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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). SwRI developed the technology for the California Air Resources Board (CARB). and Rao, S.
A new study by a team from Environmental Health & Engineering (EH&E) has found that greenhouse gasemissions 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.
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 gasemissions over their whole life cycle. However, urban environmental design often neglects life cycle GHG emissions.
“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.
Komatsu and its mining customers Rio Tinto, BHP, Codelco and Boliden have formed the Komatsu Greenhouse Gas (GHG) Alliance. The formation of the alliance brings together mining leaders willing to share time, resources and information to deliver zero-emissions equipment solutions.
There is no immediate concern for copper resources, but the average ore grade is declining as higher grade deposits become exhausted. The NWIS comprises mostly gas-fired generation and has a GHG emission factor of 620 g CO 2 -e kWh -1. Production in a lower emission region would significantly decrease the GHG emission intensity.
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. 2021.105762. 2021.105762.
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
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
With clean hydrogen gaining recognition worldwide as a carbon-free fuel capable of making a significant contribution to addressing climate change, Southern California Gas Co. SoCalGas) will field test a new technology that can simultaneously separate and compress hydrogen from a blend of hydrogen and natural gas.
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.
Austria-based OMV, an international, integrated oil, gas and chemicals company, announced its intention to become a net-zero (Scope 1, 2 and 3) company by no later than 2050. OMV’s plan foresees emission reduction targets of 30% in operations (Scope 1 & 2) and a 20% reduction target in the product portfolio (Scope 3) for 2030.
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 gasemissions 85%, and reach carbon neutrality by 2045.
Canada-based Aurora Hydrogen, a company developing emission-free hydrogen production technology, has raised $10 million in Series A funding led by Energy Innovation Capital. And, unlike electrolysis, the process does not require water as a feedstock, preserving another critical and scarce resource.
The Advanced Clean Trucks (ACT) rule requires the sale of at least 30% zero-emission trucks by 2030; the HDV Omnibus rule requires a 90% reduction in NO x emissions from Model Year 2027 engines; and the California Phase 2 greenhouse gas rule sets standards to improve the efficiency of tractor-trailers.
ClearFlame anticipates its engine running on ethanol can reduce GHG vehicle emissions by more than 45% and offer an estimated 15-30% TCO savings when compared with a diesel-fueled solution. ClearFlame uses soot-free “Clear” Exhaust Gas Recirculation (EGR) to maintain this ratio under varying load conditions. Blumreiter, J., Johnson, B.,
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.
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)
The trade associations Natural Gas Vehicles for America (NGVAmerica) and Coalition for Renewable Natural Gas (RNG Coalition) announced that 64% of all on-road fuel used in natural gas vehicles in the US in calendar year 2021 was renewable natural gas (RNG). gCO 2 e/MJ for calendar year 2021.
Other includes landfill gas, biomass, and other gas. Reciprocating engines tend to be smaller than other types of natural gas-fired electricity generators and account for a relatively small share of power plants fueled by natural gas. MW natural gas-fired engines for a total plant capacity of 225 MW.
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.
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.
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. The test cycle was made up of five repeats of the EQUA cycle, totalling 741 km.
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.
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. Calcination is an energy-intensive process, for which the current predominant fuel is natural gas. Rio Tinto will conduct a $1.2-million
The California Air Resources Board on Friday approved the Innovative Clean Transit regulation (ICT) ( earlier post )—a first-of-its-kind regulation in the US that sets a statewide goal for public transit agencies to gradually transition to 100% zero-emission bus (ZEB) fleets by 2040. Transit agencies are expected to save $1.5
The California Air Resources Board will launch a new pilot program that aims to help small trucking fleets make the transition to zero-emission technologies. The pilot will provide $25 million to implement a range of innovative solutions to help small fleets make the transition to zero-emissions.
