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 35 for “"Thermochemical Conversion"”.
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Fast microwave-assisted thermochemical conversion of biomass for biofuel production
… solution. Pyrolysis and gasification belong to thermochemical processes which are currently the most appropriate and widely used among all the biomass utilization technologies. Microwave irradiation can provide heating for biomass pyrolysis and gasification, and has many advantages over …
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Thermochemical Conversion of Swine Manure to Produce Oil and Reduce Waste
The results showed that the thermochemical conversion of swine manure to produce oil is technically feasible. The process could be a promising technology for waste reduction and renewable energy production from organic waste.
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Thermochemical conversion of high-density polyethylene (HDPE) to value-added products using cobalt-based catalysts
… 13% of the total waste plastic. Pyrolysis is a thermochemical method of treating plastic thermally under an inert atmosphere to convert HDPE into valuable products, such as wax, oil, gas, and char. The current thesis explores the utilization of cobalt-based catalysts in the HDPE pyrolysis. The …
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Multi-scale chemistry modeling of the thermochemical conversion of biomass in a fluidized bed gasifier
The thermochemical conversion of biomass to fuels via syn-gas offers a promising approach to producing fungible substitutes for petroleum derived fuels and chemicals. In order for these fuels to be adopted, they must be produced in a cost-competitive way. Unfortunately, there exist a number of …
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Solar thermochemical conversion of CO2 into fuels using Ni-Ferrite driven redox reactions: Thermodynamic efficiency analysis
… gas. One promising solution is solar-driven thermochemical CO₂ splitting (CDS), which can convert CO₂ into carbon monoxide (CO)—a vital component for producing syngas and fuels. This study examines the thermodynamic performance of nickel ferrite (NiFe2O4) as a redox material in solar …
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Thermodynamic evaluation of cobalt-ferrite based redox reactions for solar thermochemical conversion of CO2 into fuels
The solar thermochemical conversion of carbon dioxide into synthetic fuels represents a promising pathway for mitigating anthropogenic CO₂ emissions while enabling the production of carbon neutral energy carriers. This study investigates the use of cobalt ferrite (CoFe₂O₄) as a redox-active metal …
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Thermochemical conversion of biomass to hydrogen via fast pyrolysis and catalytic reforming: feedstock variability for distributed reforming
Includes bibliographical references (leaves 120-127).
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Surface-Layer Semivolatiles Impact on Hydrochar Application For Fuel and Environment
… would contribute to greenhouse gas emissions. Thermochemical conversion processes transform agro-industrial waste biomass into liquid bio-oils and solid chars, which have applications as fuels and environmental remediation materials. This dissertation investigates the properties and …
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ΜΕΛΕΤΗ ΤΟΥ ΜΗΧΑΝΙΣΜΟΥ ΠΡΟΚΑΤΕΡΓΑΣΙΑΣ ΓΙΑ ΤΗΝ ΜΕΤΑΤΡΟΠΗ ΤΗΣ ΒΙΟΜΑΖΑΣ ΣΕ ΚΑΥΣΙΜΑ ΚΑΙ ΧΗΜΙΚΑ: ΕΠΙΔΡΑΣΗ ΣΤΗ ΣΤΕΡΕΑ ΦΑΣΗ
… N-BUTANOL). THE EFFECT OF PRETREATMENTS ON THERMOCHEMICAL CONVERSION TO CHARCOAL, ON ENZYMIC HYDROLYSIS WITH ASPERGILLUS NIGER, TRICHODERMA VIVIDE AND FUSARIUM OXYSPORUM CELLULASES AND ON BIOETHANOL PRODUCTION WITH F . OXYSPORUM CELLULASES AND ON BIOETHANOL PRODUCTION WITH F. OXYSPORUM WAS …
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Small-Scale Batch-Fed Biomass Gasification and Combustion
… a staged combustion process. This allows the thermochemical conversion of the solid fuel to form gases, liquids (tars) and solid char, to be separated in time and location from the combustion of the released gases and tars. A much deeper understanding of the ongoing fundamental processes in …
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A comparison of integrated biomass to electricity systems
… form. This is the first time that all three thermochemical conversion technologies have been compared in a single, consistent evaluation.The systems have been modelled from the transportation of the wood chips through pretreatment, thermochemical conversion and electricity generation. …
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Potencial técnico e econômico para a produção de Fischer-Tropsch Diesel a partir de biomassa (FT-BTL) associada à captura de carbono no Brasil
… of diesel biofuel production based on biomass thermochemical conversion through Fischer-Tropsch Synthesis in Brazil. This study conducted technical and economic analysis of the selected technological route, in order to estimate in what extension and at what costs could biomass based diesel …
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Hydrogen : what fuel cell vehicles and advanced nuclear reactors have in common
… using an advanced nuclear reactor coupled to a thermochemical conversion plant to produce hydrogen with respect using a conventional nuclear reactor coupled to an electrolysis plant? The results suggest that given the existing technical and cost uncertainties, developing an advanced nuclear …
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Technical and economic simulation of biomass pyrolysis processes for fuels and electricity
… economic and technical opportunities for biomass thermochemical conversion on the same basis. BLUNT works by building up a selected processing route from a number of process steps through which the material passes sequentially. Each process step has a step model that calculates the mass and energy …
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Theoretical exploration of char formation during lignin pyrolysis
… an overview of biomass, biofuels, and biomass thermochemical conversion techniques. Lastly, the research gap is outlined and the key research topic of the thesis is introduced. <br/><br/>In Chapter 2, we assess the stability of a range of lignin derived phenolic bio-oil compounds through the …
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Hydrothermal Process for Bioenergy Production From Corn Fiber and Swine Manure
… types of liquid fuels such hydrocarbons from thermochemical conversion of biomass have become potentially promising. This study aims at investigating the oil-formation mechanism during hydrothermal conversion of swine manure. For the purpose of mechanism research, a new method was developed …
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Design of a mobile torrefaction reactor for in-situ conversion of agricultural waste to solid biofuel
… for a significant portion of the cost of biomass conversion processes due to its low energy density and high bulk volume. The use of raw biomass also reduces the overall efficiency of thermochemical conversion processes due to high moisture content, over-oxidation of the fuel resulting from high …
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Chemistry models for major gas species estimation and tar prediction in fluidized bed biomass gasification
… bed biomass gasification (FBBG), which is the thermochemical conversion of solid biomass into combustible synthetic gas using a fluidized bed. Fluidized bed gasifiers encounter high tar concentrations at the gasifier outlet necessitating expensive downstream cleaning equipment. Apart from the …
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Environmental and economic assessment of transportation fuels from municipal solid waste
… for the production of alternative fuels. Conversion of MSW to fuel could displace petroleum-derived fuels to mitigate greenhouse gas (GHG) emissions from transportation, and also avoid the GHG emissions associated with existing waste management strategies such as landfilling. This thesis …
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Assessing the potential of biochar to restore degraded lands
… more knowledge. Biochar is the product of the thermochemical conversion of biomass through pyrolysis. Using biochar as a soil ameliorant has been increasingly advocated because of its effects on soil properties, crop productivity, and carbon sequestration. Biochar has been reported to improve …
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