| Gas (597) |  |
| Inert gas (5) | |
| Methane (169) | |
| Shale gas (9) | |
"If you found things like water, oxygen, CO, methane, in the right amounts, that would be a strong hint of life.
The resulting methane gas is processed then removing all carbon dioxide and impurities to make Renewable Natural gas (RNG).
Anheuser-busch Columbus brewery provides an organic by-product to quasar for conversion to methane gas. f you can buy renewable fuel at $1. 95 per gallon
The device uses a thumbnail-sized quantum cascade laser (QCL) as well as tuning forks that cost no more than a dime to detect very small amounts of nitrous oxide and methane.
and industrial processes are increasing the amount of nitrous oxide in the atmosphere. he warming impact of methane
For these reasons, methane and nitrous oxide detection is crucial to environmental considerations. QUARTZ TUNING FORK The small QCL has only become available in recent years,
The unit can detect the presence of methane or nitrous oxide in just a second he says.
but they had the unfortunate side effect of capturing the desired methane as well and they are far too expensive to make for this application.
The device uses a thumbnail-sized quantum cascade laser (QCL) as well as tuning forks that cost no more than a dime to detect very small amounts of nitrous oxide and methane.
and industrial processes are increasing the amount of nitrous oxide in the atmosphere. he warming impact of methane
For these reasons, methane and nitrous oxide detection is crucial to environmental considerations. QUARTZ TUNING FORK The small QCL has only become available in recent years,
The unit can detect the presence of methane or nitrous oxide in just a second he says.
This allowed the astronomers to rule out cloud-free atmospheres made of water vapor methane nitrogen carbon monoxide or carbon dioxide.
They also explain that while methane, ethane, propane and butane gasses are released in the process,
There is wide agreement among scientists that emissions of heat-trapping greenhouse gases such as methane and carbon dioxide are driving climate change.
That is the conversion of waste n this case both locally sourced food waste and human sewage nto a methane-rich biogas.
which to react methane and hydrogen. Nickel usually catalyses the formation of thick layers of graphite.
the researchers found genes from microbes that metabolize sulphur compounds and some that produce methane.#
Over time, methane was produced, showing that the microbes were living and growing. Lever is convinced that the microbes are not hitchhikers from the surface,
The giant craters are similar in size to seafloor pockmarks created by methane gas explosions. However
That been a high hurdle for devices called solid oxide fuel cells (SOFCS) that convert fuelsuch as methane and hydrogenirectly to electricity without burning them.
#Martian methane sniffer adapted for Earth WHAT'S that gassy smell? The hypersensitive methane detector on NASA's Mars rover curiosity is being repurposed to ferret out gas leaks On earth.
The Pacific gas and electric company in San francisco and global energy giant Chevron are testing a handheld earthbound version that is 1000 times as sensitive as existing methane sniffers.
The device looks like a funky golf club with a laser at the end says PG&E spokesperson Hailey Wilson.
When it picks up trace amounts of methane it kind of sings to the operator and changes pitch depending on the concentration.
We could also use other sensors to assess methane outgassing levels and explosion risk. Initially the firm plans to use information collected by European space agency satellites
It will carry five scientific instruments including a methane sensor to try to pick up the gas in Mars's atmosphere.
On earth methane is produced mainly by life so there was a stir when Earth-based instruments and a European probe detected traces of it in Mars's atmosphere a decade ago.
Some are sceptical of those results believing they were triggered by methane in Earth's atmosphere
or perhaps water in Mars's and recently NASA's Curiosity rover added to the scepticism by finding no methane when it breathed in the Martian air.
Methane, the primary constituent of natural gas, is a greenhouse gas 25 times more potent than carbon dioxide.
while producing small amounts of burnable methane, have gained popularity in the last few decades but such systems only function under specific circumstances,
a laboratory usually devoted to studying fuel cellshe kind that run on methane or hydrogened by Shriram Ramanathan, Associate professor of Materials science at the Harvard School of engineering and Applied sciences (SEAS.
during the last step, bacteria produce primarily carbon dioxide and methane gas. The Biffa plant separates the methane from the carbon dioxide,
then uses the resulting biomethane just like natural gas mined from the ground to produce electricity.
