PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Scientists develop CO2 sequestration technique

2013-05-29
(Press-News.org) LIVERMORE, Calif. -- Lawrence Livermore scientists have discovered and demonstrated a new technique to remove and store atmospheric carbon dioxide while generating carbon-negative hydrogen and producing alkalinity, which can be used to offset ocean acidification.

The team demonstrated, at a laboratory scale, a system that uses the acidity normally produced in saline water electrolysis to accelerate silicate mineral dissolution while producing hydrogen fuel and other gases. The resulting electrolyte solution was shown to be significantly elevated in hydroxide concentration that in turn proved strongly absorptive and retentive of atmospheric CO2.

Further, the researchers suggest that the carbonate and bicarbonate produced in the process could be used to mitigate ongoing ocean acidification, similar to how an Alka Seltzer neutralizes excess acid in the stomach.

"We not only found a way to remove and store carbon dioxide from the atmosphere while producing valuable H2, we also suggest that we can help save marine ecosystems with this new technique," said Greg Rau, an LLNL visiting scientist, senior scientist at UC Santa Cruz and lead author of a paper appearing this week (May 27) in the Proceedings of the National Academy of Sciences.

When carbon dioxide is released into the atmosphere, a significant fraction is passively taken up by the ocean forming carbonic acid that makes the ocean more acidic. This acidification has been shown to be harmful to many species of marine life, especially corals and shellfish. By the middle of this century, the globe will likely warm by at least 2 degrees Celsius and the oceans will experience a more than 60 percent increase in acidity relative to pre-industrial levels. The alkaline solution generated by the new process could be added to the ocean to help neutralize this acid and help offset its effects on marine biota. However, further research is needed, the authors said.

"When powered by renewable electricity and consuming globally abundant minerals and saline solutions, such systems at scale might provide a relatively efficient, high-capacity means to consume and store excess atmospheric CO2 as environmentally beneficial seawater bicarbonate or carbonate," Rau said. "But the process also would produce a carbon-negative 'super green' fuel or chemical feedstock in the form of hydrogen."

Most previously described chemical methods of atmospheric carbon dioxide capture and storage are costly, using thermal/mechanical procedures to concentrate molecular CO2 from the air while recycling reagents, a process that is cumbersome, inefficient and expensive.

"Our process avoids most of these issues by not requiring CO2 to be concentrated from air and stored in a molecular form, pointing the way to more cost-effective, environmentally beneficial, and safer air CO2 management with added benefits of renewable hydrogen fuel production and ocean alkalinity addition," Rau said.

The team concluded that further research is needed to determine optimum designs and operating procedures, cost-effectiveness, and the net environmental impact/benefit of electrochemically mediated air CO2 capture and H2 production using base minerals.

###

Other Livermore researchers include Susan Carroll, William Bourcier, Michael Singleton, Megan Smith and Roger Aines.

Founded in 1952, Lawrence Livermore National Laboratory (http://www.llnl.gov) provides solutions to our nation's most important national security challenges through innovative science, engineering and technology. Lawrence Livermore National Laboratory is managed by Lawrence Livermore National Security, LLC for the U.S. Department of Energy's National Nuclear Security Administration.

END



ELSE PRESS RELEASES FROM THIS DATE:

Picking up a second language is predicted by ability to learn patterns

2013-05-29
Some people seem to pick up a second language with relative ease, while others have a much more difficult time. Now, a new study suggests that learning to understand and read a second language may be driven, at least in part, by our ability to pick up on statistical regularities. The study is published in Psychological Science, a journal of the Association for Psychological Science. Some research suggests that learning a second language draws on capacities that are language-specific, while other research suggests that it reflects a more general capacity for learning ...

Small molecule could have big impact on cancer

2013-05-29
Dr. Jung-Mo Ahn, associate professor of chemistry at The University of Texas at Dallas, has designed and synthesized a novel small molecule that might become a large weapon in the fight against prostate cancer. In a study published online May 28 in the journal Nature Communications, Ahn and his colleagues at UT Southwestern Medical Center describe the rational design of the molecule, as well as laboratory tests that show its effectiveness at blocking the cancer-promoting function of proteins called androgen receptors. Androgen receptors are found inside cells and have ...

GOJO presents electronic hand hygiene compliance study at APIC conference

2013-05-29
AKRON, Ohio, (May 28, 2013) – GOJO Industries, a leader in hand hygiene and skin health and inventors of PURELL® Hand Sanitizer, will present its scientific research study, "Impact of Electronic Monitoring and a Hand Hygiene Improvement Program on Compliance Rates" at the Association for Professionals in Infection Control and Epidemiology (APIC) Conference, June 8-10, 2013. Sarah Edmonds, M.S., senior clinical scientist at GOJO lead the study. The research was conducted on two units of an acute care facility in Fort Worth, Texas from June – October 2012 using GOJO SMARTLINKTM ...

