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Twelve European Union Member States exceeded one or more of the emission limits set by the EU National Emission Ceilings (NEC) Directive, according to recent official data for 2010 reported to the European Environment Agency (EEA). The pollutant for which most exceedances were registered was NO x. Jacqueline McGlade.
A study by European researchers has found that two-stroke (2S) scooters, although constituting a small fraction of the fleet, can dominate urban vehicular pollution through organic aerosol and aromatic emission factors up to thousands of times higher than from other vehicle classes. Click to enlarge.
The European Community’s air pollutantemission inventory report released by the European Environment Agency finds that in 2007, sulphur oxides (SO x ) emissions were down by 72 % from 1990 levels. EU-27 emissions of all four pollutants were lower in 2007 than in 2006.
On this basis, and of Pareto efficiency, Emissions Analytics argues, until battery-electric vehicles can reach certain performance characteristics, government and industry support should switch immediately from EVs to full hybrids to create maximum welfare. Every air pollutant is more than 90% its limit.
Levels of two major air pollutants have been reduced significantly since lockdowns began in response to the COVID-19 pandemic, but a secondary pollutant—ground-level ozone—has increased in China, according to new research. For comparison, columns over the same time periods are shown for 2019. —Jenny Stavrakou.
Emission rates for the 1.7 A new study led by researchers at the University of Michigan compared regulated and unregulated emissions from both light-duty passenger car (1.7 Biodiesel also reduces smoke opacity, PM, CO, and NMHC emissions, although NO x may increase, depending on operating conditions. L engines at idle.
Comparisons of life-cycle emissions from LUC phase for (a) sugar cane ethanol and (b) soybean biodiesel. The pollutants are NMHC, CO, NO x , TPM, PM 2.5 Estimates of the life-cycle GHG emissions from biofuels are largely based on regional and global models of the land-use change (LUC) impacts from biofuels.
One label design prominently features a letter grade (ranging from A+ to D) to communicate the vehicle’s overall fuel economy and greenhouse gas emissions performance. Greenhouse Gases: Tailpipe carbon dioxide emissions in grams per mile and a slider bar comparing the vehicle’s CO 2 emissions to those of all other vehicles.
In addition to a range of up to 1000 km, the coach reduces CO 2 emissions by 25%, NO x emissions by 85% and particle pollution by 96%, minimizing criteria pollutantemissions that affect health to nearly zero. They comply with regulation R66.02 greater and the complete system weighs less.
A new briefing paper from Imperial College London estimates that in 2021, 52% of all small particle pollution from road transport came from tires and brakes. Despite this, research on the environmental and health impacts of tire wear has been neglected in comparison to the research and innovations dedicated to tackling fuel emissions.
Comparison of brake thermal efficiency and specific fuel consumption at rated power (ICOMIA Mode 5), hydrogen vs. gasoline engines. It, or a scaled-up version, could also provide a solution for the Asian motor vehicle fleet, in which two-stroke engine vehicles constitute a major share—and contribute significantly to air pollution.
Comparison of aggregated EU-27 emission projections and ceilings reported in 2010. The EU-27 and its Member States must meet legally binding limits for four air pollutants set by the National Emission Ceilings Directive (NEC Directive). Source: EEA. Click to enlarge.
The study’s findings highlight the importance of considering exposures—especially the proximity of emissions to people—when evaluating environmental health impacts for EVs, the team said. For EVs, combustion emissions occur where electricity is generated rather than where the vehicle is used. 1 ), for four pollutants.
A study led by environmental health scientists at Columbia University Mailman School of Public Health examined the release of vapors from gasoline station vent pipes, and found benzene emissions were 10 times higher than estimates used in setback regulations that determine how close schools, playgrounds, and parks can be to the facilities.
