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Southwest Research Institute engineers have developed the next generation of clean diesel engine technology to reduce hazardous nitrogen oxides (NO x ) and carbon dioxide emissions while minimizing fuel consumption. g/hp-hr NO x emissions). Making a relevant impact on pollutants requires a whole system approach.
A new report by the Union of Concerned Scientists (UCS) finds that the rising use of ride-hailing services is increasing carbonemissions, with ride-hailing trips producing nearly 70% greater emissions compared to the trips they are replacing. Error bars for bus and rail emissions represent variability among cities.
An international team of scientists, led by NTU Singapore, has linked increased air pollution to an uptick in cases of lung adenocarcinoma (LADC) worldwide. g/m 3 ) increment of black carbon is associated with a 12% increase in LADC incidence globally. Black carbon is a pollutant that is classified as under PM 2.5.
The US Environmental Protection Agency (EPA) is proposing new, stronger standards to promote clean air and reduce pollution from heavy-duty vehicles and engines starting in model year (MY) 2027. This proposed rulemaking builds on and improves the existing emission control program for on-highway heavy-duty engines and vehicles.
New WHO has issued new Global Air Quality Guidelines (AQGs) that reduce levels of key air pollutants, some of which also contribute to climate change. Since WHO’s last 2005 global update, there has been a marked increase of evidence that shows how air pollution affects different aspects of health. Source: WHO. nitrogen dioxide (NO?)
Data from the ESA’s Tropomi (TROPOspheric Monitoring) instrument on board the Copernicus Sentinel-5P satellite shows the variation of nitrogen dioxide (NO 2 ) emissions over China from December to March. The drop in emissions also coincided with Lunar New Year celebrations, which usually sees a similar drop in emissions each year.
Jacobson, professor of civil and environmental engineering at Stanford University, suggests that carbon capture technologies are inefficient and increase air pollution. All sorts of scenarios have been developed under the assumption that carbon capture actually reduces substantial amounts of carbon. —Mark Jacobson.
opposed-piston heavy-duty diesel engine has achieved performance results that comply with pending 2027 requirements of the US Environmental Protection Agency (EPA) and California to reduce sharply emissions of nitrogen oxides (NO x ). Achates Power’s innovative 3-cylinder, 10.6L Furthermore, the 10.6L Earlier post.).
Urban planners should plant hedges—or a combination of trees with hedges—rather than just relying on roadside trees if they are most effectively to reduce pollution exposure from cars in near-road environments, according to a new study from the University of Surrey. The best way to tackle pollution is to control it at the source.
The California Air Resources Board last week approved the final proposed 2022 Scoping Plan ( earlier post ), a roadmap to reduce demand for petroleum by 94%, cut air pollution by 71%, reduce greenhouse gas emissions 85%, and reach carbon neutrality by 2045.
Shipping emissions form a significant part of the commodity supply chain’s carbon footprint, particularly for those commodities reliant on the mass transport of low-grade ores and concentrates. Roskill has analyzed the trend in carbon intensity of shipping using spodumene concentrate as an example. Regulatory background.
A “well-to-wheel” life cycle assessment (LCA) by a team from synthetic fuels producer Greyrock ( earlier post ), and the National Renewable Energy Laboratory (NREL) has determined the potential reduction of greenhouse gases and criteria pollutantemissions from the use of synthetic fuels directly converted from flare gas. 0.37, 42.4,
In an open-access report in the journal Environmental Pollution , researchers from UCLA and the University of Chicago estimate that California’s wildfire carbon dioxide equivalent (CO 2 e) emissions from 2020 (~127 mmt CO 2 e ) are approximately two times higher than California’s total greenhouse gas (GHG) emission reductions since 2003.
The study, set in Singapore, suggests that better air quality will bring about climate co-benefits in reducing electricity generation via lower household demand, and thus mitigating carbonemissions. This is important for policymakers when forecasting and influencing future emissions paths in the context of climate change.