The Mars Curiosity rover, for instance, has detected methane on the surface of Mars, as well as other chemical signatures suggesting the possibility of past or present life.
as well as spikes of methane. It has also roved into an ancient streambed where liquid once flowed,
They're made from a carbon seed placed in a microwave chamber with methane or another carbon-containing gas and superheated into a glowing plasma ball.
A research team has created an artificial leaf that produces methane, the primary component of natural gas, using a combination of semiconducting nanowires and bacteria.
and bioplastics (derived from renewable biomass sources such as corn or biogas methane). As part of a"cradle-to-cradle"approach, the researchers will explore the fate of these materials
and bioplastics (derived from renewable biomass sources such as corn or biogas methane). As part of a"cradle-to-cradle"approach, the researchers will explore the fate of these materials
Peidong Yang, a professor of chemistry at Berkeley and co-director of the school's Kavli Energy Nanosciences Institute, leads a team that has created an artificial leaf that produces methane
An alternative fuel could be liquefied natural gas such as super-cold liquid methane; when stored as a liquid it needs far less space than gas. f a market for small business jets existed,
This technique flows a mixture of methane, hydrogen and argon gases into a tube furnace.
At high temperatures, methane decomposes into carbon atoms that settle onto the germanium's surface to form a uniform graphene sheet.
Faiad discovered a cheap and plentiful catalyst called aluminisilicate that drastically reduces the cost of converting plastic waste into gases like methane and propane,
Synthesis of graphene via chemical vapour deposition (CVD) of methane gas onto a copper substrate is the most common way of producing the quantity
In this process, the researchers start with methane, which adsorbs to the germanium surface and decomposes to form various hydrocarbons.
when it explored dramatically slowing the growth rate of the graphene crystals by decreasing the amount of methane in the chemical vapor deposition chamber.
This technique flows a mixture of methane, hydrogen, and argon gases into a tube furnace.
At high temperatures, methane decomposes into carbon atoms that settle onto the germanium's surface to form a uniform graphene sheet.
In this process, the researchers start with methane, which adsorbs to the germanium surface and decomposes to form various hydrocarbons.
when it explored dramatically slowing the growth rate of the graphene crystals by decreasing the amount of methane in the chemical vapor deposition chamber.
Scientists have developed a simple process to treat waste coffee grounds to allow them to store methane Scientists have developed a simple process to treat waste coffee grounds to allow them to store methane.
Scientists have developed a simple process to treat waste coffee grounds to allow them to store methane London,
Methane capture and storage provides a double environmental return-it removes a harmful greenhouse gas from the atmosphere that can then be used as a fuel that is cleaner than other fossil fuels.
if we can use this for methane storage?'"'"he continues. The absorbency of coffee grounds may be the key to successful activation of the material for carbon capture."
Activated carbon derived from waste coffee grounds for stable methane storage About Institute of Physics The Institute of Physics is a leading scientific society.
This flexibility gives these MOFS a high capacity for storing methane, which in turn has the potential to help make the driving range of an adsorbed-natural-gas (ANG) car comparable to that of a typical gasoline-powered car."
"Long is the corresponding author of a Nature paper that describes this work entitled,"Methane storage in flexible metal-organic frameworks with intrinsic thermal management."
ANG has the potential to store high densities of methane within a porous material at ambient temperature and moderate pressures
Mason and their colleagues is stepped a"adsorption and desorption of methane gas.""Most porous materials that would be used as adsorbents exhibit classical Langmuir-type isotherm adsorption,
where the amount of methane adsorbed increases continuously but with a decreasing slope as the pressure is raised so that,
upon discharging the methane down to the minimum delivery pressure, much of it remains in the tank,
This means the amount of methane that can be delivered to the engine, i e.,, the usable capacity, is higher than for traditional, non-flexible adsorbents."
when methane is delivered to accelerate the vehicle.""Crystallites that experience higher external pressures will have a greater free energy change associated with the phase transition
Combined gas adsorption and in situ powder X-ray diffraction experiments performed under various pressures of methane at 25°C (77°F) showed that there is minimal adsorption of methane by the cobalt-bpd MOF at low pressures,
When the methane pressure decreased to between 10 bar and 5 bar the framework fully converted back to the collapsed phase,
pushing out all of the adsorbed methane gas. Long says that it should be possible to design MOF adsorbents of methane with even stronger gas binding sites and higher energy phase transitions for next generation ANG vehicles.
