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Texas study finds PHEV use could increase ozone at night, decrease ozone during the day

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A study by researchers at the University of Texas found that in general, use of plug-in hybrid electric vehicles (PHEVs) can lead to an increase in ozone during nighttime hours (due to decreased scavenging from both vehicles and EGU stacks) and a decrease in ozone during daytime hours.

Ozone 218
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UK researchers report that alcohols in windshield washer fluid are major unreported source of VOCs emissions from cars, including EVs

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The levels of these non-fuel-derived gases will likely remain unchanged, even as more drivers transition from gas-powered to electric vehicles. These emissions are independent of the vehicle energy/propulsion system and therefore applicable to all road vehicle types including those with battery-electric powertrains. Cliff et al.

Emissions 397
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Toyota Central R&D Labs develops new ferrihydrite material that effectively removes ozone from air

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(Japan) report in the journal Angewandte Chemie the development of a mesoporous two-line ferrihydrite (2LFh)—ferrihydrite is a widespread mineral composed of iron, oxygen, and water—that could lead to a new generation of ozone filters in electrostatic devices and aircraft applications. removal; it showed about 95 % O 3.

Ozone 218
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PSI team develops web tool for consumers to compare environmental impact of passenger cars in detail

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Depletion of fossil energy resources [kg oil-eq.]. Depletion of metal resources [kg iron-eq.]. Deterioration of the ozone layer [kg CFC-11-eq.]. For the future, the electricity mix can also be manually entered to test the effects of different scenarios. Depletion of fresh water reserves [m 3 ]. in review).

Mariner 435
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MIT team proposes SCR emission control for hybrid aviation turbines; reducing NOx by 95%

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At cruising altitude, airplanes emit a steady stream of NO x into the atmosphere, where the chemicals can linger to produce ozone and fine particulates. We quantify the effects of these trade-offs in terms of emissions reduction and fuel burn increase using representative engine cycle models provided by a major aero-gas turbine manufacturer.

MIT 268
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California Air Resources Board posts revised draft of strategy to reduce “Super Pollutants”

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The California Air Resources Board (CARB) has posted a revised draft of California’s proposed Short-Lived Climate Pollutant (SLCP) Strategy. The major sources of methane in California are livestock (~30% of the state’s methane emissions), followed by landfills and oil and gas production.

Pollution 150
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Northwestern/Princeton study explores air quality impacts of aggressive conversion to EVs

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Researchers from Northwestern University and Princeton University have explored the impact on US air quality from an aggressive conversion of internal combustion vehicles to battery-powered electric vehicles (EVs). coal, oil, natural gas, and biomass). Seasons and times of day. at high EV adoption fractions. Schnell et al.