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MIT team proposes SCR emission control for hybrid aviation turbines; reducing NOx by 95%

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Now, MIT engineers are proposing using an ammonia-based selective catalytic reduction (SCR) system that could result in an approximately 95% reduction in NO x emissions in exchange for a ~0.5% The trend towards smaller engine cores with smaller mass flow rates in the core stream, presents new opportunities for emissions control.

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MIT researchers improve upon methods to model urban air pollution

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Researchers at MIT have developed a new detailed air-quality model to simulate the effects of physical, chemical, and meteorological processing of highly reactive trace species in urban areas. Urban regions account for an ever increasing fraction of Earth’s population, and are consequently an ever increasing source of air pollutants.

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MIT researchers build model simulating atmospheric transport of PAHs; how chemicals get to the Arctic

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MIT researchers have built a model to simulate long-range atmospheric transport of polycyclic aromatic hydrocarbons (PAHs). The model that will be further developed as part of an NSF-funded project to track how chemicals get to remote Arctic environments. Persistent organic pollutants are chemicals of substantial international concern.

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MIT team finds lead levels higher in Indian Ocean than northern Atlantic and Pacific oceans

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MIT researchers have discovered that lead concentrations in the Indian Ocean are now higher than in the northern Atlantic and northern Pacific oceans. They are presenting their results this week at the Goldschmidt Geochemistry Conference in Montreal.

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MIT Report Finds Natural Gas Has Significant Potential to Displace Coal, Reducing Greenhouse Gas Emissions; Role in Transportation More Limited

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Natural gas will play a leading role in reducing greenhouse-gas emissions over the next several decades, largely by replacing older, inefficient coal plants with highly efficient combined-cycle gas generation, according to a major new interim report out from MIT. The study found that there are significant global supplies of conventional gas.

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Separate MIT, IEA reports both outline major expansion in role of natural gas; caution on climate benefits

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” The MIT report said that natural gas should be seen as a “ bridge ” to a low-carbon regime, rather than as the ultimate long-term solution itself. MIT: The Future of Natural Gas. Separately, the International Energy Agency (IEA) released its own report exploring the potential for a “golden age” of gas. Source: IEA.

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MITEI releases report on Electrification of the Transportation System

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The MIT Energy Initiative (MITEI) has released a report on the proceedings—and papers that informed those proceedings—of the 8 April 2010 symposium on The Electrification of the Transportation System: Issues and Opportunities. The symposium was sponsored by the MIT Energy Initiative, together with Ormat, Hess, Cummins and Entergy.