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Gary Edwards

Conventional fuels from concentrated sunlight | Discover | University of Minnesota - 0 views

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    "Simulated sun, authentic opportunity" At the University's Solar Energy Laboratory, the process begins with an indoor solar simulator in the form of seven mirrored, 6,500-watt lamps that concentrate the light on a 10-centimeter spot with an irradiance of 3,000 suns. (One "sun" equals 1,000 watts of solar energy falling per square meter of surface.) With this concentrated radiant energy, one can generate temperatures of more than 3,600 F in a chemical reactor. There, carbon dioxide and water are split to form carbon monoxide and hydrogen, the two components of syngas. Davidson, along with mechanical engineering professor Tom Chase and their students, have developed two prototype reactors to split water and CO2. Deploying these technologies in the Earth's sunbelt could yield enough renewable energy to significantly exceed the world's current needs, the researchers say. "More sun falls on Earth in one hour than is consumed globally in a year," Davidson notes. "Harvesting the sun to meet our energy needs is a challenge with a huge payoff." Of course, it's a little more complicated than focusing concentrated sunlight into a reactor filled with carbon dioxide and water. The key to the technology rests with using metal oxides in a reduction/oxidation cycle to reduce the temperature required to split water and carbon dioxide. "Metal oxides allow you to split water and carbon dioxide at temperatures achievable with modern solar concentrating devices," Davidson explains. In the reactor, the metal oxides go through cycles in which they strip oxygen alternately from carbon dioxide or water-forming carbon monoxide or hydrogen, respectively-then release the oxygen as a byproduct. The syngas formed from the carbon monoxide and hydrogen can be converted into gasoline, diesel, jet fuel, methane (natural gas), or other products. Davidson and her colleagues have produced syngas this way in their laboratory. They have moved from bench top experiments to demonstration in proto
Gary Edwards

Startup turns carbon dioxide into fuels - 0 views

  • The research has received funding from the Air Force Office of Scientific Research (AFSOR), the National Science Foundation and the Department of Energy (DOE). The collaboration between Liquid Light and the University was supported by the DOE Small Business Innovation Research program and the AFOSR Small Business Technology Transfer program. Princeton's agreement with Liquid Light allowed the company to continue to collaborate with Bocarsly and his research team. Before long, new discoveries were emerging. "They started noticing interesting chemistry that we wouldn't have predicted," said Bocarsly.
  • The Princeton scientists did some additional studies, and made a surprising discovery: They could turn CO2, which contains only one carbon, into a compound with a carbon-carbon bond, which vastly increases the possibilities for creating commercial applications. This was radical because although the reaction is certainly possible, it is highly unlikely to happen because so many other competing reactions are occurring. "Everyone who electrochemically reduces CO2 today makes compounds with only one carbon," said Bocarsly. "Nobody makes things with carbon-carbon bonds." He paused. "But we can." "That was a very 'wow' moment," recalled Cole, "because we thought that our process could only make methanol. But now we were finding that we could make a variety of products, and that is what makes this technology commercially interesting." She said Liquid Light scientists can now make more than 20 different products from CO2.
  • One of the chemicals Liquid Light can make is isopropanol, commonly known as rubbing alcohol and an important industrial chemical. Another is butanol, which could be commercially important as a fuel. Liquid Light's technology offers the potential to make these chemicals at lower cost than today's methods, which involve starting with fossil fuels such as petroleum and natural gas.
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  • Why does pyridinium work so well as a catalyst for the reaction? Based on its structure, the ring-shaped molecule is an unlikely catalyst for this reaction because it shuttles just one electron at a time. But to convert CO2 to methanol requires six electrons, and to make higher-carbon molecules takes even more electrons. Bocarsly and his team — in collaboration with Steven Bernasek, professor of chemistry — are doing studies to understand the steps in the chemical reaction, and they are making rapid progress. "There are clearly some intermediate products formed during the reaction that do not sit around for a long time and are not there in very high concentrations," said Bocarsly.
  • The Princeton team also is studying the factors that determine which products can be made from CO2. The researchers have found that very subtle changes in the electrode surface can lead to production of different chemicals. For example, CO2 plus a pyridinium catalyst and a platinum electrode make methanol. However, the same catalyst and a different electrode give a different product. The team published its findings on how the reaction is affected by catalyst concentration, temperature and pressure in the journal ChemSusChem last year.
  • Citing government statistics that the United States generates about 5.5 billion metric tons of CO2 per year, Teamey said it will not be hard to obtain the starting materials for this new industry. However, the CO2 needs to be relatively pure, a requirement that rules out gasoline tailpipes and coal-fired power plants. Instead, said Teamey, the CO2 could come from manufacturing facilities, such as fertilizer manufacturers and cement plants, which according to Teamey emit some 100 million tons of high-purity CO2 each year.
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    "Today, carbon dioxide (CO2) is a hot topic. Scientists around the globe are searching for ways to store, dispose of, or prevent the formation of the greenhouse gas, which is a major driver of global climate change. Liquid Light hopes to take this concept one step further and harness waste CO2 as a source of carbon to make industrial chemicals and fuels. The technology behind the process is simple: Take CO2 and mix it in a water-filled chamber with an electrode and a catalyst. The ensuing chemical reaction converts CO2 into a new molecule, methanol, which can be used as a fuel, an industrial solvent or a starting material for the manufacture of other chemicals. Liquid Light's founders include Bocarsly and his former graduate student Emily Cole, who earned her Ph.D. from Princeton in 2009. Cole helped revive efforts in Bocarsly's lab to study the conversion of CO2 into usable fuels, which led to the launch of Liquid Light and an ongoing collaboration that Bocarsly said has been extremely positive for his research team at the University. "We've made some discoveries that wouldn't have been made in a university setting, and this has really accelerated the research," Bocarsly said. "It is a very productive relationship." Back in the 1990s, a former Ph.D. student of Bocarsly's named Chao Lin conducted some of the earliest experiments on turning CO2 into methanol. He used palladium metal as the electrode and pyridinium, an inexpensive ring-shaped molecule, as the catalyst. By plugging the electrode into an electrical outlet, he could drive an electrochemical reaction that converted CO2 into methanol. As Bocarsly recalled, Lin was quite excited about his success. However, said Bocarsly, "We published that finding in 1994 and there was approximately zero interest in it." The work languished until 2005 when Cole, then a new graduate student, told Bocarsly she wanted to work on a clean-energy project. She took up the challenge of reproducing Lin's results, but this time
Paul Merrell

