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ORNL: Crystallization method offers new option for carbon capture from air

Posted at 12:22 pm January 9, 2017
By Oak Ridge Today Staff Leave a Comment

carbon_dioxide_direct_air_capture2-custelcean

Using X-ray diffraction, ORNL’s Radu Custelcean analyzed the molecular structure of the simple guanidine compound and was surprised to find carbonate, a crystal that forms when carbon dioxide from air reacts with water. (Image credit: ORNL/Genevieve Martin)

 

By Sara Shoemaker, Oak Ridge National Laboratory

Scientists at the U.S. Department of Energy’s Oak Ridge National Laboratory have found a simple, reliable process to capture carbon dioxide directly from ambient air, offering a new option for carbon capture and storage strategies to combat global warming.

Ambient air is air that completely surrounds.

Initially, the ORNL team was studying methods to remove environmental contaminants such as sulfate, chromate, or phosphate from water. To remove those negatively charged ions, the researchers synthesized a simple compound known as guanidine designed to bind strongly to the contaminants and form insoluble crystals that are easily separated from water.

In the process, they discovered a method to capture and release carbon dioxide that requires minimal energy and chemical input. Their results are published in the journal Angewandte Chemie International Edition. [Read more…]

Filed Under: Front Page News, Oak Ridge National Laboratory, Top Stories, U.S. Department of Energy Tagged With: Angewandte Chemie International Edition, carbon capture, carbon dioxide, carbon dioxide capture, carbonate, Charles Seipp, CO2 Capture from Ambient Air by Crystallization with a Guanidine Sorbent, direct air capture, Genevieve Martin, global warming, greenhouse gas, guanidine, Michelle Kidder, Neil Williams, Oak Ridge National Laboratory, ORNL, Radu Custelcean, Sara Shoemaker, Spallation Neutron Source, U.S. Department of Energy, University of Tennessee, University of Texas, x-ray diffraction

Former energy secretary compares global warming path to Russian roulette, with gun pointed at knee

Posted at 8:04 pm February 17, 2014
By John Huotari Leave a Comment

Steven Chu on Global Warming at Oak Ridge National Laboratory

During a lecture at Oak Ridge National Laboratory, former Energy Secretary Steven Chu compares global warming to Russian roulette, but with the gun pointed at a kneecap.

Former Energy Secretary Steven Chu sounded an alarm about global warming during a visit to Oak Ridge last week, comparing the current path to Russian roulette, but with the gun pointed at a knee—and with more bullets added each decade.

“Every decade you put in a bullet and you pull the trigger,” said Chu, a Stanford University professor who won a Nobel Prize in physics in 1997. “After four or five more decades, it could be fully loaded.”

The longest-serving secretary of the U.S. Department of Energy, Chu gave a lecture at Oak Ridge National Laboratory on Wednesday.

The globe is warming, and we might not feel the full effect of the greenhouse gases emitted by humans for another half-century or more, after the ocean has been warmed, Chu said.

“We’re going to glide to a temperature that we’re not really sure about, but I can guarantee that it’s warmer than it is today because of that ocean,” Chu said. “The damage that we’ve done today will not be seen for at least 50 years.” [Read more…]

Filed Under: Oak Ridge National Laboratory, Science, Slider, Top Stories, Weather, Weather Tagged With: Alaska, batteries, carbon capture, carbon sequestration, carbon tax, emissions, Energy Secretary, energy use, global warming, greenhouse gases, Greenland, ice masses, Nobel Prize, Oak Ridge National Laboratory, physics, Russian roulette, Stanford University, Steven Chu, temperature increase, U.S. Department of Energy

Alexander unveils his four principles for clean, cheap, reliable energy

Posted at 6:08 pm May 29, 2013
By Oak Ridge Today Staff Leave a Comment

U.S. Senator Lamar Alexander

Lamar Alexander

It’s been five years since U.S. Sen. Lamar Alexander called for a new Manhattan Project for energy independence, and during a Wednesday update, the senator said four “grand principles” should guide America’s energy policy.

The senator said his principles—which include research and development, free market forces, and cheaper, clean energy—would “end an obsession with taxpayer subsidies and strategies for expensive energy.” They would instead focus on “doubling research and allowing marketplace solutions to create an abundance of clean, cheap, reliable energy,” Alexander said during a Wednesday afternoon speech at the Tennessee Valley Corridor Summit in Oak Ridge.

The senator called for doubling research funding and ending long-term subsidies for “big oil” and “big wind.” [Read more…]

Filed Under: Anderson County, Business, East Tennessee Technology Park, Federal, Government, National Nuclear Security Administration, Oak Ridge, Oak Ridge Associated Universities, Oak Ridge National Laboratory, Oak Ridge Office, Office of Scientific and Technical Information, Roane County, Top Stories, U.S. Department of Energy, Y-12 National Security Complex Tagged With: advanced biofuels, ARPA-E, cap-and-trade, carbon capture, clean energy, electric vehicles, energy independence, Energy Innovation Hubs, energy policy, free market, fusion, Germany, grand principles, green buildings, Lamar Alexander, Manhattan Project, New Hope Center, nuclear waste, renewable energy, Republican, research and development, solar power, subsidies, Tennessee Valley Corridor Summit, U.S. Department of Energy, wind power, Y-12 National Security Complex

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Public Notice: NNSA announces no significant impact of Y-12 Development Organization operations at Horizon Center

AVAILABILITY OF THE FINAL ENVIRONMENTAL ASSESSMENT FOR THE OFFSITE HOUSING OF THE Y-12 DEVELOPMENT … [Read More...]

ADFAC seeks contractors for five homes

Aid to Distressed Families of Appalachian Counties (ADFAC) is a non-profit community based agency, … [Read More...]

Public notice: Draft environmental assessment for Y-12 Development Organization at Horizon Center

AVAILABILITY OF THE DRAFT ENVIRONMENTAL ASSESSMENT FOR THE OFFSITE HOUSING OF THE Y-12 DEVELOPMENT … [Read More...]

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