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A importância do bioetanol dentro do contexto brasileiro, comparação de sua síntese a partir de cana-de-açúcar e milho e bioetanol de segunda geração. Repositório Alice
SILVA, F. S. G.; MIGOT, B. C.; SILVA, F. C. da.
RESUMO. Diante da busca por alternativas à dependência dos combustíveis fósseis, o bioetanol representa no Brasil, com sua síntese principalmente a partir de cana-de-açúcar, modelo para o mundo em produção e desenvolvimento sustentável. Este trabalho objetivou avaliar sua importância para o país, sua produção como biocombustível de segunda geração (2G) e comparar sua síntese a partir de cana e milho. O bioetanol tem representado no Brasil importante papel econômico, social e ambiental, com estudos e políticas de sua expansão no país e para o resto do mundo, visando substituir a gasolina. A produção de bioetanol 2G tem potencial de dobrar a produção do biocombustível, sem aumentar a área agrícola. Além disso, sua produção a partir de cana e milho, pode...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Bioetanol; Bioetanol 2G; Biocombustíveis; Usinas flex; Sustentabilidade; Cana de Açúcar; Milho; Desenvolvimento Sustentável; Sugarcane; Bioethanol; Sustainable development.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1122477
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A produção de etanol pela integração do milho-safrinha às usinas de cana-de-açúcar: avaliação ambiental, econômica e sugestões de política. Repositório Alice
MILANEZ, A. Y.; NYKO, D.; VALENTE, M. S.; XAVIER, C. E. O.; KULAY, L. A.; DONKE, A. C. G.; MATSUURA, M. I. da S. F.; RAMOS, N. P.; MORANDI, M. A. B.; BONOMI, A.; CAPITANI, D. H. D.; CHAGAS, M. F.; CAVALETT, O.; GOUVÊA, V. L. R. de.
Resumo: A inclusão na matriz energética brasileira de um biocombustível obtido de uma nova biomassa desperta questões sobre potenciais impactos ambientais e econômicos. Desse modo, com base em entrevistas com diversas empresas e consulta à literatura disponível sobre o etanol produzido por meio da integração cana-de-açúcar-milho, este artigo objetiva avaliar o desempenho ambiental e econômico das usinas flex. Do ponto de vista ambiental, os resultados para as usinas flex não comprometem o desempenho do etanol produzido, tanto pela ótica do balanço energético quanto pela das reduções das emissões de gases de efeito estufa (GEE). O desempenho econômico, por seu turno, aponta para maior viabilidade em regiões com oferta de milho a preços baixos e demanda...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Etanol; Biocombustível; Milho; Usina; Cana de açúcar; Impacto econômico; Impacto ambiental; Bioethanol; Sugarcane; Corn; Environmental impact; Economic impact; Bioenergy industry.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1003152
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AN ANALYSIS AS TO THE CAUSAL RELATIONSHIP BETWEEN BIOETHANOL EXPANSION AND AGRICULTURAL CROP ACREAGE ALLOCATION IN THE UNITED STATES AgEcon
Lee, Young-Jae; Kennedy, P. Lynn.
This study analyzes the historical price response of individual crop acreage in order to determine the impacts of an expansionist policy in bioethanol production on the U.S. agricultural industry. In doing this, this study provides an economic foundation by using a traditional Rotterdam model to simulate a cropland demand system. Within the developed framework, this study estimates own and cross acreage elasticities and scale elasticities to show the impacts of acreage values on crop production and the relationship between total cropland and individual crop acreage. This study found that rice farming is most inelastic to own acreage value. Soybeans, hay, and wheat are shown to be good substitute crops for corn. Corn, soybeans, hay, wheat, cotton, barley,...
Tipo: Conference Paper or Presentation Palavras-chave: Bioethanol; Acreage value; Rotterdam model; Own acreage elasticity; Cross acreage elasticity; Scale elasticity; Crop Production/Industries; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/6343
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An Economy-wide Analysis of Increasing Bio-Ethanol Production in Taiwan AgEcon
Lee, Duu-Hwa; Lin, Hsin-Chun; Chang, Ching-Cheng; Hsu, Shih-Hsun.
