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The Department of Energy even expressed its ambitions to supercharge fossil fuel mining with a social media post, with a picture of coal captioned “ She is the moment. Some states are taking matters into their own hands, doubling down on their efforts to continue combating greenhouse gas emissions.
The study doesn’t try to declare a tax policy utopia; it skips the moralizing and dives into the mechanics of who wins and who loses if we make this swap. And if you’re wondering how political leanings play into this, the answer surprised me initially, but after thinking about it for 0.5 seconds, not so much.
The amount of methane released into the atmosphere as a result of coal mining is likely approximately 50% higher than previously estimated, according to research presented at the recent annual meeting of the American Geophysical Union. The study is one of the first to account for methane leaking from old, abandoned mines.
A multi-Hubbert analysis of coal production by Tadeusz Patzek at The University of Texas at Austin and Gregory Croft at the University of California, Berkeley concludes that the global peak of coal production from existing coalfields will occur close to the year 2011. Gt C (15 Gt CO 2 ) per year, according to the study.
The calculated relative amounts of well-to-wheels emissions of greenhouse gases from eight different energy sources are shown in the table below. These results indicate that coal and oil are the energy sources leading to most emissions, and that hydro, wind, and nuclear are the energy sources leading to least emissions.
The study will appear next month in the peer-reviewed journal Climatic Change Letters. The study will appear next month in the peer-reviewed journal Climatic Change Letters. Relying more on natural gas would reduce emissions of carbon dioxide, but it would do little to help solve the climate problem. —Tom Wigley.
The calculated relative amounts of well-to-wheels emissions of greenhouse gases from eight different energy sources are shown in the table below. These results indicate that coal and oil are the energy sources leading to most emissions, and that hydro, wind, and nuclear are the energy sources leading to least emissions.
Fuel-cycle SO 2 emissions of EVs compared to those of gasoline ICEVs and HEVs in China, current (left) and future (right). The study was published online 24 May in the ACS journal Environmental Science & Technology. and NO x emissions. Credit: ACS, Huo et al. Click to enlarge. The power of EVs is electricity from the grid.
“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.
US energy-related CO 2 emissions in 2012 were the lowest since 1994, at 5.3 With the exception of 2010, emissions have declined every year since 2007. The largest drop in emissions in 2012 came from coal, which is used almost exclusively for electricity generation. Duke study.
The US Department of Energy (DOE) intends to provide up to $100 million in awards ( DE-FOA-0002116 ) for the Coal FIRST (Flexible, Innovative, Resilient, Small, and Transformative) initiative (announced in November 2018), which aims to develop coal plants of the future that will provide secure, stable, reliable power with near-zero emissions.
Life-cycle GHG emissions per MJ of fuel produced and combusted for both 100-year and 20-year time horizons. However, the range in values for shale and conventional gas overlap, so there is a statistical uncertainty whether shale gas emissions are actually lower than those of conventional natural gas. Credit: ACS, Burnham et al.
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. Unlike exhaust from burning coal and gas that contains CO 2 , burning hydrogen emits only water vapor and oxygen. Sand et al. —Dr Sand The GWP100 of hydrogen. Sand et al.
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.
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.
A team of researchers in China suggest that, in the context of promoting the use of clean fuel vehicles and increasing vehicle fuel efficiency, CO 2 emissions of China’s urban passenger transport sector could reach a peak of 225 MtCO 2 in 2030. A paper on their study appears in the journal Energy Policy. —Li and Yu.
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
by Michael Sivak, Sivak Applied Research The overall advantage of battery electric over gasoline vehicles, in terms of well-to-wheels emissions of greenhouse gases, has been well documented. However, the emissions of electric vehicles depend greatly on the energy source used to generate the electricity that powers them. Natural gas 87.9
The National Energy Technology Laboratory (NETL) has released a follow-on study to its 2009 evaluation of the economic and environmental performance of Coal-to-Liquids (CTL) and CTL with modest amounts of biomass mixed in (15% by weight) for the production of zero-sulfure diesel fuel. Earlier post.). —White and Gray.
Under current policies, home energy storage systems would also often increase carbon emissions, according to a study by a team of researchers at the University of California San Diego published in the journal Environmental Science & Technology. —Ryan Hanna, postdoc at the School of Global Policy and Strategy.
The least expensive way for the Western US to reduce greenhouse gas emissions enough to help prevent the worst consequences of global warming is to replace coal with renewable and other sources of energy that may include nuclear power, according to a new study by University of California, Berkeley, researchers. Click to enlarge.
A new assessment of the viability of coal-to-liquids (CTL) technology by researchers from the MIT Joint Program on the Science and Policy of Global Change (JPSPGC) found that without climate policy, CTL has the potential to account for around a third of global liquid fuels by 2050. Credit: Chen et al., 2011 Click to enlarge. Henry, J.M.
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. Emission standard. emissions). emissions).
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. note that the focus of their study was motivated in part by the unprecedented rise in popularity of electric two-wheelers in China.
This FOA, issued in August 2017, is a $50-million funding opportunity for projects supporting cost-shared research and development to design, construct, and operate two large-scale pilots to demonstrate transformational coal technologies. Some of these technologies are now ready to proceed to the large-scale pilot stage of development.
