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In early 2020, UK-based independent testing firm Emissions Analytics published a study claiming that tire particulate wear emissions were 1,000 times worse than exhaust emissions ( earlier post ). —Emissions Analytics. Quoting such ratios, however, needs careful interpretation.
A new study by a team from Environmental Health & Engineering (EH&E) has found that greenhouse gas emissions from corn ethanol are 46% lower than those from gasoline—a decrease in emissions from the estimated 39% done by previous modeling. EH&E) and Adjunct Professor of Environmental Health at Harvard’s T.H. Scully et al.
of the human-made climate impact; two-thirds of this impact are caused by emissions other than CO 2 , according to a new study by researchers in Europe and the US. The study was published in the journal Atmospheric Environment. This new study is based on a thorough review of a decade of research on aviation emissions.
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. What is the contribution of NTP emissions to ambient PM in large, high traffic cities? The project will be executed as four integrated sub-studies.
A study by researchers at CU Boulder and Edinburgh Napier University finds that high-density, low-rise environments such as those found in Paris are the optimal urban form when looking to reduce greenhouse gas emissions over their whole life cycle. However, urban environmental design often neglects life cycle GHG emissions.
The open-access paper on the study is published in the RSC journal Energy & Environmental Science. The NWIS comprises mostly gas-fired generation and has a GHG emission factor of 620 g CO 2 -e kWh -1. However, under reasonably anticipated conditions with grid buffering, the GHG emissions may be comparable to SMR. Palmer et al.
A study by researchers in Australia and China has determined that global food-miles account for nearly 20% of total food-systems emissions; moving fruit and vegetables in refrigerated vehicles is particularly emissions-intensive. They found that, in 2017, food transportation added emissions equivalent to 3.0 GtCO 2 e (3.5–7.5
New analysis has found increasing emissions of several ozone-depleting chemicals despite their production being banned for most uses under the Montreal Protocol—and a loophole in the rules is likely responsible. According to the researchers, emissions from these CFCs currently do not significantly threaten ozone recovery.
An open-access paper on the study is published in the journal Resources, Conservation and Recycling. Production of Li 2 CO 3 from brine-based resources had less life cycle GHG emissions and freshwater consumption per tonne of Li 2 CO 3 than Li 2 CO 3 from ore-based resources. Kelly et al. —Michael Wang.
ClearFlame Engine Technologies, a startup developing net-zero engine technology ( earlier post ), announced the publication of an independent study that finds ClearFlame’s technology could help fleet owners and other heavy-duty truck operators lower total costs while meeting sustainability goals sooner than currently available alternatives.
A new University of Michigan study finds that making the switch to all-electric mail-delivery vehicles would lead to far greater reductions in greenhouse gas emissions than previously estimated by the US Postal Service (USPS). An all-electric fleet would reduce lifetime greenhouse gas emissions by 14.7 Earlier post.).
A new study by the European Automobile Manufacturers’ Association (ACEA) has found that there are currently 6.2 Just some 2,300—or 0.04% of the total fleet—are zero-emission trucks. Just some 2,300—or 0.04% of the total fleet—are zero-emission trucks. —ACEA’s Director General, Eric-Mark Huitema.
Africa can produce 50 million tons of green hydrogen a year by 2035, according to a new study by the European Investment Bank (EIB), International Solar Alliance and the African Union, with the support of the Government of Mauritania, HyDeal and UCLG Africa.
A study by a team from UC Riverside has assessed the potential of increasing ethanol content in California reformulated gasoline (CaRFG) by investigating the exhaust emissions from a fleet of 20 Tier 3 light-duty vehicles. Acetaldehyde and ethanol emissions responded strongly with ethanol across the fleet of 20 vehicles.
A new report by the Union of Concerned Scientists (UCS) finds that the rising use of ride-hailing services is increasing carbon emissions, 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. Source: UCS.
The EU plans to extend its climate goal of reducing CO 2 emission of new vehicles by 37.5% Fuel cell technology appears promising to reduce CO 2 emissions of heavy-duty vehicles by 15% until 2025 and 30% until 2030. As a project partner, the Thin Film Technologies (TFT) group of KIT studies moisture absorption by the PEM.
In addition to coal mining, other major sources of methane emissions globally include wetlands, agriculture, and oil and gas facilities. The study is one of the first to account for methane leaking from old, abandoned mines. The study is the first to attempt to account for methane escaping from abandoned mines.
A new study by the International Council on Clean Transportation (ICCT) assesses the near-term charging and refueling infrastructure needs for zero-emission Class 4-8 medium- and heavy-duty vehicles (MHDV) at the national and sub-national levels.
Rio Tinto has partnered with the Australian Renewable Energy Agency (ARENA) to study whether hydrogen can replace natural gas in alumina refineries to reduce emissions. This study will investigate a potential technology that can contribute to the decarbonization of the Australian alumina industry. Rio Tinto will conduct a $1.2-million
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.
Further, the aluminum top hat can meet or exceed performance criteria while using the same package space as steel, offering an opportunity for weight savings that translates into improved fuel economy and lower emissions on an internal combustion engine vehicle, or greater performance and range or reduced battery size for electric vehicles.
Light-duty vehicles, including sedans, SUVs, and pickup trucks, are currently responsible for 58% of US transportation sector emissions. In an open-access paper in Environmental Research Letters , they show that the proportional emissions benefit of electrification is approximately independent of vehicle class. Woody et al.
