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Skip to Search Results- 2Turuga, Annapurna Sri Sowmya
- 1Cantillo Olave, Cristhian Camilo
- 1De Man, Allison B
- 1Figueroa, Diana C
- 1Fong, Shirley
- 1Mirshamsi, Sepideh
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Fall 2019
During thermal cracking of bitumen, olefins are formed via free radical reactions and are mainly concentrated in the naphtha and distillate cut of the upgraded bitumen. Olefins are undesirable in the upgraded bitumen product because they are associated with equipment fouling. As a result, these...
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DESULFURIZATION OF OXIDIZED BITUMEN USING MICROORGANISMS THROUGH PROCESS-BASED DIRECTED EVOLUTION
DownloadSpring 2014
Many Rhodococcus species are capable of utilizing the 4S biodesulfurization pathway to convert dibenzothiophene (DBT) to 2-hydroxybiphenyl (2-HBP) and sulfite, the latter of which is partially incorporated into cell biomass. The first steps of the 4S pathway involve the oxidation of DBT into...
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EFFECT OF SOLVENT DEASPHALTING PROCESS ON THE PROPERTIES OF DEASPHALTED OIL AND ASPHALTENES FROM BITUMEN
DownloadFall 2017
Asphaltenes are a solubility class of bitumen known to have undesirable properties. As asphaltenes are insoluble in paraffinic solvents, they can be separated from bitumen by adding a solvent such as n-pentane or n-heptane to produce better quality deasphalted oil (DAO). This process is called...
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Hydrothermal Treatment of Bitumen Froth at 250 °C: Impact on Bitumen Properties and Role of Clay Minerals
DownloadFall 2023
Bitumen froth produced in the hot water extraction process of mined oil sands consists of about 60 wt % bitumen, 30 wt% water and 10 wt% mineral solids. To convert the bitumen in bitumen froth into a marketable product, the water and solids need to be separated. Solvent-based froth treatment...
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Fall 2013
In industrial visbreaking processes, the conversion typically takes place at ~450 °C and the extent of conversion is limited by the coking propensity of the feed. Some of the older literature on bitumen upgrading reported that it was possible to substantially upgrade the straight run product at...
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Spring 2012
Modelling of solvent extraction was studied using 1,2,3,4–tetrahydronaphtalene (tetralin) and Poplar coal (lignite). A kinetic model was developed taking into account temperature, mass transfer limitations and dominating events (physical or chemical) during coal liquefaction. It was found there...
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Fall 2023
Cantillo Olave, Cristhian Camilo
The coal industry in Canada boasts abundant reserves, with significant potential for value addition through innovative processes. Oxidative coal dissolution (OCD) emerges as a promising method to generate high-value products from coal, using air as the oxidant, making it a cost-effective and...
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Spring 2016
Asphaltenes are a solubility class and it is the material in oil that is insoluble in a paraffinic matrix. It is a major contributor to problems in many petroleum operations such as production, transportation, refining, precipitation, crude oil emulsification, and de-emulsification, and high...
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Spring 2014
The stability of the ether bond affects coal dissolution during direct coal liquefaction and aliphatic ethers are reportedly the most reactive of the oxygenate classes during liquefaction. Some ether compounds are also persistent to high temperature during coal pyrolysis. The thermolysis of ether...