Oak Ridge Today

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

Posted at
By 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…]

ORNL United Way campaign tops $900,000, an increase from 2015

Posted at
By Leave a Comment

ornl-2016-united-way-campaign

Oak Ridge National Laboratory’s United Way campaign’s $900,000 “big check” with, from left, Ann Weaver, whose Facilities Management Division was the top special fundraiser; 2016 chair Sharon Kohler; co-chair Ken Tobin; Facilities and Operations Director Jimmy Stone, directorate challenge winner for large directorates; and David Keim, representing the Office of the Laboratory Director, the challenge winner for smaller directorates. (ORNL photo by Genevieve Martin)

 

The 2016 United Way campaign at the U.S. Department of Energy’s Oak Ridge National Laboratory raised $900,000—an increase of $30,000 over the 2015 campaign.

“This is a fantastic and generous offer of support from our employees, management, volunteers, and everyone who has been associated in one way or another with this year’s United Way effort,” said campaign chair Sharon Kohler.

The $900,000 total included a corporate contribution from UT-Battelle. Kohler credited the lab’s Leadership Givers, who contribute a certain percentage of their salary per pay period, for providing 65 percent of the total designated by staff through payroll deduction. There were 22 new Leadership Givers joining this year. [Read more…]

Scientists seek new physics using ORNL’s intense neutrino source

Posted at
By Leave a Comment

Neutrino Experiment at High Flux Isotope Reactor

The High Flux Isotope Reactor, a U.S. Department of Energy Office of Science User Facility that creates continuous neutron beams, is the site of a new neutrino experiment. Yale-led PROSPECT will probe neutrinos formed as a byproduct of radioactive decay processes. (Image credit: Oak Ridge National Laboratory, DOE/Photographer Genevieve Martin)

 

By Dawn Levy

Soon to be deployed at the U.S. Department of Energy’s Oak Ridge National Laboratory is an experiment to explore new physics associated with neutrinos. The Precision Oscillation and Spectrum Experiment, or PROSPECT, is led by Yale University and includes partners from 14 academic and governmental institutions. The DOE High Energy Physics program will support the experiment at the High Flux Isotope Reactor, or HFIR, a DOE Office of Science User Facility at ORNL. The neutrino, the subject of a 2015 Nobel Prize, remains a poorly understood fundamental particle of the Standard Model of particle physics.

These electrically neutral subatomic particles are made in stars and nuclear reactors as a byproduct of radioactive decay processes. They interact with other matter via the weak force, making their detection difficult. As a result of this elusiveness, neutrinos are the subject of many interesting and challenging detection experiments, including PROSPECT.

“Unique capabilities of ORNL will enable us to broaden the understanding of neutrino properties,” said David Dean, director of ORNL’s Physics Division. “The expansion of neutrino experiments at Oak Ridge National Laboratory is a win for the lab because we have a new scientific focus area, and a win for the scientific community because ORNL has unique neutrino sources that physicists will utilize to explore neutrino science.” [Read more…]