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A BIOMASSA FLORESTAL (LENHA) COMO INSUMO ENERGÉTICO PARA OS ARTESÃOS DA CIDADE DE TRACUNHAÉM/PE AgEcon
Silva, Ana Maria Navaes Da; Albuquerque, Jose de Lima; Silva, Elizandro Souza Da; Santos Filho, Demorval Dos; Barbosa, Waldinilson Barros.
Situado na Zona da Mata pernambucana, o município de Tracunhaém tem como principal atividade econômica a cerâmica artesanal. A arte ceramista do município conta com renomados artistas, o que faz da cidade um dos maiores centros de excelência na arte da modelagem do barro no país. Pernambuco abriga parte de dois biomas importantíssimos para a biodiversidade do planeta, a Mata Atlântica e a Caatinga, apresenta preocupante estado de degradação ambiental.Os impactos variam desde pequenos focos de desmatamentos, até áreas em processo de desertificação. Este trabalho analisa a demanda por biomassa florestal pelos artesãos de Tracunhaém, em Pernambuco. As atividades desenvolvidas pelos artesãos apresentam um grande potencial impactante, pois além de utilizarem a...
Tipo: Conference Paper or Presentation Palavras-chave: Biomassa florestal; Artesão; Consumo de lenha; Energia renovável; Forest biomass; Craftsman; Consumption of firewood; Renewable energy; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/109606
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A megújuló energiaforrások szerepe és hatásai a hazai agrárgazdaságban AgEcon
Magda, Robert.
Összességében megállapítható, hogy Magyarországon az elmúlt fél évszázadban rendkívül megnőtt az energiafelhasználás, ami többnyire a fosszilis tüzelőanyagokból nyert energiára alapult. Ez arra készteti a jelen és a jövő kor társadalmát, hogy törekedjen a rendelkezésre álló megújuló energiaforrások felhasználásának előtérbe helyezésére, melyek használata a fenntarthatóság és a versenyképesség szempontjából sem elhanyagolható, hiszen ismert, hogy napjaink egyik kritikus költségtényezőjét adják az energiaköltségek. A megoldásban jelentős szerep hárul a vidéki társadalmakra, mert hiába történik az energiafelhasználás zöme az urbanizált területeken, az energia-előállítás, kitermelés a vidékre koncentrálódik. A fosszilis tüzelőanyagok korlátaiból adódóan új...
Tipo: Article Palavras-chave: Energiafüggőség; Megújuló energiahordozók; Biomassza; Foglalkoztatás; Energy dependence; Renewable energy; Biomass; Employment; Community/Rural/Urban Development; Labor and Human Capital.
Ano: 2011 URL: http://purl.umn.edu/119936
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Az energetikai célú növénytermelés megítélése AgEcon
Szecsei, Timea; Salamon, Lajos.
A Nyugat-dunántúli Régió gazdálkodói körében vizsgáltuk az energetikai növények ismertségét, a termelés megítélését és az alacsony vállalkozói aktivitás okait. Avezetők csupán 7%-a hallott az összes megjelölt energianövényről, míg 11% még egyikkel sem találkozott. Azok a vezetők, akik bizonyos szintű ismerettel már rendelkeznek a vizsgált energianövényekről, nagyobb érdeklődést mutatnak az átlagnál. Az információk elérhetőségével a válaszadók 29%-a elégedetlen és 53%-a közepesen elégedett. Avárható támogatásoktól és a realizálható árbevételtől függ alapvetően az energianövények termelésére való vállalkozás, de fontos még a felvásárlási szerződés és a feldolgozóüzem távolsága is. Asaját üzemi felhasználás lehetősége csak közepes minősítést kapott. A...
Tipo: Journal Article Palavras-chave: Megújuló energia; Biomassza; Energianövény-termelés; Nyugat-dunántúli Régió; Renewable energy; Biomass; Energy crop cultivation; Western Transdanubian Region; Crop Production/Industries; Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/99192
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Consumers’ knowledge of bio-energetics AgEcon
Tamus, Antalne.