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. There was no significant difference in the profiles of total carbonyl emissions between CFT and DF. Jakober, 2008). reduction in total carbonyls and a 6.0–100% 2014.05.025.
Australia-based Woodside has signed an agreement with Japanese companies JERA Inc, Marubeni Corporation and IHI Corporation to undertake a joint study examining the large-scale export of hydrogen as ammonia for use decarbonizing coal-fired power generation in Japan. Green hydrogen is produced from renewable energy using electrolysis.
The Funding Opportunity Announcement ( DE-FOA-0000703 ) for the awards is soliciting applications for R&D in two specific Areas of Interest: laboratory scale liquids production and assessment; and a feasibility study for a coal-biomass to liquids facility. Feasibility Study for a Coal-Biomass to Liquids Facility.
In regions where the share of coal-based electricity is relatively low, EVs can achieve substantial GHG reduction, the team reports in a paper in the ACS journal Environmental Science & Technology. emissions are less important because of the low contribution of light duty vehicles to national PM 10 and PM 2.5
The Congressional bipartisan infrastructure bill includes a proposal for hydrogen-production hubs that could use coal as an energy source. But even such allegedly clean hydrogen could produce high levels of greenhouse-gas emissions, according to a new study published in the journal Energy Science & Engineering.
The study, “Estimating US Government Subsidies to Energy Sources: 2002-2008”, found that fossil fuels benefited from approximately $72 billion over the seven-year period, while subsidies for renewable fuels totaled $29 billion. billion went to traditional sources—such as coal and oil—and $2.3 Of the fossil fuel subsidies, $70.2
A study by Mark Z. However, this research finds that it reduces only a small fraction of carbon emissions, and it usually increases air pollution. Upstream emissions are emissions, including from leaks and combustion, from mining and transporting a fuel such as coal or natural gas.). —Mark Jacobson.
Net emissions resulting from the use of plug-in hybrid electric vehicles (PHEVs) depend on the efficiency of the conventional vehicle fleet; PHEV CD (all-electric, charge-depleting mode) efficiency; charging strategy; battery pack capacity; driving patterns; and generator mix used for charging. Scott Peterson, J. L/100 km) efficiencies.
A Technical Feasibility Study (TFS) for a coal-to-methanol (CTM) plant based on the Arckaringa coal resources in Australia has concluded that CTM could be a viable project capable of augmenting the Bankable Feasibility Study (BFS) for Altona Energy’s Arckaringa Clean Energy CTL (coal-to-liquids) and Power Project in South Australia.
A study lead by researchers from the Institute of Applied Ecology, Chinese Academy of Sciences has found a 1.4-gigatonne gigatonne gap between CO 2 emissions calculated on the basis of the two publicly available official energy data sets from China: one national, the other provincial. The provincial aggregation is the higher figure.)
Using a new methodology, a study published in Proceedings of the National Academy of Sciences (PNAS) has concluded that anthropogenic emissions of methane from agriculture and fossil fuel extraction and processing (i.e., oil and/or natural gas) are likely significantly greater than cited in existing studies. —Miller et al.
For example, states in the western US (WUS) generally produce a larger fraction of their electricity from renewable and/or “emission-free” sources (i.e., coal, oil, natural gas, and biomass). Among the findings: Summer surface ozone (O 3 ) decreases in most locations due to widespread reductions of traffic NO x emissions.
WTW energy demand and GHG emissions for EV and PHEV drivetrains for various electricity sources; gasoline ICE vehicle is solid square, hybrid the hollow square. The study by a team at the Swiss Federal Institute of Technology Zurich, reported in the Journal of Power Sources , is novel in three respects, the researchers said.
BC emission map of China at 0.1° × 0.1° Major emission areas are marked. A new black carbon (BC) emissions inventory from China found BC emissions levels in 2007 of 1,957 Gg BC—higher than reported in earlier studies. for year 2007. Credit: ACS, Wang et al. Click to enlarge. Earlier post.). Click to enlarge.
Runoff from pavement with coal-tar-based sealant is the primary source of toxic polycyclic aromatic hydrocarbons (PAHs) to streambed sediments in Milwaukee, Wisconsin, according to a US Geological Survey and Milwaukee Metropolitan Sewerage District open-access study published in the journal Environmental Toxicology and Chemistry.
The US Department of Energy (DOE) has issued a funding opportunity announcement ( DE-FOA-0000784 ) for up to $13 million to support the development of advanced coal gasification systems. AOI 1: Coal Feed Technologies - Low-rank Coal Feed or Coal-woody Biomass Feed Technologies. poplar, pine and hardwoods]).
A review of 20 years of technical literature on natural gas (NG) emissions in the United States and Canada comprising more than 200 papers has concluded that official inventories consistently underestimate actual CH 4 emissions due to leakage from the natural gas system. Alvarez et al. number of devices).
Efforts to shift away from fossil fuels and replace oil and coal with renewable energy sources can help reduce carbon emissions but do so at the expense of increased inequality, according to a new study by researchers at Portland State University (PSU) and Vanderbilt University. —Julius McGee.
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