He and his group are working on this now and are also investigating whether the strategy can be applied to hydrogen,
the researchers flowed methane through a tube furnace at 1, 000 degrees C over a copper foil that catalyzed its decomposition into carbon and hydrogen.
and also shows the strongest methane signature ever detected on an alien planet, which should yield additional clues as to how the planet formed.
whereas others are around 700 C and features the strongest atmospheric methane signal on record.
Previous Jupiter-like exoplanets have shown only faint traces of methane, far different from the heavy methane atmospheres of the gas giants in our solar system.
"In the atmospheres of the cold giant planets of our solar system carbon is found as methane,
Since the atmosphere of 51 Eridani is also methane rich, it signifies that this planet is well on its way to becoming a cousin of our own familiar Jupiter,
This technique flows a mixture of methane, hydrogen and argon gases into a tube furnace.
At high temperatures, methane decomposes into carbon atoms that settle onto the germanium's surface to form a uniform graphene sheet.
This technique flows a mixture of methane, hydrogen, and argon gases into a tube furnace.
At high temperatures, methane decomposes into carbon atoms that settle onto the germanium's surface to form a uniform graphene sheet.
#A better way to pack natural gas into fuel tanks A new and innovative way to store methane could speed the development of natural gas-powered cars that don require the high pressures
. most of them trucks and buses. But until manufacturers can find a way to pack more methane into a tank at lower pressures and temperatures,
UC Berkeley chemists have developed now a porous and flexible material so-called metal-organic framework (MOF) or storing methane that addresses these problems.
when the methane is extracted to run the engine, but expands when the methane is pumped in at only moderate pressure,
within the range produced by a home compressor. ou could potentially fill up at home, said Jeffrey Long,
The flexible MOF can be loaded with methane the main ingredient of natural gas, at 35 to 65 times atmospheric pressure (500 to 900 psi),
Next-gen NG vehicles Long said that next-generation natural gas vehicles will require a material that binds the methane and packs it more densely into the fuel tank, providing a larger driving range.
One of the major problems has been finding a material that absorbs the methane at a relatively low pressure,
is that they do not heat up as much as other methane absorbers, so there is less cooling of the fuel required. f you fill a tank that has adsorbent, such as activated charcoal,
when the methane binds it releases heat, he said. ith our material, some of that heat goes into changing the structure of the material,
The flexible MOF material could perhaps even be placed inside a balloon-like bag that stretches to accommodate the expanding MOF as methane is pumped in
however, a study by UC Berkeley Berend Smit found that rigid MOFS have limited a capacity to store methane.
when methane is pumped in and out. The flexible MOFS they tested are based on cobalt and iron atoms dispersed throughout the structure, with links of benzenedipyrazolate (bdp).
and accounts for a significant portion of U s. methane emissions. Landfills are the third largest source of methane in the United states. Furthermore,
experts have projected that reducing food losses by just 15 percent would provide enough food for more than 25 million Americans every year,
By reducing wasted food in landfills, we cut harmful methane emissions that fuel climate change, conserve our natural resources,
production of methane emissions and odors) make necessary to search for other waste management routes. It is highlighted the thermal treatment through pyrolysis for large scale production of biochar
Synthesis of graphene via chemical vapour deposition (CVD) of methane gas onto a copper substrate is the most common way of producing the quantity
Peidong Yang, a professor of chemistry at Berkeley and co-director of the school's Kavli Energy Nanosciences Institute, leads a team that has created an artificial leaf that produces methane, the primary component of natural gas
a professor of chemistry at Berkeley and co-director of the school's Kavli Energy Nanosciences Institute, leads a team that has created an artificial leaf that produces methane,
Alexanderalus via Wikimedia, CC BY-SA 3. 0in this process scientists start with methane, which adsorbs to the germanium surface
when they were exploring dramatically slowing the growth rate of the graphene crystals by decreasing the amount of methane in the chemical vapour deposition chamber.
