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Showing 1 to 20 of 21 for “"Lignocellulosic materials"”.
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Pretreatment and enzymatic hydrolysis of lignocellulosic materials
… aims to increase the efficiency of utilizing lignocellulosic materials, which have great potential as future energy and chemical feed stocks, and may finally substitute the diminishing hydrocarbon resources. This work involved two main parts: (a) comparison of efficiency of different …
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Reduced extracellular electron shuttles increase hydrogen production and substrate utilization in pure culture Clostridium beijerinckii fermentation
… bioreactors for possible industrial application. Lignocellulosic materials, the most abundant biomaterial on the earth, have been considered promising renewable substrates for biofuel production; however, better strategies need to be developed to increase sugar utilization in the fermentation …
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ΜΟΝΤΕΛΟΠΟΙΗΣΗ ΤΗΣ ΠΥΡΟΛΥΣΗΣ ΛΙΓΝΟΚΥΤΤΑΡΙΚΩΝ ΥΛΙΚΩΝ
THE PYROLYSIS OF VARIOUS LIGNOCELLULOSIC MATERIALS WAS STUDIED IN ORDER TO MODELIZE THE KINETICS OF BOTH PRIMARY AND SECONDARY REACTIONS AS ALSO TRANSPORT PHENOMENA. MODELLING WAS BASED ON EXPERIMENTAL DATA OBTAINED BY MEANS OF THERMAL ANALYSIS TECHNIQUES. THE MODEL OF INTERMEDIATE STEP COMPOSITION …
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Effects of Alkaline Hydrogen-Peroxide Treatment of Crop Residues on Cell Wall Carbohydrate Utilization by Ruminants (Lignocellulose)
… could be removed by chemical treatment. Treating lignocellulosic materials with an alkaline (pH 11.5) solution of hydrogen peroxide (.26 g hydrogen peroxide per g lignocellulosic material; AHP) increased the ability of ruminal microbes to colonize wheat straw (WS) as measured using scanning …
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High-performance liquid chromatographic methods for quantitative assessment of degradation products and extractives in pretreated lignocellulose.
… motivated research into renewable fuels from lignocellulosic biomass. Among energy alternatives, biomass-derived ethanol represents one of the more promising commodities for long-term sustainability of transportation fuels. Herbaceous agricultural residues, such as corn stover, represent a …
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Characterization of Laser Modified Surfaces for Wood Adhesion
… alters the natural biopolymer organization of lignocellulosic materials in a way that promotes adhesion when hot pressed using typical industrial equipment. Laser optimization was determined through mechanical and microscopic observation. It was determined that a mild level of laser surface …
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Lignin biodegradation: reduced oxygen species
… the degradation of the lignin fraction in lignocellulosic materials. A comparative study of two different fennentation schemes, designed to degrade lignin in 1ignocellu1osic materials on a large scale, indicated that solid state fermentation of such materials led to greater lignin …
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The effects of the expression levels of cellobiose transporter and β-Glucosidase on ethanol fermentation
… strategies to enhance bioethanol production from lignocellulosic fermentation. Through cofermentation with cellobiose and xylose, it is achieved to utilize most abundant two sugar substrates in lignocellulosic materials at the same time and to enhance xylose utilization by yeast through boosting …
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Biofuels from lignin and novel biodiesel analysis
… a pulp mill into a multi-purpose biofuels, biomaterials, and biopower production facility in which these products are produced in an environmentally compatible and sustainable manner. A key challenge in this process is the recovery of lignin from process streams such that it can be utilized in …
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Enzymatic removal of dung from cattle hides
… major components of the composition of dung are lignocellulosic materials (lignin, hemicellulose and cellulose). This project concerns solubilising the dung faster, to reduce soaking time by targeting these components with enzyme technology, using hemicellulases, cellulases, and laccases from …
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Effects Of De-Polymerization Of Cellulose In Producing Sugar From Cellulosic Biomass At Low-Temperature
<p>Lignocellulosic biomass is an abundant, renewable and environmentally friendly raw materials that can be converted into biofuels as an efficient alternative energy source. Sugar production is one of the key steps in converting biomass to fuels and chemicals. In order to enhance the accessibility …
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Organic Fillers in Phenol-Formaldehyde Wood Adhesives
… chemical compositions that are typical for lignocellulosic materials, whereas corn cob residue was distinctly different owing to the high pressure steam digestion used in its preparation. Also, all fillers had low surface energies with dominant dispersive effects. Surface energy of corn cob …
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Lignin Transformation and Characterization of Pyrolytic Products
<p>Lignocellulosic materials derived from plants have the ability to serve as feedstocks in place of depleting petroleum and coal for production of fuels and chemicals. Lignin forms about 30% of lignocellulosic material, and is the second most abundant non-fossil organic carbon source in the …
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Dépolymérisation de la cellulose dans des mélanges fluides binaires et ternaires riches en CO2 à hautes pressions
… effective dissolution and separation of complex lignocellulosic materials, such as wood. Based on hydrogen bonding and solubility parameter concepts, different fluids were selected: pure carbon dioxide and water, the binaries: CO[subscript 2] - water; CO[subscript 2] - methanol and CO[subscript …
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Plant cell wall degrading enzymes and their potential application to biofuel production
… Plants cell walls which are composed mostly of lignocellulosic materials (lignin, cellulose, and hemicellulose) are recalcitrant and are difficult to breakdown. This therefore represents a major limitation in the conversion of plant biomass to biofuels. Microbes have evolved a plethora of …
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Towards Sustainable Braking: Effects of Alternative Ingredients on the Tribological Properties of Friction Materials
… the sustainability aspects of brake friction materials. This was done by following two different approaches, both of which involved the use of alternative ingredients in the friction material composition. The new ingredients were chosen based on their properties while also considering aspects …
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Engineering and evaluation of yeast strains for the production of lactic acid from cellulosic sugars
Terrestrial biomass consists largely of lignocellulosic materials. Abundant in nature, lignocellulosic biomass can be cultivated easily on land otherwise unsuitable for traditional crops or be harvested from crop waste, such as corn stover. After pretreatment and hydrolysis, the lignocellulosic …
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Biomass pretreatment toward efficient hydrolysis for sustainable biofuel applications
… to the recalcitrant nature of the raw biomass materials to further biological conversion, their structural degradation often requires severe and costly pretreatment processes such as heat, physical and chemical treatments to disturb and fractionate the biomass. Significant research effort has …
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Integration of Extrusion and Clean Fractionation Processes as a Pretreatment Technology of Lignocellulosic Biomasses
<p>Lignocellulosic materials are considered the future of the biofuels and biobased products industry, thus creating a chance for petroleum independence. Due to its widespread availability and low cost of production, lignocellulose has huge potential to be a renewable and sustainable energy source. …
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Rheology And Organic Filler Interactions in Phenolic Resin Formulations
… tack of the adhesive. These organic fillers are lignocellulosic materials that are made of lignin, cellulose, and hemicellulose. Not much is known about the interactions of these organic fillers and the polymer resin. Rheological studies in our lab have shown that not all of the additions to the …
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