Product ethanol

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  • The possibility of producing ethanol from biomass such as maize cobs and groundnut shells was investigated. Different concentrations of sulphuric acid (H2SO4) were used to determine the acid concentration that could produce an optimal yield of glucose. The results revealed that 4.5M H2SO4 produced the optimal yield of glucose and ethanol. This acid concentration was then used for the study of temperature effects on yield of glucose. The results indicated that glucose yield increased with temperature within the experimental set-up....

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  • This work addresses a policy initiative by the Federal Administration to apply United States Department of Energy (DOE) research to broadening the country’s domestic production of economic, flexible, and secure sources of energy fuels. President Bush stated in his 2006 State of the Union Address: “America is addicted to oil.

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  • many groups and individuals have been motivated to consider the potential for producing ethanol. Across the country, farmer cooperatives, rural development coalitions, bio-energy advocates and others have gathered to explore the process and prospects for developing ethanol production facilities. In many cases these efforts have resulted in the successful development of ethanol plants.

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  • The objectives of this study are to select yeast strains capable of growth and ethanol production at elevated temperature from starters and to identification them to species. These results demonstrated that the K. marxianus ITB3 can be used for industrial ethanol production at high temperature in order to reduce energy consumption, especially in simultaneous saccharification and fermentation processes for production of ethanol from starchy and cellulosic materials that decreases the amount of saccharification enzymes and investment costs for a plant.

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  • This paper reports the production of fatty acid methyl esters (FAMEs) and fatty acid ethyl esters (FAEEs) by the transesterification reaction of rubber seed oil (RSO) in supercritical methanol and ethanol without using any catalyst.

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  • The fractionation of sugarcane bagasse using formic acid allowed removing lignin and hemicellulose, obtaining a material containing up to 90 % cellulose. The material can be easily hydrolyzed into glucose to serve as materials to produce high value added products such as biofuel, chemicals, pharmaceuticals, food additives, and the likes.

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  • The results showed that in the presence of ethanol, the nitrogen content decreased from 0.38 wt.% to approximately 0.07 wt.% after two times of centrifugation. The rubber glove made from the LPNR latex contains the lowest nitrogen content among various commercial rubber gloves.

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  • The possibilities of dissolving grade pulp production from poplar by an ethanol-water process were investigated. The effects of ethanol ratio, cooking temperature and acid catalyst ratio on unbleached, bleached and alkali-purified pulps were studied. It was seen that catalyst ratios exceeding 0.01% caused serious yield and viscosity losses.

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  • Ajowan is an aromatic seed spice that has a medicinal value. In this paper Ajowan Ethanolic Extract (AEE), which was prepared from Ajowan seeds, was assessed for antibacterial and antifungal activity against selected pathogenic bacteria and fungi by agar well diffusion assay.

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  • The aim of this investigation was to optimize immobilization conditions to entrap Kluyveromyces marxianus DBKKUY-103 during ethanol fermentation from sweet sorghum juice using a response surface methodology. The effects and interactions of variables involved in cell entrapment using polyvinyl alcohol and sodium alginate were studied through a fractional factorial design.

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  • This could be fortuitous at modest scales because oxygen is relatively costly (Consonni and Larson 1994a). However, for the production of methanol from biomass, the use of air increases the volume of inert (N 2 ) gas that would have to be carried through all the downstream reactors. Therefore, the use of oxygen thus improves the economics of synthesis gas processing. Air-fired, directly heated gasifiers are considered not to be suitable before methanol production. This gasifier produces a CO 2 rich gas.

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  • Biofuels Engineering Process Technology has many contents: Harvesting Energy from Biochemical Reactions, Microbial Modeling of Biofuel Production, Biofuel Feedstocks, Ethanol Production, Biodiesel, Biological Production of Hydrogen, Microbial Fuel Cells.

    pdf385p doremon3244 04-06-2014 46 20   Download

  • Ethanol use has also been boosted by the U.S. Clean Air Act and its various progressions. Originally, the Clean Air Act required wintertime use of oxygenated fuels in some urban areas to ensure more complete burning of petroleum fuels. Since ethanol contains 35 percent oxygen, this requirement of the act could be met by using an ethanol-containing blend. The current Energy Act eliminates the need for oxygenates per se in RFG, but it speci- fies the minimum amount of renewable fuels to be added to gasoline....

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  • 6 Bioethanoloffrom Biomass Production Ethanol from Molasses Velusamy Senthilkumar and Paramasamy Gunasekaran contents Abstract.................................................................................................................... 73 6.1 Introduction .................................................................................................... 74 6.2 Types of Molasses .......................................................................................... 74 6.3 General Process for the Production of Ethanol from Molasses ..................... 75 6.

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  • This book, Environmental Toxicology, is essentially the third, updated and improved version of the highly successful second edition of Principles of Environmental Toxicology. Basically the same outlay of chapters and the way of presentation were maintained; however, considerable changes and improvement were incorporated into this edition

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  • After two centuries of almost absolute belief in technical and economic progress, human society is in a period of reconsideration and elaboration of new strategies for the ongoing new century. Progress of our civilization with an explosive rise in world population has led to an enormously increased con- sumption of resources and to an equal threat to the environment. Coping with these problems requires all intellectual abilities of our society. In this endeav- or, biotechnology is considered to play a significant role.

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  • (BQ) Part 2 book "BRS biochemistry molecular biology and genetics" presents the following contents: Lipid and ethanol metabolism; nitrogen metabolism–amino acids, purines, pyrimidines and products derived from amino acids; molecular endocrinology and an overview of tissue metabolism, human genetics—an introduction.

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  • A multiple scenario analysis into the potential for bio-ethanol production form maize in South Africa By Maria Smith.

    pdf0p nguyenngocsonctu 30-11-2010 54 7   Download

  • In recent years, legislative and market requirements have driven the need to reduce fuel consumption while meeting increasingly stringent exhaust emissions. This trend has dictated increasing complexity in automotive engines and new approaches to engine design. A key research objective for the automotive engineering community has been the potential combination of gasoline-engine specific power with diesel-like engine efficiency in a cost-competitive, production-feasible power train.

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  • By 1980, fuel ethanol production had increased from a few million gallons in the 1970s to 175 million gallons per year. During the 1990s, production increased to 1.47 billion gallons, and total production for 2006 is expected to be about 5.0 billion gallons. Annual U.S. plant capacity is now over 4.5 billion gallons, most of it currently in use. Demand is rising partly because a number of States have banned (or soon will ban) methyl tertiary-butyl ether (MTBE), and ethanol is taking over MTBE’s role (Dien et al., April 2002). Ethanol provides a clean octane replacement for MTBE.

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