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Production of bioethanol

Xem 1-20 trên 39 kết quả Production of bioethanol
  • Bioethanol from lignocellulosic substrates could be a key alternative and sustainable fuel because of diminishing fossil fuel reserves and increased concerns over environmental pollution. Therefore, recent focus has made on cheaply available lignocellulosic substrate like bamboo. Production of bioethanol using bamboo as feedstock is gaining importance as of relatively higher growth rate and their abundant and sustainable availability in the tropics.

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  • This study, the rice straw was pretreated with sodium hydroxide as the step of rice straw pretreatment in bioethanol production, and then lignin was recovered by acidification method. The obtained lignin was characterized by Fourier-transform infrared (FT-IR) and X-ray powder diffraction (XRD) to confirm the chemical structure, inorganic matter. To produce sodium lignosulfonate (NaLS), the sulfomethylation was conducted between lignin, formalin, and sodium sulfite.

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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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  • Parageobacillus thermoglucosidasius is a thermophilic and ethanol-producing bacterium capable of utilising both hexose and pentose sugars for fermentation. The organism has been proposed to be a suitable organism for the production of bioethanol from lignocellulosic feedstocks.

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  • The cellulolytic efficiency of yeast isolates obtained from different fruit and fruit wastes was evaluated in terms of degradation of cellulose, release of reducing sugars and bioethanol production.

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  • Currently, the ability to convert raw materials from lignocellulose-rich biomass by traditional methods has many limitations. Therefore, the objective of the thesis is to exploit a variety of biocatalysts (hydrolases) from fungi to efficiently convert lignocellulose-rich biomass from ABP into sugars (C5 and C6) capable of fermenting for bioethanol production. The thesis uses "enzyme cocktail" synergistic catalyst to increase the ability of biological transformation.

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  • With the depletion of oil resources as well as the negative environmental impact of fossil fuels, there is much interest in alternative energy sources. Focusing on some of the most important alternate energy sources for the foreseeable future, the Handbook of Plant-Based Biofuels provides state-of-the-art information on the status of the production of biofuels, in particular, bioethanol and biodiesel. After profiling plant-based biofuels, the book gives an overview of the production of biofuels from biomass materials by thermochemical and biochemical methods.

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  • Section II Production of Bioethanol © 2009 by Taylor & Francis Group, LLC 5 Fuel Ethanol and Outlook Current Status Edgard Gnansounou contents Abstract.................................................................................................................... 57 5.1 Introduction..................................................................................................... 58 5.2 Current Status ................................................................................................. 59 5.2.1 Generic Conversion Scheme ..................................................

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  • Biofuels such as bioethanol are becoming a viable alternative to fossil fuels. Utilizing agricultural biomass for the production of biofuel has drawn much interest in many science and engineering disciplines. As one of the major crops, maize offers promise in this regard. Compared to other crops with biofuel potential, maize can provide both starch (seed) and cellulosic (stover) material for bioethanol production.

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  • Production of biofuels, especially bio-ethanol from lignocellulosic biomass, holds remarkable potential to meet the current energy demand as well as to mitigate greenhouse gas emissions for a sustainable clean environment. Rice is one of the most important agricultural crops in India. Rice straw is an important residue which is generated in large amount in India. Every kilogram of grain harvesting is accompanied by the production of rice straw to a tune of 1.0–1.5 kg. Major proportion of the rice straw is burnt in the field itself.

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  • Bio-fuels have caught global attention in the last decade. They are renewable liquid fuels made from biological raw materials and have proved to be good substitutes for petroleum in the transportation sector. Being environment friendly, bio-fuels like ethanol and biodiesel can help us to conform to stricter emission norms.

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  • The production of the bioethanol from the vast quantity of ligno-cellulosic (LC) biomass using cellulases and yeasts has been suggested as an alternate energy source and offers potential to reduce the burden on fast depleting fossil fuel reservoirs. The major bottlenecks in commercial production of second generation bioethanol are complex feed stocks, high cost of enzymes and non-availability of co-fermenting yeasts.

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  • Sugarcane has been used as the main crop for ethanol production for more than 40 years in Brazil. Recently, the production of bioethanol from bagasse and straw, also called second generation (2G) ethanol, became a reality with the first commercial plants started in the USA and Brazil.

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  • Screened the all collected microalga samples from in and around the Western Ghats of Karnataka state for the bioethanol and biomass production. 62 terrestrial microalgae were collected from the fresh water bodies and only 5 samples used for bioethanol production on the basis of biochemical characteristics, were used for multiplication and fermentation study. Multiplication of algae was done by open ponds production system.

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  • Application of RH and RHA in domestic and industrial processing not only useful to increase farm income in directly and indirectly way but also it is the alternative solution to disposal problem of RH. In this review we are discussing about composition and applications of RH and RHA in commercial and industrial sectors.

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  • The global annual potential bioethanol production from the major crops, corn, barley, oat, rice, wheat, sorghum, and sugar cane, is estimated. To avoid con/icts between human food use and industrial use of crops, only the wasted crop, which is de0ned as crop lost in distribution, is considered as feedstock. Lignocellulosic biomass such as crop residues and sugar cane bagasse are included in feedstock for producing bioethanol as well. There are about 73:9 Tg ofdry wasted crops in the world that could potentially produce 49:1 GL year−1 ofbioethanol.

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  • Problem statement: Dilute sulphuric acid and enzymatic hydrolysis methods were used for sugar extraction. Xylose and glucose sugars were obtained from corn cobs. Approach: Acid hydrolysis of corn cobs gave higher amount of sugars than enzymatic hydrolysis. Results: The results showed that optimal temperature and time for sugar fermentation were approximately 25°C and 50 h by two yeast strains (S. cerevisiae and P. Stipitis) respectively.

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  • 10 Bioethanol from Lignocellulosic Biomass Part II Production of Cellulases and Hemicellulases Rajeev K Sukumaran contents Abstract.................................................................................................................. 142 10.1 Introduction .................................................................................................. 142 10.1.1 Cellulases ........................................................................................ 142 10.1.2 Hemicellulases ................................................................................ 144 10.

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  • This report has been prepared by Environmental Resources Management the trading name of Environmental Resources Management Limited, with all reasonable skill, care and diligence within the terms of the Contract with the client, incorporating our General Terms and Conditions of Business and taking account of the resources devoted to it by agreement with the client. We disclaim any responsibility to the client and others in respect of any matters outside the scope of the above.

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  • 7 Bioethanol from Starchy Biomass Part I Production of Starch Saccharifying Enzymes Subhash U Nair, Sumitra Ramachandran, and Ashok Pandey contents Abstract.................................................................................................................... 87 7.1 Introduction ..................................................................................................... 88 7.2 Enzymes Hydrolyzing α-1,4-Glucosidic Linkages......................................... 88 7.2.1 Endo-amylases (EC 3.2.1.1) ................................................................ 88 7.2.

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