Our aim was to establish the specific objectives and toolkit of eco-energetic marketing targeting the North Hungarian region, through a primary survey of 600 persons. Our research objective was to examine – taking the region’s economic and social circumstances into consideration – what conditions, consumer reception, and affinity is needed to gain competitive advantage with the involvement of renewable energy sources, and also to point out the characteristics of how the population currently uses energy, its mode and satisfaction level. During the examination of consumers’ familiarity level with renewable energy sources we observed the dominance of solar, hydro, and wind energy, nevertheless, their knowledge about these renewable energy sources was rather...
Tipo: Journal Article Palavras-chave: Renewable energy; Attitude; Associations; Primary research; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/48088
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Cost-Effectiveness of Renewable Electricity Policies AgEcon
Palmer, Karen L.; Burtraw, Dallas.
We analyze policies to promote renewable sources of electricity. A renewable portfolio standard raises electricity prices and primarily reduces gas-fired generation. A "knee" of the cost curve exists between 15% and 20% goals for 2020 in our central case, and higher natural gas prices lower the cost of greater reliance on renewables. A renewable energy production tax credit lowers electricity price at the expense of taxpayers and thus limits its effectiveness in reducing carbon emissions; it also is less cost-effective at increasing renewables than a portfolio standard. Neither policy is as cost-effective as a cap-and-trade policy for achieving carbon emissions reductions.
Tipo: Working or Discussion Paper Palavras-chave: Renewable energy; Electricity; Renewable portfolio standard; Carbon dioxide; Resource /Energy Economics and Policy; Q42; Q48; Q54.
Ano: 2005 URL: http://purl.umn.edu/10845
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CRITICAL ECONOMIC FACTORS FOR SUCCESS OF A BIOMASS CONVERSION PLANT FOR AGRICULTURAL RESIDUE, YARD RESIDUE AND WOOD WASTE IN FLORIDA AgEcon
Granja, Ivan R.; VanSickle, John J.; Ingram, Lonnie; Weldon, Richard N..
This model evaluates the potential success of a cellulosic ethanol plant in Florida. Critical Economic factors of the plant were simulated to assess the ability of this project. These critical factors include the feedstock to be used, the cost of the facility, transportation costs and the discount rate for the net present value (NPV). Results and observations are presented in this paper.
Tipo: Conference Paper or Presentation Palavras-chave: Biofuels; Renewable energy; Cellulosic ethanol; Biomass; Agribusiness; Community/Rural/Urban Development; Crop Production/Industries; Financial Economics; Production Economics; Productivity Analysis; Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 2010 URL: http://purl.umn.edu/56442
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Deshidratador solar para productos agrícolas. Colegio de Postgraduados
Hernández Santana, Crescencio Alejandro.
En México un gran porcentaje de la comercialización de frutas y hortalizas se realiza en fresco. Aunque por un lado, es el tipo de producto preferido por muchos consumidores, por otro, existen excedentes que saturan el mercado, bajan los precios alarmantemente y se incrementan las perdidas. No existe la capacidad instalada en infraestructura para conservar estos productos, aún en fresco. Por lo que este trabajo propone el desarrollo de un deshidratador para productos vegetales, que permitirá alargar su vida de anaquel y transformarlo en otro producto de consumo. La culminación de este proyecto, coadyuvará a mejorar la calidad de vida y arraigo social de los pobladores en regiones de origen. Se hicieron pruebas de secado con el nopal (Opuntia ficus indica),...
Palavras-chave: Energías renovables; Deshidratación; Conservación; Vegetales; Frutas; Renewable energy; Dehydration; Preservation; Vegetables; Fruits; Maestría Tecnológica; Agroindustria.
Ano: 2010 URL: http://hdl.handle.net/10521/322
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Design of substrate supply contracts for biogas plants AgEcon
Reise, Christian; Liebe, Ulf; Musshoff, Oliver.
