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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.
The study will appear next month in the peer-reviewed journal Climatic Change Letters. The study underscores the complex and sometimes conflicting ways in which fossil fuel burning affects Earth’s climate. —Tom Wigley. Methane is an especially potent greenhouse gas. degree Fahrenheit (less than 0.1 degree Celsius). degrees F (0.1-0.2
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.
Produced water from coal-bed natural gas (CBNG) production may contain sodium bicarbonate (NaHCO 3 ) at concentrations that can harm aquatic life, according to a new study by the US Geological Survey; Montana Fish, Wildlife and Parks; the Bureau of Land Management and the US Environmental Protection Agency.
An Ohio State University team has demonstrated the successful operation of Coal-Direct Chemical Looping (CDCL)—which chemically harnesses coal’s energy and efficiently contains the carbon dioxide produced before it can be released into the atmosphere. Hot iron and coal ash are left behind. 2 millimeters across.
Coal and coal production waste contain a wide variety of valuable rare earth elements that can be converted into clean energy technology components. The US currently has more than 250 billion tons of coal reserves, more than 4 billion tons of waste coal, and about 2 billion tons of coal ash at various sites across the country.
South Africa state-owned power utility Eskom reports that a design study is currently under way for an underground coal gasification (UCG) demonstration plant, which will include a 250,000 Nm 3 /h gas production plant and a 100 MW to 140 MW gas turbine plant. The coal seam lies between 280 m and 300 m deep. Mining Weekly.
Researchers at The Ohio State University have developed a novel process to clean coal mine drainage and extract rare-earth elements from it. Coal mine drainage (CMD) impairs tens of thousands of kilometers of U.S. CMD, coal mine drainage; TEP, trap-extract-precipitate. Miranda et al. —Jeff Bielicki. Miranda, Jeffrey M.
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.
The base results from a study by a team at the Center for Transportation Research, Argonne National Laboratory indicate that shale gas life-cycle greenhouse gas (GHG) emissions are 6% lower than conventional natural gas, 23% lower than gasoline, and 33% lower than coal. Credit: ACS, Burnham et al. Click to enlarge.
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.
A comprehensive three-year scientific study into the air, water and soil impacts of hydraulic fracturing (HF) in coal seam gas (CSG) in Queensland, Australia has found little to no impacts on air quality, soils, groundwater and waterways. Source: CSIRO.
which has developed its own integrated subcritical-water organic-waste power-generation system (ISOP) system, which decomposes organic substances using subcritical-water-treating technology and ultimately produces green energy products such as biofuels. The products can be reused as green energy products such as bio-coal, biogas (e.g.,
A new study of the impact of high EV adoption on the Western US power grid by a team from Pacific Northwest National Laboratory (PNNL) has found that 2028 grid resource adequacy—from generation through transmission—is likely to be sufficient for high EV penetration. Source: PNNL.
A study published in Nature Climate Change suggests that thermoelectric power plants (i.e., nuclear and fossil-fueled generating units) in Europe and the United States are vulnerable to climate change due to the combined impacts of lower summer river flows and higher river water temperatures. Compared to other water use sectors (e.g.
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. water, and non-renewable energies (crude oil, coal.)
Ignite Energy Resources supercritical water process diagram. IER’s proprietary supercritical water technology (SCW) transforms low-ranked coals, including lignite, directly into higher-valued oils and cleaner coal products. tonnes of high-ranked coal. Source: IER. Click to enlarge. Source: IER. Click to enlarge.
Natural gas or coal is used as the energy source of the ammonia industry. is well known that some higher plants can synthesize ammonia or its derivatives directly from air and water at room temperature. To the best of our knowledge, there is no report on artificial synthesis of ammonia direct from air and water.
Australia’s Syngas Limited has engaged Rentech to provide Fischer-Tropsch fuels production preliminary engineering services for Syngas’ proposed commercial scale coal and biomass to liquids (CBTL) fuels facility in Southern Australia, known as the Clinton Project. Additionally, the Clinton coal fluidizes well.
The lab’s flash Joule heating process, introduced several years ago to produce graphene from any solid carbon source ( earlier post ), has now been applied to three sources of rare earth elements—coal fly ash, bauxite residue and electronic waste—to recover rare earth metals. —Deng et al. —James Tour.
gasified coal—by eliminating the coking problem. The resulting lower-temperature SOFCs could provide a cleaner, more efficient alternative to conventional power plants for generating electricity from coal reserves. About half of the carbon dioxide is then recirculated back to gasify the coal to coal gas to continue the process.
Natural gas will play a leading role in reducing greenhouse-gas emissions over the next several decades, largely by replacing older, inefficient coal plants with highly efficient combined-cycle gas generation, according to a major new interim report out from MIT. The first two reports dealt with nuclear power (2003) and coal (2007).
The US Department of Energy has selected 7 projects to participate in the University Coal Research (UCR) program. The projects aim to improve the basic understanding of the chemical and physical processes that govern coal conversion and utilization, by-product utilization, and technological development for advanced energy systems.
The US Department of Energy’s (DOE) Office of Fossil Energy (FE) has selected four projects for cost-shared research and development under the funding opportunity announcement (FOA), DE-FOA-0002180, Design Development and System Integration Design Studies for Coal FIRST Concepts.