This article figures out the economic impacts on macroeconomy, industrial output, new energies and environment when the advantageous bioethanol and its feedstock production increase and replace the usage of gasoline in the future. A CGE model, called ¡§Taiwan General Equilibrium Model-Energy, (TAIGEM-E), was a linear/dynamic, linearized percentage change simulation tool used especially in the economic evaluation of environment policies. Results indicated that macroeconomic and environmental variables will all benefit with scenarios. Government should instantly encourage the production of bioethanol (and biodiesel) and it¡¦s producing resource because it truly can reduce the pressure of CO2 emission mitigation, and also can active agricultural fallow lands....
Tipo: Conference Paper or Presentation Palavras-chave: Bioethanol; Biodiesel; Computal General Equilibrium (CGE); TAIGEM-E; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/9902
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Analysis of the transcriptome in Aspergillus tamarii during enzymatic degradation of sugarcane bagasse. Repositório Alice
MIDORIKAWA, G. E. O.; CORREA, C. L.; NORONHA, E. F.; FERREIRA FILHO, E. X.; TOGAWA, R. C.; COSTA, M. M. do C.; SILVA JUNIOR, O. B. da; GRYNBERG, P.; MILLER, R. N. G..
bitstream/item/183671/1/Midorikawa-et-al-2018-Frontiers-in-Bioengineering-and-Biotechnology.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Carbohydrate-active enzymes; XlnR; Sugar transporters; ClrA; Aspergillus tamarii; Transcriptome; Lignocellulose; Bioethanol.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1096563
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Avaliação do desempenho ambiental do etanol de milho para o Brasil. Repositório Alice
DONKE, A. C. G.; MATSUURA, M. I. da S. F.; KULAY, L. A.; MATAI, P. H. L. dos S..
Resumo: Segundo a Agência Nacional de Petróleo, Gás Natural e Biocombustíveis, a demanda de etanol no Brasil alcançou os 9,9 milhões de m³ em 2012. No entanto, o setor sucroalcooleiro vem passando por uma fase de crise. Por outro lado, a região do Mato Grosso vem ganhando atenção por possibilitar a produção de etanol de outra fonte que não a cana-de-açúcar. O produto em questão é o milho, com recorrentes safras recordes e, com isso, vendido a baixos preços. Nesse contexto, este estudo se propõe a elaborar uma avaliação do desempenho ambiental da produção de etanol de milho nas condições da região oeste do Mato Grosso. A avaliação se trata de uma ACV atribucional com escopo de aplicação ?berço ao portão?, com sistema de produto que engloba a produção de...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Desempenho ambiental; Etanol; Milho; Biocombustível; Impacto ambiental; Environmental performance; Biofuels; Bioethanol.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1007477
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Bioconversion of glycerol for bioethanol production using isolated Escherichia coli SS1 BJM
Suhaimi,Sheril Norliana; Phang,Lai-Yee; Maeda,Toshinari; Abd-Aziz,Suraini; Wakisaka,Minato; Shirai,Yoshihito; Hassan,Mohd Ali.
Bioconverting glycerol into various valuable products is one of glycerol's promising applications due to its high availability at low cost and the existence of many glycerol-utilizing microorganisms. Bioethanol and biohydrogen, which are types of renewable fuels, are two examples of bioconverted products. The objectives of this study were to evaluate ethanol production from different media by local microorganism isolates and compare the ethanol fermentation profile of the selected strains to use of glucose or glycerol as sole carbon sources. The ethanol fermentations by six isolates were evaluated after a preliminary screening process. Strain named SS1 produced the highest ethanol yield of 1.0 mol: 1.0 mol glycerol and was identified as Escherichia coli...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycerol; Anaerobic fermentation; Bioethanol; Escherichia coli SS1.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000200011
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BIOENERGIE AS A SOURCE OF INCOME OF AGRICULTURAL ENTERPRISES AgEcon
Makarchuk, Oksana; Hockmann, Heinrich; Lissitsa, Alexej.