For a sustainable development of energy production in biogas plants, the continuous supply with substrates is essential. To the authors’ knowledge, there have not been carried out any quantitative investigations of farmers’ choices with regard to supply contracts for biogas plants. Thus, it has been only possible to a limited extent to make predictions for a targeted design of supply contracts. We therefore investigated different factors, which might be relevant for the conclusion of substrate supply contracts, by conducting a survey with 178 German farmers. The survey included a choice experiment, in which participants were confronted with different contract attributes (features). These attributes were varied systematically and thus revealed the influence...
Tipo: Presentation Palavras-chave: Renewable energy; Bioenergy; Substrate supply contract; Contract design; (labeled) choice experiment; Resource /Energy Economics and Policy.
Ano: 2012 URL: http://purl.umn.edu/124428
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Development and performance evaluation of indigenized flat plate collector water heater for domestic and industrial applications CIGR Journal
Ghafoor, Abdul.
Pakistan is facing severe energy crises from the last decade resulting daily electric blackouts from 8 to 12 h. The limited fossil fuel reserves and its environmental consequences have led to boost research and development of alternate energy resources. A huge amount of fossil fuels and electricity is being consumed for the generation of low to medium temperature heat energy for domestic, residential, agro-industrial and processing units. This low to medium temperature heat energy required can easily be fulfilled using solar collectors. This paper focus on the development of a flat plate collector using local infrastructure to reduce its initial cost. The collector consists of a window glass, absorber plate coated with black matt paint, copper tubes, inlet...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Renewable energy; Flat plate collector; Collector efficiency; Payback time.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3352
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Development of the World Fuel Ethanol Industry AgEcon
Wang, Suya.
This paper summarizes the developmental courses of fuel ethanol in the world. Then, it analyzes the existing problems and developmental prospects of fuel ethanol.
Tipo: Thesis or Dissertation Palavras-chave: Energy crisis; Environmental pressure; Renewable energy; Fuel ethanol; Environmental Economics and Policy; International Development; Resource /Energy Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/53522
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Economic Analysis of Feed-in Tariffs for Generating Electricity from Renewable Energy Sources AgEcon
van Kooten, G. Cornelis.
Tipo: Working or Discussion Paper Palavras-chave: Feed-in tariffs; Renewable energy; Resource /Energy Economics and Policy.
Ano: 2011 URL: http://purl.umn.edu/107093
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Economic feasibility of converting cow manure to electricity: A case study of the CVPS Cow Power program in Vermont AgEcon
Wang, Qingbin; Thompson, Ethan; Parsons, Robert L.; Rogers, Glenn.
A case study of the Central Vermont Public Service Corporation (CVPS) Cow Power program examines the economic feasibility for dairy farms to convert cow manure into electricity via anaerobic methane digestion. The study confirms that it is technically feasible to convert cow manure to electricity on dairy farms but the economic returns highly depend on the base electricity price paid by CVPS, premium rate paid by CVPS customers, financial supports from government agencies and other organizations, and sales of the by-products of methane generation. Lessons learned from this program will be useful to other dairy farms and communities interested in converting cow manure into electricity.
Tipo: Conference Paper or Presentation Palavras-chave: Anaerobic digestion; Dairy farms; Renewable energy; Economic feasibility; Vermont.; Agricultural Finance; Consumer/Household Economics; Demand and Price Analysis; Environmental Economics and Policy; Farm Management; Research and Development/Tech Change/Emerging Technologies.
Ano: 2011 URL: http://purl.umn.edu/104564
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Economic Parameters for Corn Ethanol and Biodiesel Production AgEcon
Eidman, Vernon R..
