Green Car Congress
MARCH 4, 2022
6PPD is an antioxidant and antiozonant that helps prevent the degradation and cracking of rubber compounds caused by exposure to oxygen, ozone and temperature fluctuation. Conversely, another study indicated that zebrafish and Japanese medaka can withstand even very high amounts of 6PPD-quinone. g/L, respectively.
Green Car Congress
JULY 24, 2009
A) shows the base case peak concentrations for O 3 (ozone), ClNO and HCl in parts-per-billion by volume (ppbv). (B) Under extreme circumstances, this previously unknown chemistry could account for up to 40 parts per billion (ppb) of ozone; the current US Environmental Protection Agency (EPA) 8-hour average standard is 75 ppb.
Green Car Congress
MARCH 16, 2012
eutrophication; ET = ecological toxicity; FEC = fossil energy consumption; WU = water use; LO = land occupation; “The rest” includes acidification; smog formation; ozone layer depletion; and human health effects. Error bar shows regional variations for E85. GW = global warming; Eut. Credit: ACS, Yang et al. Click to enlarge.
Green Car Congress
FEBRUARY 5, 2020
NO x is a precursor for both ground level ozone and secondary PM 2.5 Manufacturers continue to optimize diesel emission controls, such as DOC, DPF and SCR, in order to promote uniform catalyst coating, improve NO x conversion efficiency, reduce back pressure on the engine, and reduce thermal mass.
Green Car Congress
JANUARY 13, 2010
In all of this, we must also recognize that climate change will affect other parts of our core mission, such as protecting air and water quality, and we must include those considerations in our future plans. Protecting America’s Waters. Expanding the Conversation on Environmentalism and Working for Environmental Justice.
Cars That Think
DECEMBER 19, 2021
Up there, 10 to 50 kilometers above the Earth’s surface, ozone molecules absorb the sun’s ultraviolet light, protecting life far below. Even less is understood about the potential risks to people and the environment—could the particles deplete the ozone layer, for example, or significantly alter the weather? about 0.6 °C.
Green Car Congress
OCTOBER 19, 2009
Here, RME show advantages for primary energy and GHG, but disadvantages in terms of acidification, eutrophication and ozone depletion. There is an obvious link between environmental impacts estimated by life-cycle impact assessments and water quality problems described at the regional scale. Source: “Assessing Biofuels”.
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