Sulfur dioxide emissions from shipping have sharply decreased in EU ports due to stricter EU rules for sulfur content in fuels used by ships at berth or at anchor in ports, according to a team at the EU Joint Research Centre (JRC). by weight, while previously, outside of Sulphur Emission Control Areas, a. sulphur content of up to 4.5%
FTP cycle-weighted tailpipe emissions of N 2 O, NO x , and the sum of NMOG and NO x. The minimum in NO x and NMOG emissions for midlevel ethanol blends points to future opportunities for emission reductions from FFVs. Credit: ACS, Hubbard et al. Click to enlarge. E40); and the new range for high-level ethanol blends (E55, E80).
positive or negative—and magnitude of net climate forcing from BC emissions), currently available scientific and technical information provides a strong foundation for making mitigation decisions to achieve lasting benefits for public health, the environment, and climate. emissions in 2005. Earlier post.). Earlier post.).
The high concentrations found in snow samples from disparate regions suggest microplastics—which may contain varnish, rubber, or chemicals used in synthetic fabrics—cause significant air pollution. For comparison, the researchers investigated samples from the remote Swiss Alps and the City of Bremen in northwest Germany.
A report published by the California Air Resources Board (CARB), in consultation with the California Energy Commission (CEC), shows California investments to clean up old, polluting school buses have already exceeded $1.2 billion over the next five years for zero-emission school buses and associated charging infrastructure.
This puffy line is not just exhaust from the engine, but a change in the clouds that’s caused by small airborne particles of pollution. Pollution from ships creates lines of clouds that can stretch hundreds of miles. The calculated concentration of cloud droplets without emissions along the shipping route (yellow line).
Results from a new modeling assessment of contamination in the Athabasca Oil Sands Region (AOSR) suggest that officially reported emissions of polycyclic aromatic hydrocarbons (PAHs) in that region have been greatly underestimated. Accounting for evaporative emissions (e.g., Average emissions densities from Shen et al.
Comparison of optimized start of injection of advanced diesel combustion for brake thermal efficiency, NO x , PM, THC, and CO of diesel (open bar); HTFT (gray bar); and LTFT (black bar) fuels. HECC produces a decrease in both NO x and PM emissions while maintaining, or even increasing, fuel efficiency. Credit: ACS, Lilik and Boehman.
Renault’s comparison of the carbon footprint of EV and ICE vehicles over production, operation and end of life. The publication gives the opportunity for an “apples-to-apples” comparison between the environmental impacts of the two types of powertrains: same manufacturer, same model, same boundary conditions. Emission standard.
The main reason is that new concepts in emissions mitigation in the engine and in exhaust aftertreatment systems require advanced sensors for their operation. In 1993, five to seven sensors were required to meet the Euro emissions standard 1 set for European countries. during the next five years from 2014 to 2019. Regional variation.
If greenhouse gas (GHG) emissions from indirect land use (iLUC) changes are included in the analysis, the differences increase to between 16% and 118% (33% on average). A careful evaluation of environmental impacts other than GHG emissions in those policies would be important to minimize the unintended consequences of biofuel development.
Comparison of the potential reduction in emissions with the application of lower sulfur 0.5% While that report projected vessel activity, it did not explore the environmental impacts of increased shipping in terms of air emissions or the potential climate impacts from increases in short-lived climate pollutants such as black carbon.
Second, they found that while much of the air pollution policies have focused to date on the electricity sector, damages from farms are now larger than those from utilities. Indeed, farms have become the largest contributor to air pollution damages from PM2.5 related emissions. —Tschofen et al. Peter Tschofen, Inês L.
Ricardo demonstrated its new real-world driving emissions measurement service ( earlier post ), and discussed the first results from its road side vehicle monitoring research, at the Air Quality & Emissions Show (AQE) in the UK earlier this week. Ricardo launched its vehicle emission measurement service in April 2017.
A scatter plot of CO, as a tracer for pollution, versus CO 2 , as a tracer for the amount of combustion, for 2002 and 2010. The magnitude of the drop in VOC levels was surprising, even to researchers who expected some kind of decrease resulting from California’s longtime efforts to control vehicle pollution. ppbv/ppmv to 10.7
Global and regional-mean temperature responses to identical aerosol emissions in different regions. However, aerosols have a much shorter lifespan in the atmosphere than the gases responsible for global warming, resulting in an atmospheric distribution that varies by region, especially in comparison to carbon dioxide.