In a recent open-access paper published in ACS’ Environmental Science & Technology , researchers from the University of York report that alcohols in windshield washer fluid account for a larger fraction of real-world vehicle emissions than previous estimates have suggested. —Cliff et al.
Heavy-duty trucks can emit drastically higher levels of pollution when not equipped with required emissions controls. Transport companies must comply with California’s rule to improve air quality and protect adjacent schools and communities from breathing these toxic pollutants. The company, headquartered in Thomasville, N.C.,
A new study led by researchers from Northwestern University projects that if electric vehicles replaced 25% of combustion engine cars currently on the road, the United States would save approximately $17 billion annually by avoiding damages from climate change and air pollution. The open-access paper is published in AGU’s journal GeoHealth.
in 2030 even if India were to comply with its existing pollution control policies and regulations. However, aligning sustainable development policies to the implementation of advanced emission control technologies could provide NAAQS-compliant air quality to about 85% of the Indian population. levels by 20-30% over the next five years.
The funds will support the deployment of thousands of zero-emission trucks, school buses and transit buses to deliver clean air benefits to communities hit hardest by the impacts of pollution from medium- and heavy-duty vehicles. 15 million zero- and near-zero-carbon fuel production and supply. $15
GTI has released a site-specific engineering design titled “ Low-Carbon Renewable Natural Gas (RNG) from Wood Wastes ”. The RNG product with very low carbon intensity could be used for carbonemission reductions in the transportation, industrial, commercial, and residential energy sectors.
A team from Empa - Swiss Federal Laboratories for Materials Science and Technology and FPT Motorenforschung reports in an open-access paper in the journal Fuel on the performance and emission characteristics of an 11-liter heavy-duty compression ignition engine which was optimized specifically for DME (dimethyl ether) combustion. from 16.5)
Findings of a study led by the Barcelona Institute for Global Health (ISGlobal) and published in the European Respiratory Journal suggest that a significant proportion of childhood asthma cases may be attributable to outdoor air pollution, and that these cases could be prevented. and black carbon (BC). and black carbon (BC).
The US Department of Transportation’s Federal Highway Administration (FHWA) announced a Notice of Proposed Rulemaking ( NPRM ) for states and municipalities to track and reduce greenhouse gas (GHG) emissions. The proposed rule is expected to publish in the Federal Register next week.
Hyundai Motor Group will collaborate with the Saudi Arabian Oil Company (Aramco) and King Abdullah University of Science and Technology (KAUST) jointly to research and develop an advanced fuel for an ultra lean-burn, spark-ignition engine that aims to lower the overall carbon dioxide emissions of a vehicle.
Neste has signed an agreement to charter two new lower-emission product tankers from Terntank. The tankers are designed with foldable suction sails and dual-fuel engine enabling the use of e-methanol as fuel, which is produced with Power-to-X technology using captured carbon and renewable energy.
The companies are joining efforts to implement the carbon-negative UBQ thermoplastic ( earlier post ) into auto parts manufactured by Motherson Group for the automotive industry. UBQ GHG Neutralizer additives enable processors to directly compensate cO 2 -equivalent emissions (GHG) generated by plastic polymers.
Researchers from Korea and France have shown that iron–nitrogen-doped carbon is an efficient and durable electrocatalyst for selective nitric oxide reduction into hydroxylamine. Among the major pollutants, nitrogen oxide (NO x ) accumulation can cause severe respiratory diseases and imbalance in the Earth’s nitrogen cycle.
Southern California Gas Company (SoCalGas) announced it will be working together with Sierra Northern Railway, Gas Technology Institute (GTI), and other technical experts to develop and test a zero-emission hydrogen fuel cell engine for a switcher locomotive. Earlier post.). SoCalGas is committing another $500,000 to advance the research.