#Carbonate rocks are unrecognized methane sink Since the first undersea methane seep was discovered 30 years ago scientists have analyzed meticulously
and measured how microbes in the seafloor sediments consume the greenhouse gas methane as part of understanding how the Earth works.
The sediment-based microbes form an important methane sink preventing much of the chemical from reaching the atmosphere
and contributing to greenhouse gas accumulation. As a byproduct of this process the microbes create a type of rock known as authigenic carbonate
which while interesting to scientists was thought not to be involved in the processing of methane. That is no longer the case.
A team of scientists has discovered that these authigenic carbonate rocks also contain vast amounts of active microbes that take up methane.
This goes to show how the global methane process is still rather poorly understood Thurber added.
Methane-derived carbonates represent a large volume within many seep systems and finding active methane-consuming archaea and bacteria in the interior of these carbonate rocks extends the known habitat for methane-consuming microorganisms beyond the relatively thin layer of sediment that may overlay a carbonate mound said Marlow
a geobiology graduate student in the lab of Victoria Orphan of Caltech. These assemblages are also found in the Gulf of mexico as well as off Chile New zealand Africa Europe
because the rock-based microbes potentially may consume a huge amount of methane. The microbes were less active than those found in the sediment
Studies have found that approximately 3-6 percent of the methane in the atmosphere is from marine sources
--and this number is so low due to microbes in the ocean sediments consuming some 60-90 percent of the methane that would otherwise escape.
Now those ratios will have to be reexamined to determine how much of the methane sink can be attributed to microbes in rocks versus those in sediments.
We found that these carbonate rocks located in areas of active methane seeps are themselves more active Thurber said.
when methane becomes available. In some ways these rocks are like armies waiting in the wings to be needed called upon
when to absorb methane. The ocean contains vast amounts of methane which has long been a concern to scientists.
Marine reservoirs of methane are estimated to total more than 455 gigatons and may be as much as 10000 gigatons carbon in methane.
A gigaton is approximate 1. 1 billion tons. By contrast all of the planet's gas and oil deposits are thought to total about 200-300 gigatons of carbon.
Story Source: The above story is provided based on materials by Oregon State university y
#Tool enhances social inclusion for people with autism The University of Alicante has developed together with centres in the UK Spain
Bacteria decompose the mixture and produce among others the energy-rich gas of methane. It is used then for the gas stoves in the kitchen of the hospital.
methane Rice university scientists have created a highly sensitive portable sensor to test the air for the most damaging greenhouse gases.
and laser pioneer Frank Tittel and his group uses a thumbnail-sized quantum cascade laser (QCL) as well as tuning forks that cost no more than a dime to detect very small amounts of nitrous oxide and methane.
and found it capable of detecting trace amounts of methane, 13 parts per billion by volume (ppbv),
"Methane and nitrous oxide are both significant greenhouse gases emitted from human activities, "Tittel said.""Methane is emitted by natural sources, such as wetlands,
and human activities, such as leakage from natural gas systems and the raising of livestock.""Human activities such as agriculture, fossil fuel combustion, wastewater management and industrial processes are increasing the amount of nitrous oxide in the atmosphere.
The warming impact of methane and nitrous oxide is more than 20 and 300 times, respectively, greater compared to the most prevalent greenhouse gas, carbon dioxide over a 100-year period.
For these reasons, methane and nitrous oxide detection is crucial to environmental considerations.""The small QCL has only become available in recent years,
"The unit can detect the presence of methane or nitrous oxide in as little as a second, he said.