Enterprise activity is based on maximization of profit to increase the volume of own capital, to expand manufacture and to guarantee the earning of profit for the long-term period. Therefore everyone searches for new sources of the income by means of which it is possible to maximize cost of the made product. One of new sources of the income in agriculture is a cultivation of agricultural crops for the energy, heat, fuel (biofuel) manufacture. In this "discussion paper" the market is examined for biofuel, as well as their competitiveness is analyzed in comparison to mineral fuels. Germany takes the lead positions on manufacture and use of biofuel among the countries of the European Union and Ukraine has a big potential on the agricultural commodities market...
Tipo: Working or Discussion Paper Palavras-chave: Биотопливо; Биоэтанол; Биомасса; Возобновляемые источники энергии; Конкурентоспособность; Спрос и предложение.Biokraftstoff; Bioethanol; Biomasse; Erneubare Energien; Wettbewerbsfähigkeit; Angebot und Nachfrage.Biofuel; Bioethanol; Biomass; Renewed energy sources; Competitiveness; Supply and demand.; Agribusiness; Environmental Economics and Policy; Farm Management; Productivity Analysis; Resource /Energy Economics and Policy; Q12; Q27.
Ano: 2007 URL: http://purl.umn.edu/91735
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Bioethanol production from coconut husk fiber Ciência Rural
Cabral,Mirelle Márcio Santos; Abud,Ana Karla de Souza; Silva,Carlos Eduardo de Farias; Almeida,Renata Maria Rosas Garcia.
ABSTRACT: Population growth and the increasing search for healthy foods have led to a major consumption of coconut water and, hence, to an environmental impact caused by the inappropriate disposal of green coconut husks. This lignocellulosic biomass has deserved attention of researchers concerning the seeking of new usages, as, for example, in renewable fuels production technologies. This study examines the potential of green coconut husk fibers as a feedstock for the production of bioethanol. The coconut fibers were pretreated through an alkaline method, hydrolyzed enzymatically and submitted to ethanol fermentation with commercial yeasts of Saccharomyces cerevisiae. Despite the significant loss of cellulose (4.42% in relation to the fiber and 17.9%...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Reuse; Coconut husk; Fermentation; Bioethanol.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001001872
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Bioethanol production from rice straw residues BJM
Belal,Elsayed B..
A rice straw -cellulose utilizing mold was isolated from rotted rice straw residues. The efficient rice straw degrading microorganism was identified as Trichoderma reesei. The results showed that different carbon sources in liquid culture such as rice straw, carboxymethyl cellulose, filter paper, sugar cane bagasse, cotton stalk and banana stalk induced T. reesei cellulase production whereas glucose or Potato Dextrose repressed the synthesis of cellulase. T. reesei cellulase was produced by the solid state culture on rice straw medium. The optimal pH and temperature for T. reesei cellulase production were 6 and 25 ºC, respectively. Rice straw exhibited different susceptibilities towards cellulase to their conversion to reducing sugars. The present study...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cellulase; Trichoderma reesei; Rice straw residues; Enzymatic hydrolysis; Bioethanol.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100033
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Biomass harvest and bioethanol production from chlorella vulgaris treating swine wastewater. Repositório Alice
MEZZARI, M. P.; PIROLLI, M.; PRANDINI, J. M.; NUNES, E. O.; SOARES, H. M.; SILVA, M. L. B. da.
2014
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Chlorella vulgaris; Swine wastewater; Flocculation; Bioethanol.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1033629
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Bioprospecting thermophiles for cellulase production: a review BJM
Acharya,Somen; Chaudhary,Anita.
