Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 89 for “"Bioethanol"”.
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Bioethanol Production from Macroalgae
… processes to convert brown seaweeds into bioethanol. The main kelp species chosen as biomass candidates were Laminaria digitata, Laminaria hyperborea, Saccharina latissima and Alaria esculenta due to their abundance in Scottish waters and their identified potential for …
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Catalytic Membrane Reactor for Extraction of Hydrogen from Bioethanol Reforming
… for high- purity hydrogen extraction from bioethanol reforming. Conventional membrane systems employ hydrogen permselective materials such as palladium, polymer membranes, which present several material challenges including embrittlement, thermal degradation and poisoning by hydrocarbons …
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Optimization of the production of bioethanol from duckweed (Lemna minor)
This project has investigated the production of bioethanol from duckweed (Lemna minor) biomass. The project includes four main sections: firstly, analysis of the chemical characteristics of duckweed, particularly the polysaccharides of the cell wall; secondly, exploration of suitable commercial …
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Two-stage acidic-alkaline pretreatment of Miscanthus for bioethanol production
Pretreatment is the rate-limiting step for bioethanol production from lignocellulosic biomass, and subsequently intensive studies have been undertaken to improve the pretreatment efficiency. However, so far most pretreatment methods failed to achieve desirable sugar recovery from both cellulose and …
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Pretreatment Methods for the Efficient Conversion of Soybean Products to Bioethanol
… in the conversion of biomass to bioethanol, is restricted by the morphological structure of plant cell wall. The recalcitrance of hemicellulose and lignin needs to be removed or compromised prior to the treatment of biomass with enzymes for the hydrolysis of cellulose and …
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Entwicklung und Optimierung eines Prozesses zur Produktion von Bioethanol aus lignocellulosehaltiger Biomasse
… Optimierung eines Prozesses zur Produktion von Bioethanol. Die Synergie aus effizienter Vorbehandlung mit NaOH, Reaktortyp (Freifallmischer) und einem effizienten Enzymkomplex aus Penicillium verruculosum ermöglichte die Herstellung von bis zu 13 Vol.-% Ethanol. Die Hydrolyse und Fermentation …
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Enhancing Bioethanol Fermentation through Removal of Acetic Acid Using Liquid-Liquid Extraction
… the most ubiquitous fermentation inhibitors in a bioethanol production facility which slows down the bioethanol production and reduces its yield through inhibition of the ethanol producing microorganisms. The use of liquid-liquid extraction has shown to be a viable tool to remove the acetic acid …
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Design of heterogeneous bifunctional catalyst for upgrading bioethanol through the Guerbet reaction
Catalytic conversion of ethanol through the Guerbet reaction to higher carbon number molecules allows efficient transformation of biomass to liquid fuels and commodity chemicals. A selective and stable heterogeneous catalyst is required to render this conversion possible in an economic way. The …
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Reducing the energy demand of bioethanol through salt extractive distillation enabled by electrodialysis
… conversion technique is used to produce bioethanol from corn and cellulosic feedstock is the high energy demand for recovering and purifying ethanol, which is mainly due to the low concentration of ethanol in the fermentation broth and the challenging water-ethanol vapor liquid …
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Comparative analysis of sorghum and other South African grains for sustainable bioethanol production
… and ultimately replace it as the fuel of choice. Bioethanol is a form of fuel that is obtained from natural materials such as biomass. Starch and sugar containing materials are the primary carbon sources for bioethanol production and a range of feedstocks are currently being exploited for this …
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Understanding the Role of Biomass and High Shear Bioreactor Parameters in Bioethanol Production
… that using a feedstock size of about 8mm for bioethanol production can reduce the energy cost of biomass size reduction to a greater extent, which is the need of the hour. Switchgrass, com stover, and big bluestem required the torque values of 165.2,70.5, and 99.4 N-m, respectively, for their …
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The potential of sorghum as a feedstock source for bioethanol production in Nigeria
… potential of sorghum as a feedstock source for bioethanol production in Nigeria. Sorghum is a cereal with high tolerance for varied environmental and climatic stresses. It can produce starch-rich grains, sweet stalk juice and high lignocellulosic biomass, depending on the crop variety and …
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Biological Strategies and Mathematical Approaches for Limiting Bacterial Contaminants and Chemical pollutants In Bioethanol Fermentations
… has become one of the primary feedstocks for bioethanol production for the past several years in the U.S. However, the argument of whether to use food as biofuel has led to a search for alternative non-food sources. Consequently, industrial research efforts have become more focused on low-cost …
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The application of ultrasound in the bioconversion of brewer’s and distiller’s spent grains to bioethanol
In recent years bioethanol (fuel ethanol derived through fermentation) has become the leading alternative to currently utilised liquid transportation fuels, possessing the benefits of being both sustainable and carbon neutral. If this position is to be maintained, it is clear that the feedstocks …
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Modeling and Production of Bioethanol from Mixtures of Cotton Gin Waste and Recycled Paper Sludge
In this study, the hydrolytic kinetics of mixtures of cotton gin waste (CGW) and recycled paper sludge (RPS) at various initial enzyme concentrations of Spezyme AO3117 and Novozymes NS50052 was investigated. The experiments showed that the concentrations of reducing sugars and the conversions of …
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Determining Zambia’s potential for bioethanol production as a motor vehicle fuel to meet climate objectives by 2040.
… economic planning. This research looked at bioethanol as an alternative to gasoline in trying to mitigate the challenges highlighted in depending on fossil fuels for the transport sector. The research investigated three locally produced feedstocks namely sweet potato, cassava and sugarcane. …
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Machine learning techniques applied to the production of bioethanol from the characterization of lignocellulosic biomass (Theobroma cacao l.)
En los últimos años, la demanda de combustibles fósiles ha ido en aumento y esto ha generado una escasez en las reservas mundiales lo que limita el crecimiento económico; ejemplo de ello es Tocache, una de las provincias más aisladas y pobres del Perú. En este estudio se aborda el uso de residuos …
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Evaluation of three heterologous xylose isomerase genes for the fermentation of plant biomass to bioethanol in Saccharomyces cerevisiae
Diminishing oil reserves are causing scientists to explore renewable and sustainable replacement fuel sources. One candidate is plant biomass, although without modification its energy-rich sugars remain unavailable to the standard industrial yeast Saccharomyces cerevisiae for fermentation to the …
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Enhanced bioethanol fermentation from mixed xylose and glucose using free and immobilized cultures: mathematical model and experimental observation
Bioethanol plays a significant role in the world of liquid biofuel. However, majority of bioethanol is produced from edible food crops such as corn and sugarcane that causes an increase in demand for vacant lands for food production and, subsequently, increase in the cost of food manufacturing. …
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