Remove 2012 Remove Exhaust Remove Ozone
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Berkeley study identifies diesel as main source of vehicular secondary organic aerosols

Green Car Congress

Contribution of gasoline and diesel exhaust to SOA over 0% to 50% diesel fuel use. The study determined that, depending on a region’s fuel use, diesel exhaust is responsible for 65% to 90% of vehicular-derived SOA, with substantial contributions from aromatic and aliphatic hydrocarbons. Gentner et al. Click to enlarge. Earlier post.).

Diesel 281
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HEI ACES study of lifetime animal exposure to New Technology Diesel Engine exhaust finds no lung cancer

Green Car Congress

The first study to conduct a comprehensive evaluation of lifetime exposure to new technology diesel exhaust (NTDE)—i.e., exhaust from heavy-duty diesel engines meeting EPA 2007 and later emissions requirements—has found no evidence of carcinogenic lung tumors. This phase was conducted at SwRI in 2012.

Exhaust 150
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Comparative study finds that B20 increases emission rates of a number of pollutants in both light- and medium-duty diesel engines at idle

Green Car Congress

They found that the level of emissions of regulated and unregulated pollutants in diesel exhaust depends on fuel, load, engine calibration, and exhaust aftertreatment technology. Unregulated pollutants also include ozone precursors and bioaccumulative and toxic compounds. L) and medium-duty (6.4 L/2002 calibration and 6.4

Pollution 231
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Study estimates ~4M children worldwide develop asthma each year because of NO2 air pollution

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NO 2 is just one component of air pollution, which is made up of many pollutants (including particulate matter, ozone, carbon monoxide), which are known to have numerous adverse effects on health. NO 2 is a pollutant formed mainly from fossil fuel combustion, and traffic emissions can contribute up to 80% of ambient NO 2 in cities.

Pollution 360
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Harvard team finds that the phase of atmospheric secondary organic material affects chemical aging; may require revision of regional and global climate models

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In a liquid phase, the organic materials would absorb other compounds such as ammonia or ozone very easily and then progress through a series of chemical changes (known as chemical aging) to form particles that reflect or absorb sunlight, or form clouds. The experiments at Harvard, using particles of ? In the atmosphere, the particles of ?-pinene

Climate 252
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PNNL team finds correlation between reaction mechanism for zeolite SCR catalyst for NOx aftertreatment and bacterial enzyme catalysis

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Recently, researchers have produced a new zeolite that is surprisingly stable and makes very little nitrous oxide from nitric oxide, a chemical that depletes ozone. 2012) Cu-SSZ-13 Catalysts for the Selective Catalytic Reduction of NO x with NH 3 : Catalyst Characterization and Reaction Mechanisms (12 AIChE meeting). Feng Gao et al.

Li-ion 225
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California ARB Seeks Further Reductions of Diesel Emissions at State Rail Yards

Green Car Congress

The top set of recommendations call for: Replacing existing switch and medium horsepower locomotives with cleaner locomotives (2010-2013); Retrofitting switch and medium horsepower locomotive with particulate matter and oxides of nitrogen (NO x ) after-treatment devices (2012-2016); and. NO x helps create ground-level ozone, or smog.

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