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Less traffic on the roads during the first COVID-19 lockdown in the UK led to a reduction in air pollution but may have caused potentially damaging surface ozone levels to rise, according to a new study led by researchers at the University of York. The 25–75% range is shown by the shaded area. These results are a cautionary tale.
According to a study commissioned by the Washington, DC-based Propane Education & Research Council (PERC), NO x emissions measured from propane autogas school buses were substantially lower than those measured from diesel school buses. For the stop-and-go route, NO x emissions were 34 times higher for the diesel school bus.
This research, published in the journal Separation and Purification Technology , shows that ozone can be used to remove not only SO x but also NO x from fossil fuel combustion exhaust streams. In this study, to improve absorption performance of SO 2 and NO 2 , we added ozone in exhaust gas. Osaka et al. 2018.12.077.
2010 engines emissions reduction relative to 2010, 2007, and 2004 US emission standards. The study, the Phase 2 Report of the comprehensive Advanced Collaborative Emissions Study (ACES). These reductions came while emissions of fine particles were also 92% lower than the 2010 standard 99% lower than 2004 emissions.
The US Environmental Protection Agency (EPA), USDepartment of Justice (DOJ), and California Air Resources Board (CARB) announced a proposed settlement with Daimler AG and its American subsidiary Mercedes-Benz USA, LLC resolving alleged violations of the Clean Air Act and California law associated with emissions cheating.
Clean Diesel Technologies, Inc. million in funding by the New York State Energy and Research Development Authority (NYSERDA) to supply dieselemission control technology as part of a New York City ferry emission reduction program. has been awarded $1.3
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. —Cliff et al.
Black carbon and tropospheric ozone are harmful air pollutants that also contribute to climate change. Reducing black carbon and tropospheric ozone now will slow the rate of climate change within the first half of this century, the study said. Click to enlarge. °C (within a likely range of 0.2-0.7
Other research has shown that carbonyls directly influence physiological response to diesel exhaust particles and can also contribute to secondary organic aerosol formation. In the Tianjin study, they team fueled a four-cylinder light-duty diesel engine fueled with CFT and DF, identifying 13 individual carbonyl compounds in the exhaust.
The Health Effects Institute (HEI) has launched two new studies funded under RFA 21-1, Quantifying Real-World Impacts of Non-Tailpipe Particulate Matter Emissions. The new studies are: Improved Characterization of the Real-World Contributions and Impacts of Non-tailpipe Particulate Matter Emissions ,” led by Greg Evans, University of Toronto.
BASF has inaugurated its new production plant for mobile emissions catalysts in ?roda The emissions catalysts produced there will be used by manufacturers of light duty gasoline vehicles and light and heavy duty diesel vehicles to meet more stringent Euro 6/VI emissions regulations. ska, a Special Economic Zone near Wroc?aw,
US EPA Region 9 8-hour ozone trends, 1979-2000. These State Implementation Plans (SIPs) are the roadmaps to meeting the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) of 0.08 In 1997, EPA first established the 8-hour ozone standard, which replaced the older 1-hour ozone standard (0.12 Source: EPA.
The California Air Resources Board today approved a statewide plan for attaining the federal health-based standard for ozone, typically experienced as smog. The 2022 State Implementation Plan Strategy identifies the state’s control strategy for meeting the federal 70 parts per billion, 8-hour ozone standard over the next 15 years.
Contribution of gasoline and diesel exhaust to SOA over 0% to 50% diesel fuel use. SOA contributions from the two sources are equivalent at 6% diesel fuel use. These compounds in un-burned gasoline and diesel fuel dominate vehicular emissions of reactive gas-phase carbon that have the potential to form SOA.
In California’s Los Angeles Basin, levels of volatile organic compounds (VOCs) pollutants have decreased by about 98% since the 1960s, even as area residents now burn approximately three times as much gasoline and diesel fuel. This indicates that the main VOC source in the LA basin is likely gasoline vehicle emission.
Renault recently made public the findings of an internal study, published first in October 2011, detailing and comparing the lifecycle assessments (LCAs) of the battery-electric and two internal combustion engined versions (gasoline and diesel) of the Renault Fluence. Renault assessed the diesel Fluence dCi (1.5L Diesel Fluence dCi.
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 L) diesel engines at idle and load, using a biodiesel blend (B20) and conventional ultralow sulfur diesel (ULSD) fuel. L engines at idle.
The California Air Resources Board (ARB) issued a grant solicitation for demonstration projects on zero-emission off-road equipment. Off-road equipment is a significant source of diesel PM, as well as NO x emissions that lead to ozone and secondary PM, ARB noted.
VIP, which is part of the Carl Moyer air quality program, is a streamlined, diesel on-road voucher program that helps the small independent truck owner get a cleaner-running truck sooner. VIP is part of the state’s overall plan to cut toxic dieselemissions 85 percent by 2020.
CO 2 and NO x certification test data for heavy-duty diesel engines certified from 2002 through 2019. The transportation sector was responsible for over 7 million tons of NO x emissions in the US in 2014, with 50% of this sector’s NO x attributed to heavy-duty on- and off-road vehicles and equipment. Source of data: US EPA (2019).
EPA’s TAG program aims to reduce air pollution in areas of the nation with the highest levels of ambient ozone and fine particulate matter (PM 2.5 ) pollution. Last year, Hyundai Motor also announced its NorCal Zero project, also known as Zero-Emission Regional Truck Operations with Fuel Cell Electric Trucks. Earlier post.)
Researchers at Tohoku University in Japan have identified a way to reduce harmful NO emissions produced by ammonia fuel during combustion. Although the space and time-averaged emission (STAE) of NO was found to decrease with increase in the global equivalence ratio (global ?) Copyright : Taylor & Francis.
