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Study finds significant slowdown in decrease of NOx emissions in US; implications for air quality management

Green Car Congress

They found that levels of pollutants that can contribute to the formation of ground-level ozone, or smog, have failed to continue a fairly steady decline as estimated by the US Environmental Protection Agency. These results show that meeting future air quality standards for ozone pollution will be more challenging than previously thought.

Emissions 150
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Study Finds Environmental and Tailpipe Pollutants Benefits in Using Biodiesel in Construction Vehicles

Green Car Congress

Vehicle emissions scenarios included: baseline petroleum diesel (PD) in-use measurement data based on PEMS; B20 (20% biodiesel) in-use measurement data based on PEMS ; estimated B20 vehicle emissions based on EPA’s engine dynamometer data; and estimated B20 vehicle emissions based on NREL’s chassis dynamometer data. higher for NO x.

Pollution 150
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The importance of considering non-exhaust traffic emissions; the role of EVs

Green Car Congress

As the trend toward cleaner technologies with reduced exhaust emissions continues through the use of catalytic converters, diesel particulate filters (DPF), and improved fuels and engines, non-exhaust PM will soon surpass exhaust emissions and may well become dominant by 2020 both in terms of emissions and contributions to air quality.

Exhaust 150
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New Comprehensive Lifecycle Energy and Emissions Inventory Includes Non-Operational Components; Large Aircraft Can Perform Better than Light Rail

Green Car Congress

Chester and Horvath (2009). Chester and Horvath (2009). Mikhail Chester and Arpad Horvath inventoried on-road, rail, and air travel to determine energy consumption, greenhouse gas (GHG) emissions, and criteria air pollutant (CAP) emissions (excluding PM, lead, and ozone due to lack of data). Click to enlarge.

Light 150
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UNEP Report Calls for More Sophisticated Approach to Developing Biofuels; Limitations of Current LCA Studies

Green Car Congress

Here, RME show advantages for primary energy and GHG, but disadvantages in terms of acidification, eutrophication and ozone depletion. From 2007 to 2008, the share of ethanol in global gasoline type fuel use was estimated to increase from 3.78% to 5.46%, and the share of biodiesel in global diesel type fuel use from 0.93% to 1.5%.

Ozone 186
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Israel MoEP enforcing vehicle exclusion rules in Haifa Bay Low Emission Zone; $2.8M to retrofit 700 diesel trucks with DPFs

Green Car Congress

The traffic prohibitions are part of the creation of Israel’s first low-emission zone, an area restricted to polluting diesel vehicles. Implementation of best available technologies (BAT) led to a 65% decrease in NMVOC emissions between 2009 and 2015. MoEP thus launched a new environmental action plan for Haifa Bay in 2015.

Emissions 150