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Full-Text Articles in Engineering

Asphalt Modification By Utilizing Bio-Oil Esp And Tall Oil Additive, Sheng Tang Jan 2010

Asphalt Modification By Utilizing Bio-Oil Esp And Tall Oil Additive, Sheng Tang

Graduate Theses and Dissertations

Bio-oil is a dark-brown, mobile liquid derived from the thermo-chemical processing of biomass. Bio-oils generally contain water and lignin. Lignin is a highly-available, well-studied carbohydrate derivative known for its antioxidant properties. For asphalt pavements, oxidation can cause deterioration via long-term aging and eventually result in cracking. Therefore, bio-oil could potentially serve as an antioxidant additive in asphalt mixtures. The main objective of this research is to evaluate the effects of lignin-containing bio-oil for utilization in asphalt binders, and attempt to optimize the bio-oil modification formula by adding other additives. Using bio-oil as an antioxidant in asphalt production could prove to ...


Understanding The Product Distribution From Biomass Fast Pyrolysis, Pushkaraj Ramchandra Patwardhan Jan 2010

Understanding The Product Distribution From Biomass Fast Pyrolysis, Pushkaraj Ramchandra Patwardhan

Graduate Theses and Dissertations

Fast pyrolysis of biomass is an attractive route to transform solid biomass into a liquid bio-oil, which has been envisioned as a renewable substitute for crude oil. However, lack of fundamental understanding of the pyrolysis process poses a significant challenge in developing cost-effective pyrolysis based technologies for producing transportation fuels. The fundamental knowledge of pyrolysis pathways, product distribution and underlying mechanisms will have a direct and significant impact on the reactor design, strategic operation and kinetic modeling of the pyrolysis process. However, this knowledge has remained obscure due to the complexity of the pyrolysis process and lack of well established ...