Five technology paths for very-low-NO x and GHG emissions from heavy-duty natural gas engines. The “Pathways to Near-Zero-Emission Natural Gas Heavy Duty Vehicles” report, authored by GNA on behalf of Southern California Gas Co. An 80% reduction of GHG emissions is targeted for 2050, relative to 1990 levels. Click to enlarge.
The Pennsylvania Department of Environmental Protection (PA DEP) awarded $516,637 in clean diesel grants to four organizations. The clean diesel program’s goal is to improve air quality by decreasing emissions from diesel-powered transit bus and school bus fleets.
The California Air Resources Board’s latest state inventory of greenhouse gas emissions shows that California’s GHG emissions continue to decrease. Trends in California GHG Emissions. Changes in emissions by Scoping Plan sector between 2000 and 2017. Emissions are organized by the categories in the AB 32 Scoping Plan.
Commercial workboat engines are staying in service more than two times longer than predicted by the US Environmental Protection Agency (EPA), according to new research from the Diesel Technology Forum (DTF) and Environmental Defense Fund (EDF). This report underscores that more, older engines remain in service today.
Reducing emissions from mobile sources is key to the San Joaquin Valley meeting federal ambient air quality standards. Heavy-duty trucks, such as the ones targeted under this funding, are the single largest source of NO x and diesel PM in the Valley, and are critical to ensuring that goods are moved throughout the State and nation.
Additional diesel PM reductions in 18 major CA railyards with five new locomotive measures. The California Air Resources Board directed its staff to take steps to provide further locomotive and rail yard emission reductions beyond those achieved by existing US Environmental Protection Agency and state regulations and agreements.
The study found that 60% of the winter primary hydrocarbon hydroxyl radical reactivity in London is from those diesel-related hydrocarbons; the authors predicted that the longer-chain HCs contribute up to 50 % of the ozone production potential in London. —Dunmore et al.
The At-Berth Regulation is a critical tool for CARB to cut harmful toxic dieselemissions from ships docked in California ports, and we hope this penalty will send a message that violators will pay a hefty price if they fail to comply. The goal of CARB’s At-Berth Regulation is to reduce dieselemissions from ocean-going vessels (OGVs).
Under the ACT Rule, Oregon requires medium- and heavy-duty vehicle manufacturers to sell zero-emission vehicles as a certain percentage of sales, beginning with the 2025 vehicle model year. In Oregon, heavy-duty trucks and buses are responsible for nearly 23% of total transportation sector greenhouse gas emissions.
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.
million to transit projects that improve emissions while supporting emerging clean fuel and advanced propulsion technologies. TIGGER III grants, which will also use a competitive selection process, will be awarded based on a project’s ability to reduce energy consumption and greenhouse gas emissions and provide a return on the investment.
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. Deterioration of the ozone layer [kg CFC-11-eq.]. Noise emissions [Person-Pascal/second]. Sample results from Carculator. Depletion of fresh water reserves [m 3 ].
The program will demonstrate that a suite of commercially available, EPA-rail-certified engines present a near-term, low-risk solution to create an affordable RNG hybrid line-haul locomotive with near zero emissions while simultaneously improving fuel cost by 50%. g/bhp-hr of NOx, a reduction of 400 times. g/bhp-hr of PM.
The California Air Resources Board (CARB) voted to approve an updated plan for the South Coast Air Basin aimed at further cutting smog-forming emissions to attain the federal 8-hour ozone standard. The plan also includes current efforts to transform California’s vehicle fleet to zero-emission. —CARB Chair Mary D.
The new CNG fleet will replace older diesel-powered trucks. One of the more lasting contributions we can make in our community is to protect the environment by reducing ozone-forming emissions wherever possible. Continuing its string of local deployments ( earlier post ) Republic Services, Inc.
The traffic prohibitions are part of the creation of Israel’s first low-emission zone, an area restricted to polluting diesel vehicles. All of these measures will lead to the goal we set for ourselves this year, to turn the city of Haifa into a low-emissions zone that will be restricted to polluting vehicles.
BPP), a subsidiary of BP plc, requiring control technology expected to reduce benzene by an estimated seven tons per year, other hazardous air pollutants (HAP) by 28 tons per year, and other volatile organic compound emissions (VOC) by 372 tons per year at its Whiting Refinery in Indiana.
has paid $422,500 in penalties for supplying gasoline and diesel fuel in violation of California regulations designed to protect air quality. Higher levels of olefin mean more smog will be formed from tailpipe emissions since hydrocarbons, including olefin, react with sunlight and other pollutants to form smog. Chevron USA Inc.
The new CNG fleet will replace older diesel powered trucks. According to the US Environmental Protection Agency, each new CNG solid waste and recycling truck reduces ozone-forming emissions by as much as 80% when compared to older diesel powered trucks. Waste and recycling company Republic Services, Inc.
Among the non-CO 2 pollutants are hydrofluorocarbons (HFCs), methane, tropospheric ozone, and black carbon soot. Ramanathan and Victor highlight the importance of aggressively reducing CO 2 emissions, but note that the road ahead will be long, difficult, and expensive, and that “in the meantime, a fast-action plan is needed.”
The Houston-Galveston Area Council (H-GAC) has partnered with the Center for Transportation and the Environment (CTE) and Smith Electric Vehicles Corporation (Smith Electric) to reduce vehicle emissions from delivery trucks in the Houston-Galveston region.
NO x emissions have not been decreasing as expected in recent years (2011–2015) when comparing top-down estimates from satellites and surface NO 2 measurements to the trends predicted from the US Environmental Protection Agency’s emission inventory data, according to a new study by an international team of researchers.
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