This article presents current investment and operating costs of ethanol and biodiesel plants for alternative prices of feedstock. The price of these two fuels is estimated for alternative prices of crude oil with the existing renewable fuels policy. The excise tax credit, currently $0.51 per gallon of ethanol and $1.00 per gallon of biodiesel, is a major contributor to the fuel price and profitability of these industries. The analysis demonstrates how the crude oil price, feedstock price, and excise tax credits interact to impact profitability of these industries
Tipo: Journal Article Palavras-chave: Biodiesel; Biofuels; Ethanol; Renewable energy; Resource /Energy Economics and Policy; Q13; Q18; Q28; Q42.
Ano: 2007 URL: http://purl.umn.edu/6519
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Effects of temperature and time on oil extraction from some Nigerian indigenous fresh water microalgae species CIGR Journal
Asoiro, Felix Uzochukwu; Okonkwo, Wilfred Ifeanyi; Akubuo, Clement Onyeaghala; Nweze, Nkechinyere O.; Anyanwu, Cosmas Ngozichukwu.
This study determined the effects of temperature and time on oil extraction from indigenous freshwater microalgae– Dictyosphaerium, Chlorella, Desmodesmus and Cosmarium species, cultured in fifteen 2-litre column photobioreactors (PBR) (three per specie).  Growth and specific growth rates for the mixotrophic>autotrophic cultivation of the species. Oil was extracted from the dried microalgae species at temperatures ranging from 40 to 120 °C at 20 oC intervals and times ranging from 30 to 210 minutes at 30 minutes’ intervals, by accelerated solvent extraction method. Extraction temperature, time and type of microalgae species had significant effect (p < 0.05) on oil yield (temperature > time > type of species).  As extraction temperature and time...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural engineering; Bioresources engineering; Biotechnology; Energy; Renewable energy; Agriculture. oil yield; Dictyosphaerium spp; Desmodesmus subspicatus; Chlorella lewinii; Cosmarium spp; Growth rate..
Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5247
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ENERGIA RENOVÁVEL: UMA ANÁLISE SOBRE OFERTA E DEMANDA DE ETANOL NO BRASIL AgEcon
Oliveira, Michelle Pinto; Alencar, Junia Rodrigues de; Souza, Geraldo da Silva e.
A grande necessidade de diminuir a dependência em relação ao petróleo devido aos seus preços em constante elevação, a preocupação com o meio ambiente (protocolo de kyoto) e a crescente demanda por carros flex tem colocado o etanol - uma energia totalmente renovável - em papel de destaque, como fonte alternativa de energia. A demanda e a oferta por este biocombustível são crescentes nos últimos anos e com grande possibilidade de se manter forte e dinâmica por vários anos. Neste contexto, o estudo teve como objetivo analisar quais as variáveis que afetaram a oferta e a demanda de etanol no Brasil, no período de 1995 a 2006. O método de análise utilizado foi o modelo de equilíbrio simultâneo por meio de mínimos quadrados em dois estágios, com correção de...
Tipo: Conference Paper or Presentation Palavras-chave: Etanol; Energia renovável; Biocombustível; Oferta e demanda; Equações simultâneas; Ethanol; Renewable energy; Biofuel; Supply; Demand; Simultaneous equations; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/108835
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Energy, Agriculture, and GHG Emissions: The Role of Agriculture in Alternative Energy Production and GHG Emission Reduction in North Dakota AgEcon
Aravindhakshan, Sijesh C.; Koo, Won W..
Energy, agriculture, and GHG emissions are highly interrelated. Several agricultural commodities are currently used as feedstock for biofuel production to replace fossil fuels. As the largest consumer of energy, the U.S. has taken several initiatives to reduce the use of fossil fuels, achieve energy security, and reduce GHG emissions. The industrial community of the U.S. invested heavily in biofuel and wind energy production. North Dakota has highest potential in producing wind energy and biomass from dedicated energy crops. Unfortunately these resources are not fully utilized for producing renewable energy. North Dakota is an energy intensive economy and per capita energy consumption is higher than other states. This technical bulletin provides a...
Tipo: Report Palavras-chave: Renewable energy; Wind power; Ethanol; Greenhouse gas emissions; Agriculture; Agribusiness; Resource /Energy Economics and Policy.
