Track 4: Environmental Analysis
In this research, the costs, energy use, and air pollutant and greenhouse emissions of hydrogen pathways will be analyzed and compared to other transportation energy and technologies.
The task of developing and evaluating strategies to reduce emissions of urban air pollutants and greenhouse gases is complicated. There are many ways to produce and use energy, many sources of emissions in an energy lifecycle, and several kinds of pollutants (or greenhouse gases) emitted at each source.
This research will explore a number of typical or potentially promising hydrogen pathways (e.g., the coal to hydrogen pathway, the natural gas to hydrogen pathway, and the biomass to hydrogen pathway) from a lifecycle perspective.
Although direct greenhouse gases (GHGs) have been researched and modeled extensively, indirect species, which influence climate by altering levels of direct species, have received relatively little attention. In this work, we estimate the CO2 equivalent impact of one of the most important, complex, and poorly understood indirect GHG, oxides of nitrogen (NOx). These results are of great interest to policy makers, as human activities (energy and fuel use) are a significant source of NOx emissions.