Environmental concerns posed by fracking like the release of methane and groundwater contamination have escalated with the advent of the natural gas boom in the U s. The huge amount of water used in fracking has become a particularly touchy subject in drought-ridden areas where some 55 percent of the wells fracked
Palm oil-105g Soybean-103g Rapeseed-95g Sunflower-86g Palm oil with methane capture-83g Wheat (process fuel not specified)- 64g Wheat (as process fuel natural gas used in CHP)- 47g
They measured for chemicals that are hazardous to breathe, like nitrogen dioxide, nitric oxide, ozone, carbon monoxide, carbon dioxide, methane, black carbon, particulate matter,
and producing additional methane, a more potent greenhouse gas over the short term (20 years). However, the call is still a major step forward to decarbonization because, for the first time,
The cars spent 750 hours of drive time gathering 150 million data points on nitrogen dioxide (NO2), nitric oxide (NO), ozone (O3), carbon monoxide, carbon dioxide, methane, black carbon
he unintentionally let a copper foil heat for longer than usual before exposing it to methane vapor,
He later discovered that two leaky valves were letting in trace amounts of methane into the experiment chamber."
"The valves were letting in just the right amount of methane for graphene to grow,
so that carbon atoms in methane gas brushing the surface are inclined more to form large flakes of graphene.
"With an'e-gas'-or synthetic methane-being made on an industrial scale already, and projects dedicated to getting'e-ethanol Audi'e-diesel'and Audi'e-benzin'on the market in the coming years,
#Flexible methane production from electricity and biomass The variable operation modes were the biggest challenge during development says Project Head Siegfried Bajohr of the Engler-Bunte Institute (EBI) of KIT.
From the products of a biomass gasification plant i e. hydrogen carbon dioxide and carbon monoxide the Demosng pilot plant directly produces methane and water by means of a nickel catalyst (SNG operation.
As conventional methanation processes reach their limits at this point we have developed a new reactor concept Bajohr says.
and transporting it in our gas grids in the form of methane Thomas Kolb Head of the Engler-Bunte Institute of KIT emphasizes.
Methanation has the advantage that the infrastructure existing for the distribution and storage of natural gas and the standard appliances can be used further without any modifications
Via an effective methanation wind and solar power can be fed into the natural gas grid without any limitations.
and stored in the form of methane. Thanks to the newly developed honeycomb catalyst also smaller and medium-sized plants can be operated efficiently y
Greenhouse gases released by farming, such as methane from livestock and rice paddies, and nitrous oxides from fertilizers and other soil treatments rose 13 percent after 1990, the study concluded.
and decomposing waste produce a lot of methane. They produce so much methane, and eat so much fertilized feed,
that livestock are blamed for two-thirds of agriculture climate pollution every year. ee seeing an expansion of agricultural lands in some areas because of the growing global population,
and drove a precise sampling pattern for more than eight hours just above a natural methane seep.
Natural methane seeps play an important but poorly understood role in the ocean ecosystem. The organisms that depend on methane from the seeps play a substantial role
not only in the marine food web but also in altering the quantity of methane released to the ocean surface and, potentially, in the overall chemistry of the ocean.
Scientists lack a clear understanding of how sedentary or slow-moving animals move between the widely separated seeps,
virtually no methane emissions In addition to a near elimination of greenhouse gases associated with its growth, SUSIBA2 rice produces substantially more grains for a richer food source.
but it also the one of the largest manmade sources of atmospheric methane, a potent greenhouse gas.
Now, with the addition of a single gene, rice can be cultivated to emit virtually no methane from its paddies during growth.
With their warm, waterlogged soils, rice paddies contribute up to 17 percent of global methane emissions, the equivalent of about 100 million tons each year.
methane is about 20 times more effective at trapping heat. SUSIBA2 rice, as the new strain is dubbed,
low-methane rice that could offer a significant and sustainable solution. Researchers created SUSIBA2 rice by introducing a single gene from barley into common rice
resulting in a plant that can better feed its grains, stems and leaves while starving off methane-producing microbes in the soil.
and with colleagues at China Fujian Academy of Agricultural sciences and Hunan Agricultural University. he need to increase starch content and lower methane emissions from rice production is recognized widely
resulting in even more methane emissions. It an issue that must be addressed. uring photosynthesis, carbon dioxide is absorbed
and convert it to methane. Researchers introduced SUSIBA2 into a common variety of rice and tested its performance against a non-modified version of the same strain.
Over three years of field studies in China, researchers consistently demonstrated that SUSIBA2 delivered increased crop yields and a near elimination of methane emissions f
< Back - Next >
Overtext Web Module V3.0 Alpha
Copyright Semantic-Knowledge, 1994-2011