Most of the potential bioprospecting is currently related to the study of the extremophiles and their potential use in industrial processes. Recently microbial cellulases find applications in various industries and constitute a major group of industrial enzymes. Considerable amount of work has been done on microbial cellulases, especially with resurgence of interest in biomass ethanol production employing cellulases and use of cellulases in textile and paper industry. Most efficient method of lignocellulosic biomass hydrolysis is through enzymatic saccharification using cellulases. Significant information has also been gained about the physiology of thermophilic cellulases producers and process development for enzyme production and biomass...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lignocelluloses; Bioethanol; Cellulase; Thermophiles.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000300001
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Breaking into the Cellulosic Ethanol Market: Capacity and Storage Strategies AgEcon
Darby, Paul M.; Mark, Tyler B.; Salassi, Michael E..
This paper examines the possibilities of breaking into the cellulosic ethanol market in south Louisiana via strategic feedstock choices and the leveraging of the area’s competitive advantages. A small plant strategy is devised whereby the first-mover problem might be solved, and several scenarios are tested using Net Present Value analysis.
Tipo: Conference Paper or Presentation Palavras-chave: Cellulosic ethanol; Sugarcane; Energy cane; Sweet sorghum; Bagasse; Ethanol; Biofuel; Bioethanol; Agribusiness; Agricultural Finance; Crop Production/Industries; Production Economics; Research and Development/Tech Change/Emerging Technologies; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/56542
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Consolidated briefing of biochemical ethanol production from lignocellulosic biomass Electron. J. Biotechnol.
Spyridon,Achinas; Willem Euverink,Gerrit Jan.
Bioethanol production is one pathway for crude oil reduction and environmental compliance. Bioethanol can be used as fuel with significant characteristics like high octane number, low cetane number and high heat of vaporization. Its main drawbacks are the corrosiveness, low flame luminosity, lower vapor pressure, miscibility with water, and toxicity to ecosystems. One crucial problem with bioethanol fuel is the availability of raw materials. The supply of feedstocks for bioethanol production can vary season to season and depends on geographic locations. Lignocellulosic biomass, such as forest-based woody materials, agricultural residues and municipal waste, is prominent feedstock for bioethanol cause of its high availability and low cost, even though the...
Tipo: Journal article Palavras-chave: Bioconversion; Bioethanol; Fermentation; Hydrolysis; Renewable fuels.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000500009
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Current status and prospects of biomass technologies in Japan Use of bioethanol OAK
Nishizaki, Kunio; 西崎, 邦夫.
2005年8月4日とかちプラザ・レインボーホールで開催、日本ユネスコ国内委員会主催の帯広農村開発教育国際セミナー(OASERD)国際連合ユネスコアジア太平洋地域教育開発計画事業(APEID)シンポジウム「地球にやさしい農業をめざして : 資源リサイクルを利用した持続可能な食糧生産-」講演資料
Palavras-chave: Biomass; Biofuel; Biogas; BDF(Bio Diesel Fuel); Bioethanol.
Ano: 2005 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1895
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DesinFix TM 135 in fermentation process for bioethanol production BJM
Barth,Dorothee; Monteiro,Ana Raquel de Souza; Costa,Marcelo Moreira da; Virkajärvi,Ilkka; Sacon,Vera; Wilhelmsom,Annika.
Brazil has the world's largest ethanol production from sugarcane, but bacterial contamination decreases the ethanol yields. It was shown that the biocide DesinFixTM 135 can reduce the contamination without decreasing the yeasts' viability or negatively affecting the ethanol production.
Tipo: Info:eu-repo/semantics/other Palavras-chave: Ethanol production; Fermentation process; Sugar cane feedstock; Biocides; Bioethanol.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100046
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Effect of acid hydrolysis and fungal biotreatment on agro-industrial wastes for obtainment of free sugars for bioethanol production BJM
El-Tayeb,T.S.; Abdelhafez,A.A.; Ali,S.H.; Ramadan,E.M..