Global carbon dioxide levels break 400ppm milestone | Environment | The Guardian - 0 views

  • Record carbon dioxide (CO2) concentrations in the atmosphere were reported worldwide in March, in what scientists said marked a significant milestone for global warming. Figures released by the US science agency Noaa on Wednesday show that for the first time since records began, the parts per million (ppm) of CO2 in the atmosphere were over 400 globally for a month. The measure is the key indicator of the amount of planet-warming gases man is putting into the atmosphere at record rates, and the current concentrations are unprecedented in millions of years. The new global record follows the breaking of the 400ppm CO2 threshold in some local areas in 2012 and 2013, and comes nearly three decades after what is considered the ‘safe’ level of 350ppm was passed.
  • “Reaching 400ppm as a global average is a significant milestone,” said Pieter Tans, lead scientist on Noaa’s greenhouse gas network. “This marks the fact that humans burning fossil fuels have caused global carbon dioxide concentrations to rise more than 120ppm since pre-industrial times,” added Tans. “Half of that rise has occurred since 1980.”
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    Combustion as an energy source has to end.
Joseph Skues

Arctic Ice in Death Spiral - Yahoo! News - 0 views

  • dangerously upsetting the energy balance of the entire planet,
  • the Arctic summer sea ice cover is in a death spiral. It's not going to recover," he said.
  • ecause
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  • emendous amounts of extra heat are added every summer to the region as more than 2.5 million square kilometres of the Arctic Ocean have been opened up to the heat of the 24-hour summer sun
  • takes much longer to re-freeze
  • emits huge volumes of additional heat energy into the atmosphere
  • srupting the weather patterns of the northern hemisp
  • Paradoxically, a warmer Arctic means "future cold and snowy winters will be the rule rather than the exception
  • Overland told IPS.
  • average temperatures are now three to five degrees C warmer than they were 30 years ago
  • nderway is a rapid warming of the coastal regions of the Arcti
  • f the global average temperature increases from the present 0.8 C to two degrees C, as seems likely
  • possibly eight degrees due to a series of processes and feedbacks called Arctic amplification.
  • half of the world's permafrost will likely thaw,
  • depth of a few metres,
  • eleasing most of the carbon and methane accumulated ther
  • aid Vladimir Romanovsky of the University of Alaska in Fairbanks and a world expert on permafrost.
  • 25 times more potent than carbon dioxide (CO2).
  • Methane is
  • catastrophic for human civilisatio
  • spans 13 million square kilometres of the land in Alaska, Canada, Siberia and parts of Europe
  • contains at least twice as much carbon as is currently present in the atmosphere –
  • hree times more carbon than all of the worlds' forests contain.
  • consistently across the entire region since the 1980s,
  • southernmost permafrost limit had retreated 130 kilometres over the past 50 years in Quebec’s James Bay region.
  • r by the undersea permafrost that acts as a cap over unknown quantities of methane hydrates (a type of frozen methane) along the Arctic Ocean shelf, he said.
  • eight million tonnes of methane emissions are bubbling to the surface from the shallow East Siberian Arctic shelf every year
  • If just one percent of the Arctic undersea methane reaches the atmosphere, it could quadruple the amount of methane currently in the atmosphere.
  • releasing huge amounts of global warming gases.
  • ould rapidly accelerate in a few decad
  • we could lose much of the permafros
  • because of rapid feedbacks.
  • Present pledges by governments to reduce emissions will still result in a global average temperature increase of 3.5 to 3.9 C by 2100,
  • Arctic that's 10 to 16 degrees C warme
  • asing most of the permafrost carbon and methane and unknown quantities of methane hydrates.
