Simutaneous absorption of NOx and SO2
The long-term objective of this research was to develop a cost-effective technology that can absorb NOx and SO2 simultaneously from a post combustion process. This research addressed the following two major challenges facing scientists and engineers in related field: 1) Effective oxidation of insoluble NO and 2) the hostility of SO2 on the absorption of NO. Both problems prevail in existing technologies, but we believe that it can be solved by good designs in reactors and selecting a novel catalyst. This proposed research will start from a bench scale batch reactor and end at a continuously operating prototype with solvent regeneration. The performances of the systems are expected to be improved by increasing the contact areas between the gas and liquid phases using spray droplets. The associated fundamentals was investigated in the three-year period by laboratory experiments.
More information can be found in this PPT Presentation
This project was supported by NSERC and Imperial Oil Ltd.
Portable PM2.5 Monitoring Device
Last three decades saw a great economic growth in China. As a result, air pollution resulted from energy production and transportation has been extraordinary in almost every major Chinese city. PM2.5 level has been so high in China that it is now a national priority. Citizens desire an affordable portable PM2.5 monitor for their personal use.
Existing PM2.5 measurement tools are primary offline based on gravimetric method. They take samples from the air and weight the filters after a certain sampling duration. This type of approach lasts from a few hours to a few days, depending on the PM2.5 concentration in the air. In addition, Europe and the American companies have been developing online PM2.5 monitoring devices. These instruments are primarily for government air monitoring network; they are far from being affordable to a typical Chinese family.
Our team has developed a real-time portable PM2.5 monitoring technology. Ongoing aims at its application to transportation sector.
Funding is provided by NSERC and a Chinese private company