This study was designed to evaluate selected chemical and microbiological treatments for the conversion of certain local agro-industrial wastes (rice straw, corn stalks, sawdust, sugar beet waste and sugarcane bagasse) to ethanol. The chemical composition of these feedstocks was determined. Conversion of wastes to free sugars by acid hydrolysis varied from one treatment to another. In single-stage dilute acid hydrolysis, increasing acid concentration from 1 % (v/v) to 5 % (v/v) decreased the conversion percentage of almost all treated agro-industrial wastes. Lower conversion percentages for some treatments were obtained when increasing the residence time from 90 to 120min. The two-stage dilute acid hydrolysis by phosphoric acid (1.0 % v/v) followed by...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioethanol; Agro-industrial wastes; Acid hydrolysis; Biotreatment.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400037
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Energy and Water Use Related to the Cultivation of Energy Crops: a Case Study in the Tuscany Region Ecology and Society
Dalla Marta, Anna; DIPSA-University of Firenze; anna.dallamarta@unifi.it; Natali, Francesca; DIPSA-University of Firenze;; Mancini, Marco; DIPSA-University of Firenze;; Ferrise, Roberto; DIPSA-University of Firenze;; Bindi, Marco; DIPSA-University of Firenze;; Orlandini, Simone; DIPSA-University of Firenze;.
The contribution of agrobiomasses, as a source of energy, to the reduction of greenhouse gas emissions was confirmed by several studies. Biomass from agriculture represents one of the larger and more diverse sources to exploit and in particular ethanol and diesel have the potential to be a sustainable replacement for fossil fuels, mainly for transport purposes. However, the cultivation of energy crops dedicated to the production of biofuels presents some potential problems, e.g., competitiveness with food crops, water needs, use of fertilizers, etc., and the economic, energy, and environmental convenience of such activity depends on accurate evaluations about the global efficiency of the production system. In this study, the processes related to the...
Tipo: Peer-Reviewed Insight Palavras-chave: Agroenergy; Bioethanol; Energy balance; Pure vegetable oil; Water balance.
Ano: 2011
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Enzymatic hydrolysis and fermentation of ultradispersed wood particles after ultrasonic pretreatment Electron. J. Biotechnol.
Revin,Victor; Atykyan,Nelli; Zakharkin,Denis.
Background: A study of the correlation between the particle size of lignocellulosic substrates and ultrasound pretreatment on the efficiency of further enzymatic hydrolysis and fermentation to ethanol. Results: The maximum concentrations of glucose and, to a lesser extent, di- and trisaccharides were obtained in a series of experiments with 48-h enzymatic hydrolysis of pine raw materials ground at 380-100 rpm for 30 min. The highest glucose yield was observed at the end of the hydrolysis with a cellulase dosage of 10 mg of protein (204 ±21 units CMCase per g of sawdust). The greatest enzymatic hydrolysis efficiency was observed in a sample that combined two-stage grinding at 400 rpm with ultrasonic treatment for 5-10 min at a power of 10 W per kg of...
Tipo: Journal article Palavras-chave: Bioethanol; Ligsnocelluloses; Yeast Saccharomyces cerevisiae.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000200003
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Estimating the bioenergy potential of Pinus radiata plantations in Chile Ciencia e Investigación Agraria
Acuña,Eduardo; Espinosa,Miguel; Cancino,Jorge; Rubilar,Rafael; Muñoz,Fernando.
The bioenergy potential for electricity and ethanol production of Pinus radiata D. Don plantations in Chile was modeled, on a regional basis, using radiata pine plantations areas by age class. Wood basic density equations based on age and growing region, wood moisture content variability, and the effciency of a hypothetical power plant were used to estimate the amount of electricity produced by biomass at harvesting age including logging residues. Bioethanol yield was estimated at 275 L t-1 of dry biomass. The uncertainty of the bioenergy production were analyzed using probabilistic distribution functions and an estimate of 1.83 million ha-1 of radiata pine plantations by year 2030. Parameters considered for the uncertainty analyses included the rotation...
Tipo: Journal article Palavras-chave: Bioenergy; Bioethanol; Biomass; Radiata pine; Logging residues; Monte Carlo simulation.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000100009
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