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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

Chinese supercomputer still No. 1, ORNL’s Titan No. 2

Posted at 9:00 am November 18, 2013
By John Huotari 2 Comments

Titan Supercomputer at Oak Ridge National Laboratory

Titan at Oak Ridge National Laboratory stayed at No. 2 in a Top 500 ranking of the world’s most powerful supercomputers released Monday morning. (Photo courtesy of ORNL)

A Chinese supercomputer kept its top ranking, and Titan at Oak Ridge National Laboratory stayed at No. 2 in a Top 500 ranking of the world’s most powerful supercomputers released Monday morning.

The top two spots were unchanged from the semiannual rankings released five months ago in June, when Tianhe-2, a supercomputer developed by China’s National University of Defense Technology, bumped Titan from the top spot. The ORNL supercomputer had been named No. 1 one year ago.

The rankings released Monday at the SC13 conference in Denver, Colo., said Tianhe-2 is capable of performing 33.86 petaflops. That’s 33.86 quadrillion calculations per second, on what is known as a Linpack benchmark test.

Titan is a Cray XK7 system that achieved 17.59 petaflops. Titan is one of the most energy-efficient systems on the list, consuming a total of 8.21 megawatts and delivering 2.143 gigaflops per watt, a press release said. [Read more…]

Filed Under: Oak Ridge National Laboratory, Science, Top Stories Tagged With: AICS, Argonne National Laboratory, Austin, BlueGene/Q, China, Computer Science and Mathematics Division, Cray XC30, Cray XK7, CSCS, Europe, Forschungszentrum Juelich, Fujitsu, Germany, IBM BlueGene/Q, Intel Xeon Phi, Jack Dongarra, Japan, JUQEEN, K computer, Kobe, Lawrence Livermore National Laboratory, Leibniz Rechenzentrum, Linpack benchmark, Lugano, Mira, National University of Defense Technology, NVIDIA GPU, Oak Ridge National Laboratory, ORNL, Piz Daint, RIKEN Advanced Institute for Computational Science, SC13, Sequoia, Stampede, supercomputer, SuperMUC, Swiss National Supercomputing Centre, Switzerland, Texas Advanced Computing Center, Thom Mason, Tianhe-2, Titan, Top10, Top500, U.S. Department of Energy, University of Tennessee, University of Texas, Vulcan

Intel funding for UT will develop codes, open computing center at joint UT-ORNL institute

Posted at 6:10 pm October 31, 2013
By University of Tennessee Leave a Comment

Joint Institute for Computational Sciences

The Joint Institute for Computational Sciences at Oak Ridge National Laboratory is pictured above. (Photo courtesy of ORNL)

KNOXVILLE—Imagine going to the doctor and the doctor peering into your genetic code to determine the best medicine to treat what ails you.

The University of Tennessee in Knoxville has received funding from computer chip maker Intel to develop computer codes to make personalized medicine like this and other transformative scientific discoveries possible.

The funding will open an Intel Parallel Computing Center at the Joint Institute for Computational Sciences, or JICS, at UT and Oak Ridge National Laboratory. Parallel computing, used in supercomputers, is a form of computation in which many calculations are carried out simultaneously. The focus of the center will be to take supercomputing to the next level to meet scientific computing demands. Today’s research faces limitations due to the amount of data, time, and energy it takes to run calculations. [Read more…]

Filed Under: College, Education, Oak Ridge National Laboratory, Science, Top Stories Tagged With: Bhanu Rekepalli, biochemical molecules, biotechnology, BLAST, CINECA, computer codes, drug discovery, genomics, Glenn Brook, GROMACS, Intel, Intel Parallel Computing Center, Jeremy Smith, JICS, Jimmy G. Cheek, John Eblen, Joint Institute for Computational Sciences, medicine, National Institute for Computational Sciences, National Science Foundation, Oak Ridge National Laboratory, parallel computing, Purdue University, Roland Schulz, Shane Sawyer, supercomputers, Texas Advanced Computing Center, Tony Mezzacappa, Travis Thompson, University of Tennessee, University of Texas, UT, UT-ORNL Governor's Chair for Molecular Biophysics, Zuse Institut Berlin

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Classifieds

Public Notice: Comment period extended for Draft EA for Lithium Processing Facility at Y-12

EXTENSION OF THE COMMENT PERIOD FOR THE DRAFT ENVIRONMENTAL ASSESSMENT FOR THE LITHIUM PROCESSING … [Read More...]

Public Notice: Draft Environmental Assessment Available for Lithium Production Facility at Y-12

AVAILABILITY OF THE DRAFT ENVIRONMENTAL ASSESSMENT FOR THE LITHIUM PROCESSING FACILITY AT THE Y-12 … [Read More...]

Availability of the Final Environmental Assessment for the Oak Ridge Enhanced Technology and Training Center (ORETTC) (DOE/EA-2144), Finding of No Significant Impact, and Wetland Statement of Findings

The U.S. Department of Energy (DOE) National Nuclear Security Administration (NNSA) announces the … [Read More...]

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