Ano: 2011 URL: http://purl.umn.edu/101222
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Environmental and Technology Policies for Climate Change and Renewable Energy AgEcon
Fischer, Carolyn; Newell, Richard G..
We assess different policies for reducing carbon dioxide (CO2) emissions and promoting the innovation and diffusion of CO2-reducing power technologies: (1) emissions price, (2) tax on fossil power, (3) tradable emissions performance standard, (4) market share requirement for renewables, (5) renewables production subsidy, and (6) R&D subsidy for renewables. We evaluate the relative performance of the policies according to incentives they provide along different avenues for emissions reduction, their efficiency, and other salient outcomes. We also assess how the nature of technological progress-whether it occurs by learning by doing or R&D investment and the degree of knowledge spillovers -affects the desirability of different policies. In a...
Tipo: Working or Discussion Paper Palavras-chave: Environment; Technology; Policy instruments; Climate change; Renewable energy; Environmental Economics and Policy; Q21; Q28; Q48; O38.
Ano: 2005 URL: http://purl.umn.edu/10789
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Ethyl esters obtained from pequi and macaúba oils by transesterification with homogeneous acid catalysis. Repositório Alice
SANTOS, R. C. M. dos; GURGEL, P. C.; PEREIRA, N. S.; BREVES, R. A.; MATOS, P. R. R. de; SILVA, L. P.; SALES, M. J. A.; LOPES, R. de V. V..
bitstream/item/203219/1/1-s2.0-S0016236119315601-main.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Renewable energy; Homogeneous acid catalysis; Ethyl esters; Macaúba; Pequi; Biodiesel.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113256
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Evaluación técnica de un sistema híbrido de producción de energías alternas. Colegio de Postgraduados
Hernández Bautista, Cristóbal.
El uso de las energías alternativas (eólica y fotovoltaica) presenta beneficios ambientales debido a que es menos contaminante que la energía producida con combustibles que emiten una importante cantidad de CO2 a la atmósfera. Estas energías pueden ser usadas particularmente en áreas remotas que se encuentran fuera del alcance de la red eléctrica. En México, en el 2010 habían aproximadamente 3, 836,066 personas en estas condiciones (INEGI, 2011), por lo que el objetivo del presente estudio evaluar el funcionamiento de un sistema autónomo de producción de energía fotovoltaica, un aerogenerador y un calentador solar instalados en la “Unidad de Traspatio” del Campus Montecillo del Colegio de Postgraduados. Se encontró que el sistema fotovoltaico y el...
Palavras-chave: Módulo fotovoltaico; Aerogenerador; Calentador solar; Eficiencia; Energía renovable; Renewable energy; Photovoltaic module; Wind turbine; Solar water heater; Efficiency; Hidrociencias; Maestría.
Ano: 2013 URL: http://hdl.handle.net/10521/1984
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Factors affecting properties of fuel pellets from compaction of mixed biomass and waste plastics CIGR Journal
Auprakul, Unchana; Promwungkwa, Anucha; Tippayawong, Nakorn; Chaiklangmuang, Suparin.
The purpose of this research is to investigate densified solid fuel from mixed plastic wastes which were recovered from dumpsites. Corn stover was used as natural binder of the fuel. In this study, the corn stover can bind plastic materials into the fuel using compaction. The densification of mixed plastic wastes and corn stover was investigated at 150 MPa compression pressure. The size of pellet was 8 mm in diameter and 20 mm in length. The parameters effect on the fuel properties of this research were moisture content (5-20%w.b.), types of material, mixed plastic wastes and corn stover ratio (55:45, 65:35 and 75:25), and preheating temperatures (75 and 100°C). Results found that corn stover can improve chemical properties (reducing sulfur and chlorine...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biomass; Densification; RDF; Renewable energy; Waste-to-energy.
Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5181
Registros recuperados: 43
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