  • climate scientists are calling for a rapid phaseout of fossil fuels
  • still a 50-percent probability of exceeding two degrees C
  • decline three per cent per year
  • the emissions peak is delayed until 2025
  • rctic will be eight to 10 degrees warmer and the world will lose most its permafrost.
  • emperatures will rise three degrees
  • has the potential to eliminate burning coal and oil to generate electric
  • governments have the political will to fully embrace green technologies.
Gary Edwards

UK Government Proposed Chemtrails/Geoengineering as Early as 1970-With U.N. Approval | ... - 0 views

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    "Parliamentary records confirm that the British government considered using cirrus clouds as a means of climate modification as early as 1970. In those days, climatologists thought that the climate was cooling and sought ways to warm it. Geoffrey Johnson Smith MP said: 'to counteract the cooling effect of atmospheric dust the more jets there are in the atmosphere emitting heat-producing carbon dioxide the better, but some scientists, not all, hold the view that jet contrails-vapour trails as we usually call them-because they can lead to the extensive formation of cirrus clouds, could increase the cloud cover and thus effectively cut off the sun's rays and reduce the earth's temperature'.1 The military already had secret devices for creating contrails as early as the 1950s, as the National Archives at Kew reveal. One document is called 'Artificial Contrail Generator'. It includes information on 'Artificial vapour trails: contrail suppression equipment; vapour trails from Hunter aircraft at 50,000ft as seen from the ground, and from another aircraft flying at 8,000ft'.2 Think about it. Fake contrails could be made at altitudes as low as 8,000 ft. Disturbingly, the contrail generators were tested at the UK's biochemical warfare laboratory, Porton Down, which sprayed chemicals on the British public intermittently from 1940 to 1979 in 'trials'.3"
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    Nice catch by marbux. Very detailed and referenced explanation of the where and why behind chemtrails. Chemical analysis shows heavy concentrations of ionized nano sized particles of aluminium, barium, and fluoride.
Gary Edwards

An Inconvenient Truth: Liberal Climate Inquisition Can't Explain Past Temperature Changes - 0 views

  • For instance, the chart above shows reconstructed average world temperature data for the past 500,000 years. Depending on the magnification and size of your monitor, each pencil dot would span something on the order of 1,000 years. The myriad 10-degree Celsius temperature flips all happened before man-made carbon dioxide could have had any impact—the final temperature spike started at the end of the last ice age.
  • Now see if you can follow this: The “science thought police” insist that even though none of the temperature variations for the first 499,950 years had anything to do with human activity, virtually none of the temperature increases of the past 50 years had anything to do with nature. Got it?
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    "In the week prior to the administration signing what should constitute an international climate treaty, one think tank, the Competitive Enterprise Institute, was subpoenaed for casting doubt on the agreement's associated science of climate catastrophe. As disturbing as such thuggery from state attorneys general would be in any case, the premise of the subpoena is faulty. The Competitive Enterprise Institute did not cast doubt on the dubious climate science. The actual data cast the doubt. The think tank and others have simply pointed out what the data show. It looks like thoughtcrime has now moved from George Orwell's novel "1984" to the twisted reality of our judicial system. Pointing out facts should never be a real crime. The Heritage Foundation's new Paris-bubble-popping science summary is also a case of letting the numbers tell a story. A story many never hear in the media-hyped spectacle that is international climate policy."
Paul Merrell

