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Registros recuperados: 17
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A new approach to obtain cellulose nanocrystals and ethanol from Eucalyptus cellulose pulp via biochemical pathway. Repositório Alice
BONDANCIA, T. J.; MATTOSO, L. H. C.; MARCONCINI, J. M.; FARINAS, C. S..
bitstream/item/167824/1/P-A-New-Approach-to-Obtain-Cellulose-Nanocrystals-....pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Cellulose nanocrystal; Cellulosic ethanol; Enzimatic hydrolysis; Biorefinery; Renewable biomass.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1081071
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Advanced Biofuel Production in Louisiana Sugar Mills: an Application of Real Options Analysis AgEcon
Darby, Paul M.; Mark, Tyler B.; Detre, Joshua D.; Salassi, Michael E..
In order to more fully study the risks and uncertainty involved in cellulosic ethanol production, we examine a simulated plant in South Louisiana using Real Options Analysis
Tipo: Conference Paper or Presentation Palavras-chave: Real options; Risk; Uncertainty; Cellulosic ethanol; Energy cane; Sorghum; Bagasse; Simulation; Agribusiness; Agricultural Finance; Production Economics; Resource /Energy Economics and Policy; Risk and Uncertainty; Q42; Q14; Q16; D81; G31.
Ano: 2011 URL: http://purl.umn.edu/103747
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Biomass Supply from Alternative Cellulosic Crops and Crop Residues: A Preliminary Spatial Bioeconomic Modeling Approach AgEcon
Egbendewe-Mondzozo, Aklesso; Swinton, Scott M.; Izaurralde, R. Cesar; Manowitz, David H.; Zhang, Xuesong.
This paper introduces a spatial bioeconomic model for study of potential cellulosic biomass supply at regional scale. By modeling the profitability of alternative crop production practices, it captures the opportunity cost of replacing current crops by cellulosic biomass crops. The model draws upon biophysical crop input-output coefficients, price and cost data, and spatial transportation costs in the context of profit maximization theory. Yields are simulated using temperature, precipitation and soil quality data with various commercial crops and potential new cellulosic biomass crops. Three types of alternative crop management scenarios are simulated by varying crop rotation, fertilization and tillage. The cost of transporting biomass to a specific...
Tipo: Working or Discussion Paper Palavras-chave: Biomass production; Bioenergy supply; Biofuel policy; Bioenergy; Cellulosic ethanol; Agro-ecosystem economics; Ecosystem services economics; Agro-environmental trade-off analysis; Mathematical programming; EPIC; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Land Economics/Use; Production Economics; Resource /Energy Economics and Policy; Q16; Q15; Q57; Q18.
Ano: 2010 URL: http://purl.umn.edu/98277
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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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Can Dispersed Biomass Processing Protect the Environment and Cover the Bottom Line for Biofuel? AgEcon
Egbendewe-Mondzozo, Aklesso; Swinton, Scott M.; Bals, Bryan D.; Dale, Bruce E..
This paper compares environmental and profitability outcomes for a centralized biorefinery for cellulosic ethanol that does all processing versus a biorefinery linked to a decentralized array of local depots that pretreat biomass into concentrated briquettes. The analysis uses a spatial bioeconomic model that maximizes predicted profit from crop and energy products, subject to the requirement that the biorefinery must be operated at full capacity. The model draws upon biophysical crop input-output coefficients simulated with the EPIC model, as well as input and output prices, spatial transportation costs, ethanol yields from biomass, and biorefinery capital and operational costs. The model was applied to 82 cropping systems simulated across 37...
Tipo: Working Paper Palavras-chave: Biomass production; Bioenergy supply; Cellulosic ethanol; Environmental trade-off analysis; Bioeconomic modeling; EPIC; Spatial configuration; Local biomass processing; Crop Production/Industries; Environmental Economics and Policy; Production Economics; Resource /Energy Economics and Policy; Q16; Q15; Q57; Q18.
Ano: 2011 URL: http://purl.umn.edu/119348
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Choice of optimum feedstock portfolio for a cellulosic ethanol plant – A dynamic linear programming solution AgEcon
Kumarappan, Subbu; Ivanic, Rasto.
When the lignocellulosic biofuels industry reaches maturity and many types of biomass sources become economically viable, management of multiple feedstock supplies – that vary in their yields, density (tons per unit area), harvest window, storage and seasonal costs, storage losses, transport distance to the production plant – will become increasingly important for the success of individual enterprises. The manager’s feedstock procurement problem is modeled as a multi-period sequence problem to account for dynamic management over time. The case is illustrated with a hypothetical 53 million annual US gallon cellulosic ethanol plant located in south west Kansas that requires approximately 700,000 metric dry tons of biomass. The problem is framed over 40...
Tipo: Conference Paper or Presentation Palavras-chave: Cellulosic ethanol; Feedstock; Switchgrass; Miscanthus; Corn stover; Optimization; Biofuels; Biomass; Energy; Renewable; Agribusiness.
