Results 261 to 270 of about 200,253 (302)
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Bioresource Technology, 2010
In this study, cattle manure was converted to bio-oil by subcritical hydrothermal liquefaction in the presence of NaOH. The effects of conversion temperature, process gas, initial conversion pressure, residence time and mass ratio of cattle manure to water on the bio-oil yield were studied.
Sudong, Yin +3 more
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In this study, cattle manure was converted to bio-oil by subcritical hydrothermal liquefaction in the presence of NaOH. The effects of conversion temperature, process gas, initial conversion pressure, residence time and mass ratio of cattle manure to water on the bio-oil yield were studied.
Sudong, Yin +3 more
openaire +2 more sources
Bio-oil Production from Biomass: Steps toward Demonstration
Energy & Fuels, 2011Metso, UPM, Fortum, and VTT have developed the worlds first integrated bio-oil production concept to provide an alternative to fossil fuels. The consortium has constructed an up to 7 tons/day bio-oil production pilot unit, which uses a bubbling fluidized-bed (BFB) pyrolysis reactor integrated with a conventional fluidized-bed boiler.
Oasmaa, Anja +9 more
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Catalytic Upgrading of Bio‐Oils by Ketonization
ChemSusChem, 2009Esterrific and ketonderful! Mixtures of acids and esters, produced by esterification reactions with alcohols in bio-oils, can be upgraded to larger ketones by ketonization reactions using a ceria–zirconia catalyst, on which acids adsorb more strongly than esters, leading to the preferential ketonization of acids followed by ketonization of esters at ...
Gärtner, Christian A. +3 more
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Bio-oil production from soybean (Glycine max L.); fuel properties of Bio-oil
Industrial Crops and Products, 2006Abstract Soybean oil cake (SOC) has been studied to produce bio-oil in a fixed-bed pyrolysis unit. The effect of pyrolysis parameters on the product yields and compositions were investigated. The highest bio-oil yield of a ca 25.8 wt.% was obtained at 400 °C pyrolysis temperature with a heating rate of 50 °C/min for particles of 0.425–0.600 mm in ...
Sevgi Şensöz, İlke Kaynar
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Electrochemical Upgrading of Bio-Oil
ECS Transactions, 2017Bio-oil produced by fast pyrolysis of biomass is a potential source of low carbon, renewable hydrocarbon fuel. However, the properties such as low heating value, incomplete volatility, acidity, instability, and incompatibility with standard petroleum fuels significantly restrict its use as fuel. The undesirable properties of pyrolysis oil result from
S Elangovan +8 more
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Bio-oil valorization: A review
Renewable and Sustainable Energy Reviews, 2013Abstract Fuels from biomass (biofuels) are used to mitigate the greenhouse gases produced through the utilization of fossil fuels. Non-edible or waste biomass can be pyrolyzed to produce bio-oil. The oil, an unstable and low energy product, can be further upgraded through hydrodeoxygenation to produce gas and/or diesel range hydrocarbons and value ...
Kathlene Jacobson +2 more
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Electrochemical Upgrading of Bio-Oil
ECS Meeting Abstracts, 2016Alternative fuels derived from biomass “biofuels” are an attractive alternative to substitute limited and non-renewable sources of energy. Bio-oil generated from the pyrolysis of biomass is a complex micro-emulsion with high levels of oxygen and acids, which lead to increases in viscosity, phase separation, and degradation as it ages.
Luis A. Diaz +6 more
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Multiphase Structure of Bio-oils
Energy & Fuels, 2005The multiphase complex structure of biomass pyrolysis oils can be attributed to the presence of char particles, waxy materials, aqueous droplets, droplets of different nature, and micelles formed of heavy compounds in a matrix of hollocellulose-derived compounds and water.
M. Garcìa-Pérez +5 more
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Hydrotreating for Bio-Oil Upgrading
2010Bio-oils are produced from various biomass sources through processes such as pyrolysis and hydrothermal treatment. While conventional oils from fossil energy sources contain less than 0.1 wt% oxygen, the oxygen content of bio-oils can reach as high as 50 wt% causing several undesired properties such as high viscosity, instability and low energy content.
Viljava, Tuula-Riitta +4 more
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