If the development of oil sands is to continue, improved environmentally friendly processes with minimal footprint have to be implemented. Thus steam will either have to be faced out or it will have to be augmented by chemicals such as solvents. The major drawback of solvent is the perceived low mass transfer rates. However, if the bitumen solvent interactions are enhanced through convection, this gap may be eliminated. This proposal evaluates mass transfer enhancements in bitumen solvent systems, both liquid and vapour, both experimentally and through computer simulation.
We develop advanced computational models of particle-laden flows and flows through porous media at the scale of the particle/pore to better understand the momentum, heat and mass transfer that govern these flows. We use the models through performing parallel computing on large supercomputers and generate a large quantity of detailed data in the core of the flows. We then analyze these data and coarse-grain them in the form of average transfer coefficients that can be later utilized in macroscopic models.
This proposed project will support our ongoing efforts in scanning and screening existing technologies and de-bottlenecking key technology barriers in converting low-cost biomass residues to renewable natural gas in British Columbia pulp, paper and lumber mills. Specifically, we will focus on developing a bauxite residue (f.k.a., red mud) based catalyst for the removal of tar from gasification syngas to yield clean syngas for methanation to biomethane, and evaluating and improving the commercial methanation catalyst.
Currently, most electrodes used for optoelectronic application are coated with metal oxides as a conductive substrate, but are expensive to produce. There have been many studies on finding a cheaper and flexible alternatives such as graphene. Asphaltenes are polyaromatic hydrocarbons defines by their solubility class that has a similar structure to graphene. Asphaltenes are found in crude oil, tar sands and coal, but create several problems in the oil industry and are considered a waste due to its tendency to aggregate.
Wide-Complex Tachyarrhythmia (WCT) is an abnormality in which the heart rate is elevated and QRS complex duration is increased. An electrocardiogram (ECG) is a simple and quick test used to review heart functioning, so ECG images can be used to determine whether a patient is having an abnormal heart rhythm such as WCT. A WCT diagnosis based on the ECG can be difficult as it can take a lot of time and considerable expertise to make an accurate interpretation.
Clean renewal energy sources, such as hydro, wind, and solar energies, have been receiving increasing demands for sustainable societal developments. Due to their intermittent nature, rechargeable batteries are required for the storage of these renewal energy sources. Current rechargeable batteries constructed with conventional inorganic cathode materials have restricted energy densities, along with sustainability issues.
Carbon dioxide is produced from the combustion of fossil fuels and as a by-product of many chemical processes. The increasing concentration of CO2 in the atmosphere has now been decisively linked to global climate change. The use CO2 as a carbon-building block has attracted much attention due to its low cost, ease availability, and its potential to substitute fossil fuel-based feedstocks, in addition to the clear positive environmental effect of removing it from the atmosphere.
You may have heard of monitoring heart rate in a smartphone using lasers for measurement. Now think of having the wristband or some other wearable gadget and your health status is monitored in your smartphone or your doctors' cloud. Glucose is one of these parameters that can be measured by this wearable device but the challenge is measuring the concentration of glucose in sweat which is almost 1000 times lower than the glucose in the blood. Our group could measure these ultra-low levels of glucose in synthetized sweat.
To ensure oil and gas pipelines operate safely, instrumented inspections and assessments are completed on a recurring frequency. A common and valuable inspection method is In-line inspection (ILI). This form of inspection uses a measurement device (ILI tool) that is propelled through the pipeline by product flow and the tool identifies and sizes anomalous conditions along the inside and outside walls of the pipeline that could affect the pipes ability to contain the product.
The ever-growing demand for energy storage, especially with high density and low-cost, has both academia and industry research communities working hard to develop and optimize energy storage technologies. Among the top energy storage technologies are Lithium metal batteries (LMBs) which have an exceptionally high specific capacity (3860 mA h g?1) in comparison to that of the conventional graphite-based LiC6 batteries (372 mA h g?1).