Funds provided through this proposed solicitation include $24 million for projects eligible under CARB’s Fiscal Year 2019-20 Funding Plan for Clean Transportation Incentives for Low Carbon Transportation Investments and the Air Quality Improvement Program, and $20.1
HFCs are considered to be super pollutants because they trap heat in the atmosphere thousands of times more effectively than carbon dioxide, the most prevalent greenhouse gas. California is required to reduce HFC emissions 40% below 2013 levels by 2030 under Senate Bill 1383. This equipment often leaks refrigerants over time.
Freight transportation is a pillar of the US national economy, but while long-haul trucks account for less than 6% of the vehicle miles traveled over US highways, they account for about 40% of the emissions of air polluting particulate matter and about 55% of nitrogen oxides, the precursor to ozone in the atmosphere, the study said.
All the participating jurisdictions are members of the Transportation and Climate Initiative (TCI), a regional collaboration of Northeast and Mid-Atlantic states and the District of Columbia that seeks to improve transportation, develop the clean energy economy, and reduce carbonemissions from the transportation sector.
The proposal for coal and new natural gas power plants would avoid up to 617 million metric tons of total CO 2 through 2042—equivalent to reducing the annual emissions of 137 million passenger vehicles, roughly half the cars in the United States.
Major ridesourcing companies Uber and Lyft have promised all-electric fleets by 2030 in an effort to reduce their carbon footprint. Overall, electrification reduces net external costs to society by 3–11% (5–24¢ per trip), depending on the assumed social cost of carbon. —Mohan et al. Mohan et al.
A new study by the International Council on Clean Transportation (ICCT) estimates heavy fuel oil (HFO) use, HFO carriage, the use and carriage of other fuels, black carbon (BC) emissions, and emissions of other air and climate pollutants for the year 2015, with projections to 2020 and 2025. Click to enlarge.
By demonstrating that electric HGV transportation is commercially viable, this service will contribute to encouraging wider investment in technology and innovation that will support the haulage sector’s efforts to reduce emissions and air pollution.
High levels of air pollutants, especially fine particulate matter (PM 2.5 ) and to a lesser extent, ozone, may be linked to a heightened risk of developing mouth cancer, suggests a study by a team of Taiwanese researchers. Diagnoses of mouth cancer were then linked to local area readings for air pollutants taken in 2009.
Infants born to women exposed to high levels of air pollution in the week before delivery are more likely to be admitted to a newborn intensive care unit (NICU), suggests an analysis by researchers at the US National Institutes of Health (NIH). Short-term exposure to most types of air pollutants may increase the risk for NICU admission.
Regulated emissions for all test fuels over the cold-start and hot-start LA92 cycles. The emissions of CO 2 for the high-aromatics E10 were higher than the Tier 3 E10, E30, and E78 blends. Their paper is published in the ACS journal Energy & Fuels. The study found that higher ethanol blends—i.e., —Yang et al. 8b02206.
This is a game-changer for both nuclear energy and carbon-free hydrogen production for numerous industries. It offers a view of the energy structures of the future, which will integrate systems to maximize energy use, generator profitability and grid reliability all while minimizing carbonemissions.
California’s latest greenhouse gas data shows that while the state continues to stay below its 2020 target for emissions, there is much more work to do to achieve carbon neutrality by 2045. California statewide GHG emissions dropped below the 2020 GHG Limit in 2016 and have remained below the 2020 GHG Limit since then.
The California Energy Commission (CEC) approved a $95-million plan for critical clean transportation investments to expedite the adoption of zero-emission vehicles (ZEVs) and help the state reach its climate, air quality and other goals. million for ZEVs, as well as zero-emission infrastructure and related workforce development.
It is the only diesel engine operating on the road capable of meeting CARB’s 2027 regulation, which requires a 90% reduction in emissions of NO x compared to current standards. The project team also demonstrated that the engine reduces carbon dioxide by 10%. liter engine. CALSTART leads the extensive demonstration project team.
A team at King Abdullah University of Science and Technology (KAUST) has developed a data-driven artificial intelligence (AI) framework to design liquid fuels exhibiting tailor-made properties for combustion engine applications to improve efficiency and lower carbonemissions. —Kuzhagaliyeva et al.
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