FW221; Saccharomyces cerevisiae. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300044 |
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| Molin,José Paulo; Veiga,João Paulo Soto. |
| ABSTRACT Sugarcane is a very important crop in Brazil, used as food production and biofuel, providing 18% of the total primary energy in the country. An important requirement to high yield is a good uniformity in the sugarcane field, which is impaired due to row gaps that appear since the first year of sugarcane crop caused by planting failures, harvesting damages, machinery traffic, pests, diseases and others. The aim of this study is to develop a system based on a photoelectric sensor to scan the field, georeferencing gaps representing them as a map. A data logger integrates the data from the photoelectric sensors, an encoder and a Global Navigation Satellite System (GNSS) and measures the distance between plants, defining the gaps. Tests under... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Close range remote sensing; Interpolation; Photoelectric sensor; Biofuel; Field quality. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000300347 |
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| Brighenti,Alexandre Magno; Calsavara,Leonardo Henrique Ferreira; Varotto,Yago Vieira Guerra. |
| ABSTRACT Elephant grass (Pennisetum purpureum Schum.) is an important forage crop that has been proposed as a potential feedstock for bioenergy production. However, weed interference is a major factor limiting elephant grass production. Field experiments were conducted in 2014 and 2015 to evaluate preemergence herbicides for selective weed control in an elephant grass pasture. Herbicide treatments included atrazine + S-metolachlor, atrazine + simazine, ametryn, ethoxysulfuron, S-metolachlor, diuron + hexazinone, sulfentrazone, imazethapyr, and atrazine at label use rates. Weedy and weed-free treatments were included. Atrazine + S-metolachlor, atrazine + simazine, ametryn, ethoxysulfuron, S-metolachlor, sulfentrazone, and atrazine did not cause... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioenergy; Biofuel; Napier grass; Forage; Pennisetum purpureum. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000100052 |
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| Estrada,Javier Solis; Schlosser,José Fernando; Farias,Marcelo Silveira de; Rodrigues,Fabrício Azevedo; Martini,Alfran Tellechea; Santos,Gustavo Oliveira dos. |
| ABSTRACT: This research evaluated the performance of a diesel engine in an agricultural tractor, using Diesel S500 (B5) and mixture with 3% (ED3), 6% (ED6), 9% (ED9), 12% (ED12) and 15% (ED15) of hydrous ethanol. Variables evaluated were the power, torque, specific fuel consumption, torque reserve, speed reserve and elasticity index of engine. Results indicated that using B5 and ED3 the values of torque and engine power not differ, in addition, with the ED3 the fuel consumption was lower than 5.92%. Using ED12, power has reduced in 2.97%, compared with B5, while their fuel consumption had no difference. With ED15, the power was lower 6.30% and the fuel consumption increase 3.77%, both compared with B5. Torque reserve value was increased with increasing the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biofuel; Diesel cycle; Agricultural tractor; Brake dynamometer. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000701200 |
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| Silva,Luis Felipe Lima e; Gonçalves,Wilson Magela; Maluf,Wilson Roberto; Resende,Luciane Vilela; Sarmiento,Christiany Mattioli; Licursi,Vicente; Moretto,Paulo. |
| ABSTRACT: The aim of the present study was to estimate the energy balance (output/input ratio) of the canola crop for biodiesel production, under Brazilian conditions. Fossil energy expended in the production of 600kg of oil per hectare was 7,146,537kcal. The estimated energy yield per hectare was 9,930,000kcal from the production of 1,500kg ha-1 of seeds (40% oil and 60% oil cake), which resulted in an energy balance of 1.39. Results indicated the viability of biofuel production from canola, but also showed the need to improve the technology used to increase the energy and economic balance ratios. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica napus L. var. oleifera; Biofuel; Energy sustainability. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200932 |
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| Visioli,Luiz Jardel; Alves,Eliana Albornoz; Trindade,Aline; Kuhn,Raquel Cristine; Schwaab,Marcio; Mazutti,Marcio Antonio. |
| In this research it was evaluated the production of biobutanol by Clostridium beijerinckiiNRRL B-592 using sweet sorghum juice as carbon source. Operational variables, like pH and initial inoculum size, as well as supplementation of industrial media with yeast extract and tryptone, were evaluated. The maximum butanol obtained was 2.12g kg-1 using 12.5% of inoculum size, 0.05g 100mL-1 of tryptone and 0.1g 100mL-1 of yeast extract and initial pH of 5.5. The main contribution of this research was to show a systematic procedure for development of a low cost industrial media for biobutanol production from sweet sorghum. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biobutanol production; Industrial media; Biofuel; Sweet sorgum. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000901707 |
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| Choudhary,Jairam; Singh,Surender; Nain,Lata. |
| Lignocellulosic biomass is the most abundant renewable source of energy that has been widely explored as second-generation biofuel feedstock. Despite more than four decades of research, the process of ethanol production from lignocellulosic (LC) biomass remains economically unfeasible. This is due to the high cost of enzymes, end-product inhibition of enzymes, and the need for cost-intensive inputs associated with a separate hydrolysis and fermentation (SHF) process. Thermotolerant yeast strains that can undergo fermentation at temperatures above 40°C are suitable alternatives for developing the simultaneous saccharification and fermentation (SSF) process to overcome the limitations of SHF. This review describes the various approaches to screen and develop... |
| Tipo: Journal article |
Palavras-chave: Bioethanol; Biofuel; Enzymes; Genome shuffling; Lignocellulosic biomass. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000300013 |
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| Westman,Johan O; Taherzadeh,Mohammad J; Franzén,Carl Johan. |
| Background: Robust second generation bioethanol processes require microorganisms able to ferment inhibitory lignocellullosic hydrolysates. In this study, the inhibitor tolerance and flocculation characteristics of Saccharomyces cerevisiae CCUG53310 were evaluated in comparison with S. cerevisiae CBS8066. Results: The flocculating strain CCUG53310 could rapidly ferment all hexoses in dilute acid spruce hydrolysate, while CBS8066 was strongly inhibited in this medium. In synthetic inhibitory media, CCUG53310 was more tolerant to carboxylic acids and furan aldehydes, but more sensitive than CBS8066 to phenolic compounds. Despite the higher tolerance, the increase in expression of the YAP1, ATR1 and FLR1 genes, known to confer resistance to... |
| Tipo: Journal article |
Palavras-chave: Biofuel; Furfural; Lignocellulose; Phenolic inhibitors; Saccharomyces cerevisiae. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582012000300005 |
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| Registros recuperados: 88 | |
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