The California Air Resources Board has approved the first three Community Emissions Reduction Programs (CERP) within the South Coast Air Quality Management District (SCAQMD) under Assembly Bill 617. Oil and gas operations. East Los Angeles, Boyle Heights, West Commerce. San Bernardino, Muscoy. Residential energy use.
a pioneer in natural gas decarbonization, recently raised $11.5 When renewable natural gas is used as the feedstock, C-Zero’s technology can even be carbon negative, effectively extracting carbon dioxide from the atmosphere and permanently storing it in the form of high-density solid carbon. Resources. C-Zero Inc., Srilatha, D.
In addition to coal mining, other major sources of methane emissions globally include wetlands, agriculture, and oil and gas facilities. Methane emissions are a constant concern at coal mines, which vent the gas as it is emitted when coal seams are disturbed. We can’t just take coal out of the equation.
South San Francisco Scavenger Company (SSFSC) has submitted an application to the California Air Resources Board (ARB) seeking certification of Tier 2 pathways for biomethane (Bio-CNG) from anaerobic digestion (AD) of food waste and urban landscaping waste at their facility in South San Francisco, California. gCO 2 e/MJ and 0.28
CARB funding will be allocated towards the purchase of on-road zero-emission Class 8 trucks. CEC funding will support zero-emission vehicle infrastructure and installation, and workforce training and development. Other costs associated with administrative and data collection tasks will be supported by either CARB or CEC.
liter, heavy-duty opposed-piston, three-cylinder diesel engine it developed in a project funded by the California Air Resources Board (CARB) and several partners ( earlier post ) has entered fleet service with WALMART Corporation in a Peterbilt 579 tractor. Achates Power announced that the 10.6-liter,
Although large emissions cuts are urgently needed to achieve global climate goals, it may take decades before we can measure the effect of the reductions on global temperature evolution, according to a new study by researchers at Norway’s CICERO Center for International Climate Research. Samset, Jan S. Fuglestvedt and Marianne T.
The ORNL team conducted engine experiments with both 91 RON E10 gasoline and liquified petroleum gas (LPG). 1) with cooled exhaust gas recirculation (EGR) and high compression ratio (13.3:1 Recently the California Air Resources Board (CARB) has announced its intention to reduce U.S. higher H/C ratio) than gasoline.
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 gasemissions than previously estimated by the US Postal Service (USPS). An all-electric fleet would reduce lifetime greenhouse gasemissions by 14.7 Earlier post.).
With these new buses, Twin Rivers is now operating the largest zero-emission school bus fleet in North America, with 40 all-electric school buses in its fleet. The 10 LionC buses are part of California Climate Investments, a statewide initiative that puts billions of cap-and-trade dollars to work reducing greenhouse gasemissions.
all while demonstrating exceptional drivability, quiet operation, and zero harmful emissions. This is an important step in the transition to emissions-free heavy-duty trucks. Toyota’s Environmental Challenge 2050 aims to almost completely eliminate CO 2 emissions from vehicles, operations and the supply chain by 2050.
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.
As part the trials, Teijin and Fujitsu will leverage a blockchain-based commercial platform launched in July 2022 to promote the sustainable use of recycled materials, tracing and management of greenhouse gas (GHG) emissions within the environmentally-conscious bicycle industry. Earlier post.)
The internally funded advancement successfully reduced heavy-duty diesel engine nitrogen oxide (NO x ) emissions to meet the California Air Resources Board (CARB) 2027 standards. Today’s diesel engines use selective catalytic reduction (SCR) to abate NO x emissions. DEF—a 32.5 g/hp-hr standard. —Wheeler et al.
The company is one of the first wholesalers to utilize the technology and comes as the California Air Resources Board (CARB) announced plans in January to impose zero-emission requirements on TRUs sold or operated in California by 31 December 2029.
If current policy and technology trends continue, global energy consumption and energy-related carbon dioxide emissions will increase through 2050 as a result of population and economic growth. Oil and natural gas production will continue to grow, mainly to support increasing energy consumption in developing Asian economies.
The results of a new analysis by the International Council on Clean Transportation (ICCT) show that, when combined with a trend toward higher methane leakage and combustion slip, there is no climate benefit from using liquefied natural gas (LNG) as a marine fuel—regardless of the engine technology. First, it contains very little sulfur.
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