28 Jul '12, 2pm

Researchers report on potential long-range atmospheric emissions impacts of increased ethanol fuel use in North America

North American ethanol emissions increase by 1040 GgC/y (2.6×) in the All-E85 scenario, and by 175 GgC/y (1.3×) in the EISA scenario. Emissions from the continental US increase by 3.4× and 1.4× for the two scenarios. The relative perturbation is weakest in summer because of large natural emissions of ethanol (and other VOCs). In the All-E85 scenario, wintertime North American ethanol emissions increase by 600%, with ethanol alone then making up 6.7% of the total continental VOC source at this time of year. For the same scenario during summer, ethanol emissions increase by 70%, and account for only 1.7% of the total seasonal VOC source. For both scenarios, increased ethanol emissions lead to higher atmospheric acetaldehyde concentrations—up to 14% during winter and by up to 5% during summer for the All-E85 scenario (but by only 2% and 1% for the EISA scenario). This acetald...

Full article: http://www.greencarcongress.com/2012/07/millet-20120728.html

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