A preliminary analysis of global data has found that carbon dioxide emissions from fossil fuel sources reached a maximum daily decline of 17% in April as a result of drastic decline in energy demand that have occurred during the COVID-19 pandemic. Percentage change in global daily fossil CO 2 emissions, Jan-May 2020. megatonnes (5.9
Keliber, a Finnish mining and battery chemical company that aims to start the sustainable production of battery-grade lithium hydroxide, has analyzed the CO 2 emissions generated by its future production using two studies. In the comparison, Keliber shows the lowest emission intensity of 4.38 tonnes/produced tonne.
The ICCT has conducted a comprehensive global and temporal life-cycle assessment of GHG emissions from a variety of alternative passenger car powertrains and fuels. The life-cycle GHG emissions of cars registered in 2021 are compared with those of cars expected to be registered in 2030.
A study led by Norwegian climate center CICERO has found that the global warming effect of leaked hydrogen is almost 12 times stronger than that of CO 2. In this way, emissions of hydrogen can cause global warming, despite its lack of direct radiative properties. Sand et al. —Dr Sand The GWP100 of hydrogen. Sand et al.
will begin studying joint development of next-generation vehicle batteries for Nissan’s e-POWER vehicles. Nissan and Sunwoda aim to conclude a final agreement by the end of this year, based on the specific content and conditions of the study. Nissan Motor Co., and Sunwoda Electric Vehicle Battery Co., Earlier post.).
Researchers from the University of Birmingham have designed a novel adaptation for existing blast furnaces that could reduce CO 2 emissions from the steelmaking industry by nearly 90%. billion in 5 years while reducing overall UK emissions by 2.9%. If implemented in the UK alone, the system could deliver cost savings of £1.28
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 Scottish Hydrogen Fuel Cell Freight Trial (SHyFT), led by Arcola Energy, has secured funding from the Department for Transport’s Zero Emission Road Freight program for the design of a trial of hydrogen fuel cell trucks, supported by a green hydrogen refueling infrastructure in Scotland.
“Blue” hydrogen—produced through steam methane reforming (SMR) of natural gas or coal gasification, but with CO 2 capture and storage—is being described as having low or zero carbon emissions. Carbon dioxide emissions, including emissions from developing, processing, and transporting the fuels, are shown in orange.
The rapidly growing space industry may have a greater climate effect than the aviation industry and undo repair to the protective ozone layer if left unregulated, according to a new study led by UCL and published in the journal Earth’s Future as an open-access paper. Effect of rocket launch and re-entry emissions on global climate forcing.
million cars, according to a new study by an international team led by researchers from The University of Queensland and The University of Canterbury. Their study appears in Global Change Biology. By uprooting carbon trapped in soil, wild pigs (feral swine), are releasing around 4.9 —UQ’s Dr Christopher O’Bryan.
EIA expects that level of decrease in hydropower generation would lead to an 8% increase in California’s electricity generation from natural gas, a 6% increase in energy-related carbon dioxide (CO 2 ) emissions in the state, and an average 5% increase in wholesale electricity prices throughout the West given the current system configuration.
Due to the rapid economic growth in the study period, China invested a large amount of resources into infrastructure construction for advancing the urban living environment. Of the 841 cities studied, 325 showed significant greening with more than 10% of greening BUAs. billion and the urban population was 4.2
A team at Argonne National Laboratory’s Systems Assessment Center has evaluated the well-to-wheel (WTW) greenhouse gas (GHG) emissions of Fischer–Tropsch (FT) fuels produced via various electrolytic H 2 pathways and CO 2 sources; using various process designs (i.e., Zang et al. —Zang et al. 0c05893.
CO 2 emissions from private jets in Europe increased by nearly a third (31%) between 2005 and 2019, rising faster than commercial aviation emissions, according to a new report from environmental campaign group Transport & Environment (T&E). The report, Private jets: can the super-rich supercharge zero emission aviation?
In a new study, scientists at Argonne National Laboratory highlighted which rare earth elements may be particularly vulnerable to disruptions such as mine shutdowns. —Allison Bennett Irion, study co-author and chair of Argonne’s Advanced Supply Chain Analytics initiative. Riddle et al.
A tax on frequent flying could generate revenues needed to deeply decarbonize aviation through midcentury while concentrating the cost burden on those who fly the most, according to a new study from the International Council on Clean Transportation. degree C cap on global temperature. degree C cap on global temperature.
A new study from the International Council on Clean Transportation (ICCT) has found that although liquid-hydrogen- (LH 2 )-combustion aircraft do not perform as well as their jet fuel counterparts, they can still play an important role in meeting aviation’s 2050 climate goals. Mukhopadhaya and Rutherford (2022).
Emissions from these backup generators can harm local residents, regional air quality and the global climate. M.Cubed’s study highlights that many of these generators are in communities that the California Environmental Protection Agency identifies as “disadvantaged,” according to CalEnviroScreen. Source: Bloom Energy.
The results of the Life Cycle Assessment (LCA) of greenhouse gas emissions and primary energy demand of the cars tested by Green NCAP in 2022 show that the current and continuous trend towards larger and heavier cars, significantly increases the negative impact on climate and energy demand.
An economic study by research group Steer, and commissioned by T&E, looked at future operating costs of hydrogen planes on intra-European flights and found that they could be an efficient, cost competitive technology to decarbonize the sector, provided kerosene is taxed adequately. (If GJ—approximately €0.37/L.)
All regions of the world do not—and will not—experience the effects of CO 2 emissions in the same way. A study by University of Chicago economist Esteban Rossi-Hansberg, the Glen A. CO 2 Emissions and Temperature Under the Paris Agreement. Some will suffer greatly from climate change, while others may even benefit.
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