New methods of testing and simulating air quality should be considered in order to help policy makers have a more accurate understanding of how emissions affect air pollution levels, new research suggests. The researchers compared current techniques used to describe atmospheric chemical reactions against more historical techniques.
However, the fuel-cycle PM 10 , PM 2.5 , SO 2 , and NO x emissions of EVs could be up to five times higher than those of ICEVs (internal combustion engine vehicles) and CNGVs. emissions are less important because of the low contribution of light duty vehicles to national PM 10 and PM 2.5 While the increases in PM 10 and PM 2.5
The entire life cycle of the passenger cars is taken into account, including the manufacture of the vehicles and the environmentally relevant emissions from driving. Noise emissions [Person-Pascal/second]. The Carculator graphically presents these values for all selected vehicles in parallel, for ease of comparison. in review).
By including upstream emissions from fuels, GHG emissions from cities exceed those attributed to direct end-use by up to 24% (for Toronto). By including upstream emissions from fuels, the researchers found that GHG emissions attributable to cities exceed those from direct end use by up to 24%. Tonnes CO 2 e/capita.
Comparison of the derived brake thermal efficiency of the ORNL research engine (LSE) running LPG to 2019 production Cummins ISB diesel. domestic NO x emission regulations for medium- and heavy-duty vehicles by an order of magnitude by 2027. The unique high stroke-to-bore engine design (1.5:1) Splitter et al. and 32.6%, respectively.
Comparison of Hg emissions in 2005 and 2010, by selected sector and region. Unintentional emission sectors: Coal burning, ferrous- and non-ferrous (Au, Cu, Hg, Pb, Zn) metal production, cement production. Intentional-use sectors: Disposal and incineration of product waste, cremation emissions, chlor-alkali industry.
Kelly and his team used a multifaceted approach to explore the impact of the Congestion Charging Scheme on air quality: a variety of emissions and exposure modeling techniques, analysis of air monitoring data, and a newly developed assay for the oxidative potential of particulate matter collected on filters at urban background and roadside monitors.
Researchers at the Norwegian University of Science and Technology (NTNU) have compared the emissions resulting from the production, use, and end-of-life of electric and internal combustion engine vehicles (EVs and ICEVs) in a full life-cycle analysis (LCA). This has led to a general perception of EVs as an environmentally benign technology.
Using biodiesel in construction vehicles offers promising environmental benefits in terms of reduced tailpipe emissions as well as reductions in fuel cycle emissions of selected pollutants, according to a new study by researchers at North Carolina State University. higher for NO x. lower for PM. higher for HC. lower for CO.
Battery electric cars emit less greenhouse gases and air pollutants over their entire life cycle than petrol and diesel cars, according to a European Environment Agency (EEA) report. Emissions are usually higher in the production phase of electric cars, but these are more than offset by lower emissions in the use phase over time.
The indicators take a holistic approach to assessing many important aspects of the intersection of bioenergy and sustainability, including greenhouse gas emissions, biological diversity, the price and supply of a national food basket, access to energy, economic development and energy security. Click to enlarge. Environmental pillar.
Emulsification of diesel with ethanol is one of the possible approaches to improve fuel economy and reduce emissions of pollutants from diesel engines. Even though this emulsified fuel gives better brake thermal efficiency and gives less SFC, SD, and PM based on the performance and emissions, respectively, in comparison to diesel no.
In particular, the study led by Drew Shindell found that methane emissions have a larger warming impact due to those interactions than accounted for in current carbon-trading schemes or in the Kyoto Protocol. Because the latter was a $126 billion/year market in 2008, even small differences in GWPs can have large economic consequences.
Included in the 34 FY2010 SBIR Phase I awards are the following biofuel and emissions-reduction projects: Technology Specialists, “Thermochemical Biofuels Production from Biomass Waste Materials”, $70,000. Emissions Reduction for Two-Stroke Engines”, $70,000. Small particulate emissions, such as those that fall within the PM2.5
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