French Tycoon on Trial for Massive Fraud: I Gave Netanyahu 1 Million Euros for Election... - 0 views

  • PARIS - Arnaud Mimran, the main suspect in the great theft dubbed “the sting operation of the century,” testified on Thursday at a Paris court that he funded expenses of Prime Minister Benjamin Netanyahu in France, as well as directly funding election campaign expenses amounting to one million Euros. Netnahyahu vehemently denied the report. According to the law governing campaign contributions and instructions issued by the state comptroller, a Knesset candidate is entitled to accept donations from any individual totaling no more than 11,480 shekels ($2,970). In elections for leadership of a party or in internal party primaries, in which there are more than 50,000 voters, a candidate can accept individual donations of up to 45,880 shekels ($11,870). Mimran is suspected of stealing at least 282 million euros from the French Finance Ministry through a deception involving the rolling over value-added tax in deals relating to carbon dioxide capping. The focus of the court discussion on Thursday was to determine whether senior figures have succeeded until now in protecting Mimran from being indicted. In this context, Mimran’s close relations with Benjamin Netanyahu came up.
  • A joint investigation by Haaretz and the French website Mediapart, published last month, showed that Mimran financed vacations for Netanyahu and his family in the Alps and on the French Riviera. Mimran also lent Netanyahu his apartment in the 16th arrondissement in Paris,  taking him to a prestigious nightclub during Netanyahu’s  visit to Paris. Arnaud’s name features prominently in the list of foreign donors that was compiled by Netanyahu on the eve of his return to power, as published by journalist Raviv Drucker on Channel 10 News. In addition to these expenses, Mimran has now testified that he signed a cheque for financing an earlier Netanyahu election campaign, in 2001, as far as he remembers.  “I financed him to the tune of about one million euros,” he said. Mimran’s declaration came while he was being questioned on the witness stand about the extent of his expenses. His testimony revealed that most of his assets are not registered in his name. He explained to the judge: “The Rolls Royce is in my wife’s name, the McLaren is in my sister’s name. Only the Ferrari and Maserati are registered in my name.” This playing innocent caused quite a furor in the courtroom.
Paul Merrell

Koch-funded climate change skeptic reverses course - latimes.com - 0 views

  • The verdict is in: Global warming is occurring and emissions of greenhouse gases caused by human activity are the main cause. This, according to Richard A. Muller, professor of physics at UC Berkeley, MacArthur Fellow and co-founder of the Berkeley Earth Surface Temperature project. Never mind that the United Nations Intergovernmental Panel on Climate Change and hundreds of other climatologists around the world came to such conclusions years ago. The difference now is the source: Muller is a long-standing, colorful critic of prevailing climate science, and the Berkeley project was heavily funded by the Charles Koch Charitable Foundation, which, along with its libertarian petrochemical billionaire founder Charles G. Koch, has a considerable history of backing groups that deny climate change. 
  • In an opinion piece in Saturday’s New York Times titled “The Conversion of a Climate-Change Skeptic,” Muller writes: “Three years ago I identified problems in previous climate studies that, in my mind, threw doubt on the very existence of global warming. Last year, following an intensive research effort involving a dozen scientists, I concluded that global warming was real and that the prior estimates of the rate of warming were correct. I’m now going a step further: Humans are almost entirely the cause.”
  • Muller’s New York Times commentary follows research he did last year that confirmed the work of scientists who found the Earth’s temperature was rising. In the past, Muller had criticized which global temperatures were used in such research, contending that some monitoring stations provided inaccurate data.  Now, Berkeley’s research has weighed in on the causes of the temperature rise, testing arguments climate contrarians have used. “What has caused the gradual but systematic rise of two and a half degrees?” Muller writes. “We tried fitting the shape to simple math functions (exponentials, polynomials), to solar activity and even to rising functions like world population. By far the best match was to the record of atmospheric carbon dioxide, measured from atmospheric samples and air trapped in polar ice.”
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