Ano: 2009 URL: http://purl.umn.edu/49407
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Conditions Necessary for Private Investment in the Ethanol Industry AgEcon
Kenkel, Philip L.; Holcomb, Rodney B..
While agricultural economics literature has become rife with the economics of ethanol production and cellulosic ethanol feedstock production, little has been written about capital investment necessary for the magnitude of industry development mandated by the Energy Security and Independence Act of 2007. Financing the development of the ethanol industry to meet the 36 billion gallon production capacity set for 2022 (with 16 billion gallons from cellulosic ethanol) will require capital investments exceeding $100 billion for production facilities, plus extensive investment in feedstock establishment and transportation/handling infrastructure. Federal support associated with political mandates does not address all of the financial issues related with the...
Tipo: Journal Article Palavras-chave: Biofuel policy; Cellulosic ethanol; Industry legitimacy; Private investment; Agribusiness; Agricultural Finance; Crop Production/Industries; Resource /Energy Economics and Policy; Q13; Q42; Q43; Q48.
Ano: 2009 URL: http://purl.umn.edu/53092
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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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Determining the Optimal Location for Collocating a Louisiana Sugar Mill and a New Cellulosic Ethanol Plant AgEcon
Darby, Paul M.; Mark, Tyler B..
This paper examines the possibility of collocating a cellulosic ethanol processing plant with certain Louisiana sugar mills, chosen based on their strategic locations and cane grinding capacity. The prospective plants are compared based on transportation costs and overall economic performance.
Tipo: Presentation Palavras-chave: Cellulosic ethanol; Advanced biofuels; Sugarcane; Energy cane; Bioenergy; Agribusiness; Production Economics; Resource /Energy Economics and Policy; Q16; Q42.
Ano: 2012 URL: http://purl.umn.edu/119787
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Ethanol and a Changing Agricultural Landscape AgEcon
Malcolm, Scott A.; Aillery, Marcel P.; Weinberg, Marca.
The Energy Independence and Security Act (EISA) of 2007 established specific targets for the production of biofuel in the United States. Until advanced technologies become commercially viable, meeting these targets will increase demand for traditional agricultural commodities used to produce ethanol, resulting in land-use, production, and price changes throughout the farm sector. This report summarizes the estimated effects of meeting the EISA targets for 2015 on regional agricultural production and the environment. Meeting EISA targets for ethanol production is estimated to expand U.S. cropped acreage by nearly 5 million acres by 2015, an increase of 1.6 percent over what would otherwise be expected. Much of the growth comes from corn acreage, which...
Tipo: Report Palavras-chave: Biofuels; Corn ethanol; Regional crop mix; Regional environmental effects; Water quality; Water use; Cellulosic ethanol; Crop residues; Livestock; Regional Environment and Agriculture Programming (REAP) Model; Renewable fuel standard; Environmental Economics and Policy; Research and Development/Tech Change/Emerging Technologies.
Ano: 2009 URL: http://purl.umn.edu/55671
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Juice technological quality, lignocellulosic physical-chemical attributes and biomass yield from energy cane clones. Repositório Alice
VIANA, R. da S.; MOREIRA, B. R. de A.; MAY, A.; MIASAKI, C. T.; CARASCHI, J. C.; ANDRADE, M. G. de O..
Abstract: Originating from backcrossing generations between wild and commercial sugarcane varieties, ?energy cane? technology promises to revolutionize global energetic scenario, once full use of feedstock is allowed. Therefore, the aim of this study was to assess juice technological quality, lignocellulosic physical-chemical composition, and biomass yield of nine energy cane. The experiment had a randomized block design with five replications for each clone (treatment) (VX12-1659, VX12-1658, VX12-1356, VX12-1191, VX12-1022, VX12-0277, VX12-0201, VX12-0180, and VX12-0046) with five replicates. Following to tillage harvest, stalk samples were assessed for total soluble solids (ºBrix; % juice), sucrose (Pol; % juice), purity (Prt; % juice), reducing sugars...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Electricity cogeneration; Cellulosic ethanol; Fiber cane; Cana de Açúcar; Biomassa; Bioenergia; Eletricidade; Sugarcane; Sugarcane juice; Bioenergy; Bioelectricity.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115957
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Land Use Implications of Expanding Biofuel Demand AgEcon
Dicks, Michael R.; Campiche, Jody L.; Torre Ugarte, Daniel de la; Hellwinckel, Chad M.; Bryant, Henry L.; Richardson, James W..
The Renewable Fuel Standard mandates in the Energy Independence and Security Act of 2007 will require 36 billion gallons of ethanol to be produced in 2022. The mandates require that 16 of the 36 billion gallons must be produced from cellulosic feedstocks. The potential land use implications resulting from these mandates were examined using two methods, the POLYSYS model and a general equilibrium model. Results of the POLYSYS analysis indicated that 72.1 million tons of corn stover, 23.5 million tons of wheat straw, and 24.7 million acres would be used to produce 109 million tons of switchgrass in 2025 to meet the mandate. Results of the CGE analysis indicated that 10.9 billion bushels of corn grain, 71 million tons of corn stover, and 56,200 tons of...