The US Department of Energy (DOE) selected eight projects to advance the development of transformational oxy-combustion technologies capable of high-efficiency, low-cost carbon dioxide capture from coal-fired power plants. The Energy Department’s $7 million investment—leveraged with recipient cost-share to support approximately $9.4
million in federal funding to develop conceptual designs of commercially viable technologies that will extract rare earth elements (REEs) from US coal and coal by-product sources. Winner Water Services Inc. The conceptual designs of each project include an option for up to a $2-million feasibility study. Sharon, PA).
The life-cycle water consumption of fuel cell electric vehicles using hydrogen produced from natural gas with steam methane reforming is almost 50% less than the life-cycle water consumption of conventional internal combustion engine vehicles using gasoline, according to a study by researchers at Argonne National Laboratory (ANL).
A new study by Charles J. The Stanford study considered a future US grid where up to 80% of the electricity comes from renewables. What little capacity there is comes from pumped hydroelectric storage, which works by pumping water to a reservoir behind a dam when electricity demand is low. Credit: Barnhart and Benson, 2013.
Overview of the bluegas catalytic coal methanation process. By adding a catalyst to the coal gasification system, GreatPoint Energy is able to reduce the operating temperature in the gasifier, while directly promoting the reactions that yield methane, (CH 4 ). Click to enlarge.
Coal-powered synthetic natural gas (SNG) plants being planned in China would produce seven times more greenhouse gas emissions than conventional natural gas plants, and use up to 100 times the water as shale gas production, according to a new study by Duke University researchers published in the journal Nature Climate Change.
Ceres recently released a new report concluding that coal-to-liquid (CTL) and oil shale technologies face significant environmental and financial obstacles—from water constraints, to technological uncertainties to regulatory and market risks—that pose substantial financial risks for investors involved in such projects.
Resource managers now have a method to determine the source of oil found in the waters off Southern California and differentiate between naturally seeped oils and those produced by offshore oil and gas production. Other platform oils need to go through a more extensive biomarker analysis to distinguish them from natural seepage.
These facilities typically use approximately one ton of coal to produce one BBL of hydrocarbons, with a life cycle CO 2 emissions calculation that is slightly worse than equivalent fuels derived from conventional oil refining. DGF replaces the coal gasification used by others with biomass gasification and natural gas reforming.
Headwaters direct coal liquefaction process. Headwaters Inc and Axens are forming a strategic alliance to provide a single-source solution for producing synthetic fuels by direct coal liquefaction (DCL) alone or in combination with refinery residues or biomass. Up to 50% more liquid product per ton of coal. Source: Headwaters.
A team led by the University of Alberta has confirmed that inorganic mercury (Hg) found worldwide in ocean water is transformed into monomethylmercury (MMHg)—a potent and bio-accumulative neurotoxin—in the seawater. Kirk (2011) Methylation of inorganic mercury in polar marine waters. Fitzgerald and Thomas W.
Researchers at Argonne National Laboratory have analyzed the water consumption for transportation fuels in the United States using an extended lifecycle system boundary that includes the water embedded in intermediate processing steps. Increases in population, energy and food demand now strain previously abundant sources of water.
On a planet aspiring to become carbon neutral, the once-stalwart coal power plant is an emerging anachronism. It is true that, in much of the developing world, coal-fired capacity continues to grow. But in every corner of the globe, political and financial pressures are mounting to bury coal in the past.
If the US military increases its use of alternative jet and naval fuels that can be produced from coal or various renewable resources, including seed oils, waste oils and algae, there will be no direct benefit to the nation’s armed forces, according to a new RAND Corporation study. ” —James Bartis, lead author.
The selected projects are intended to improve the economics of IGCC plants and promote the use of the US’abundant coal resources. For example, a 60%-efficient gasification power plant can cut the formation of carbon dioxide by 40% compared to a typical coal combustion plant, the DOE said.
The participating utilities, Energy Northwest and Utah Associated Municipal Power Systems, have assessed regional strategies for reducing long-term carbon emissions including replacing aging coal-fired units, as well as meeting forecasted energy demand growth, and concluded that SMR technology is a vitally important option.
earlier post ), a new study by a team at Environmental Defense Fund finds that the climate impact of hydropower facilities varies widely throughout the world and over time, with some facilities emitting more greenhouse gases than those burning fossil fuels.
More forms of mercury can be converted to methylmercury—a form of mercury that can be taken into the food chain and eventually can result in mercury-contaminated fish—than previously thought, according to a study led by a team of researchers from Oak Ridge National Laboratory (ORNL) published in Nature Geoscience. Earlier post.).
City center residents who took part in a study were almost twice as likely to suffer from coronary artery calcification (CAC), which can lead to heart disease, than people who lived in less polluted urban and rural areas, according to research published in the May issue of the Journal of Internal Medicine.
In 2018, Lithium Americas completed a pre-feasibility study (PFS) on a two-phase project with a production capacity designed to reach 60,000 tpa of battery- quality lithium carbonate (Li 2 CO 3 ) and 46-year mine life. The sedimentary-clay deposit at Thacker Pass will use similar mining techniques to many coal deposits.
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