Tipo: Journal Article Palavras-chave: Cellulosic ethanol; Corn stover; Grain ethanol; Renewable fuel standard; Switchgrass; Crop Production/Industries; Demand and Price Analysis; Environmental Economics and Policy; Land Economics/Use; Resource /Energy Economics and Policy; Q15; Q42.
Ano: 2009 URL: http://purl.umn.edu/53091
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Market Interactions, Farmer Choices, and the Sustainability of Growing Advanced Biofuels AgEcon
Jiang, Yong; Swinton, Scott M..
Advanced biofuels such as cellulosic ethanol are of great interest for their potential to supply a significant portion of U.S. fuel needs plus advantages over corn grain-based ethanol. The sustainability of agriculture-based advanced biofuels depends on how farmers would respond in providing biomass feedstock, yet economic behavior by farmers has been under recognized by the science community. Focusing on markets and policy incentives, this research shows that farmers are unlikely to convert current grain cropland to grow a dedicated cellulosic biomass crop such as switchgrass. However, the financial incentives to harvest cellulosic biomass provided by the 2008 farm bill may stimulate corn production due to demand for corn grain for feed and ethanol and...
Tipo: Working or Discussion Paper Palavras-chave: Biomass; Energy; Advanced biofuels; Corn; Land use; Switchgrass; Cellulosic ethanol; Environmental Economics and Policy; Production Economics; Resource /Energy Economics and Policy; Q42; Q12.
Ano: 2008 URL: http://purl.umn.edu/43634
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Optimizing Ethanol Production in North Dakota AgEcon
Taylor, Richard D.; Koo, Won W..
A spatial equilibrium model based on a non-linear mathematical programming algorithm was developed to determine the optimal number, location, and size of cellulose ethanol plants for North Dakota. The objective function of the model is to minimize processing cost of biomass for ethanol and the transportation cost of shipping biomass to processing plants and ethanol to blending facilities. A heuristic approach, combined with a spatial equilibrium model, was used to determine the optimal number, location and size of biomass processing plants.
Tipo: Report Palavras-chave: Cellulosic ethanol; Biomass; Mathematical programming; Heuristic; Production costs; Agribusiness.
Ano: 2010 URL: http://purl.umn.edu/91841
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Studies of enzymatic hydrolysis of sugarcane bagasse pre-treated by steam explosion. Repositório Alice
BIANQUINI, T. S.; FLORENCIO, C.; FARINAS, C. S.; RIBEIRO, T. S..
bitstream/item/172520/1/P-Studies-of-Enzymatic-Hydrolysis-of-Sugarcane.pdf
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Enzymatic hydrolysis; Sugarcane; Bagasse; Cellulosic ethanol.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1087619
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Switchgrass to Ethanol: A Field to Fuel Approach AgEcon
Haque, Mohua; Epplin, Francis M..
The U.S. Energy Independence and Security Act of 2007 mandates the production of 16 billion gallons of cellulosic biofuels by 2022. Desirable feedstock properties, biomass to biofuel conversion rate, and investment required in plant and equipment differs depending on which of several competing technologies is used. The objective is to determine the breakeven ethanol price for a cellulosic biorefinery. A comprehensive mathematical programming model that encompasses the chain from land acquisition to ethanol production was constructed and solved. For a capital requirement of $400 million for a 100 million gallons per year plant and a conversion rate of 100 gallons of ethanol per dry ton, the breakeven ethanol price is $1.91 per gallon: $0.20 for land rental...
Tipo: Conference Paper or Presentation Palavras-chave: Biorefinery; Breakeven price; Cellulosic ethanol; Mathematical programming; Switchgrass; Agricultural and Food Policy; Crop Production/Industries; Production Economics; Q42; Q48.
Ano: 2010 URL: http://purl.umn.edu/61294
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The Economic Potential of Second-Generation Biofuels: Implications for Social Welfare, Land Use and Greenhouse Gas Emissions in Illinois AgEcon
Chen, Xiaoguang; Khanna, Madhu; Onal, Hayri.
This paper develops a dynamic micro-economic land use model that maximizes social welfare and internalizes externality from greenhouse gas emissions to obtain the optimal land use allocation for traditional row crops and bioenergy crops (corn stover, miscanthus and switchgrass), the mix of cellulosic feedstocks and fuel and food prices. We use this carbon tax policy as a benchmark to compare the implications of existing biofuel policies on land use, social welfare and the environment for the 2007-2022 period. The model is operationalized using yields of perennial grasses obtained from a biophysical model, county level data on yields of traditional row crops and production costs for row crops and bioenergy crops in Illinois. We show that a carbon tax policy...
Tipo: Working or Discussion Paper Palavras-chave: Cellulosic ethanol; Land use; Social welfare; Greenhouse gas emissions; Land Economics/Use; Resource /Energy Economics and Policy; Q42; Q24.
Ano: 2009 URL: http://purl.umn.edu/49484
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