Diamonds, nanotubes find common ground in graphene

2013-05-29
What may be the ultimate heat sink is only possible because of yet another astounding capability of graphene. The one-atom-thick form of carbon can act as a go-between that allows vertically aligned carbon nanotubes to grow on nearly anything. That includes diamonds. A diamond film/graphene/nanotube structure was one result of new research carried out by scientists at Rice University and the Honda Research Institute USA, reported today in Nature's online journal Scientific Reports. The heart of the research is the revelation that when graphene is used as a middleman, ...

Simple 'frailty' test predicts death, hospitalization for kidney dialysis patients

2013-05-29
Johns Hopkins scientists report that a 10-minute test for "frailty" first designed to predict whether the elderly can withstand surgery and other physical stress could be useful in assessing the increased risk of death and frequent hospitalization among kidney dialysis patients of any age. In a study described in the Journal of the American Geriatrics Society and published online yesterday, the Johns Hopkins investigators said dialysis patients deemed frail by the simple assessment were more than twice as likely to die within three years, and much more likely to be hospitalized ...

Disabled patients who can't afford their meds come to the ER more

2013-05-29
WASHINGTON — Disabled Medicare patients under the age of 65 who don't take their prescription medications because of cost concerns are more likely to have at least one emergency department visit during a one-year period. The results of a new study are published online today in Annals of Emergency Medicine ("The Relationship Between Emergency Department Use and Cost-Related Medication Nonadherence Among Medicare Beneficiaries"). "Poverty and disability increase the risk that patients don't take their medicine because of the cost, which can lead to avoidable hospitalizations," ...

Women donate less to charity than men in some contexts

2013-05-29
Given the chance, women are more likely than men to dodge an opportunity to donate to charity, a group of economists have found. The issue of which gender is more generous has been debated for years. A new field experiment conducted by scholars at the University of Chicago and University of California, Berkeley shows that when it's easy to avoid making a donation, such as not responding to a door-to-door solicitor, women are less likely than men to give. The results of the study are published in the article, "The Importance of Being Marginal: Gender Differences in Generosity," ...

Changing gut bacteria through diet affects brain function, UCLA study shows

2013-05-29
UCLA researchers now have the first evidence that bacteria ingested in food can affect brain function in humans. In an early proof-of-concept study of healthy women, they found that women who regularly consumed beneficial bacteria known as probiotics through yogurt showed altered brain function, both while in a resting state and in response to an emotion-recognition task. The study, conducted by scientists with UCLA's Gail and Gerald Oppenheimer Family Center for Neurobiology of Stress and the Ahmanson–Lovelace Brain Mapping Center at UCLA, appears in the June edition ...

Penn-led research maps historic sea-level change on the New Jersey coastline

2013-05-29
Hurricane Sandy caught the public and policymakers off guard when it hit the United States' Atlantic Coast last fall. Because much of the storm's devastation was wrought by flooding in the aftermath, researchers have been paying attention to how climate change and sea-level rise may have played a role in the disaster and how those factors may impact the shoreline in the future. A new study led by the University of Pennsylvania's Benjamin P. Horton, an associate professor in the Department of Earth and Environmental Science, relied upon fossil records of marshland to reconstruct ...

OHSU scientists advance understanding of brain receptor; may help fight neurological disorders

2013-05-29
PORTLAND, Ore. — For several years, the pharmaceutical industry has tried to develop drugs that target a specific neurotransmitter receptor in the brain, the NMDA receptor. This receptor is present on almost every neuron in the human brain and is involved in learning and memory. NMDA receptors also have been implicated in several neurological and psychiatric conditions such as Alzheimer's disease, Parkinson's disease, schizophrenia and depression. But drug companies have had little success developing clinically effective drugs that target this receptor. Now, researchers ...

LAST 30 PRESS RELEASES:

New strategies to enhance chiral optical signals unveiled

Cambridge research uncovers powerful virtual reality treatment for speech anxiety

2025 Gut Microbiota for Health World Summit to spotlight groundbreaking research

International survey finds that support for climate interventions is tied to being hopeful and worried about climate change

Cambridge scientist launches free VR platform that eliminates the fear of public speaking

Open-Source AI matches top proprietary model in solving tough medical cases

Good fences make good neighbors (with carnivores)

NRG Oncology trial supports radiotherapy alone following radical hysterectomy should remain the standard of care for early-stage, intermediate-risk cervical cancer

Introducing our new cohort of AGA Future Leaders

Sharks are dying at alarming rates, mostly due to fishing. Retention bans may help

Engineering excellence: Engineers with ONR ties elected to renowned scientific academy

New CRISPR-based diagnostic test detects pathogens in blood without amplification

Immunotherapy may boost KRAS-targeted therapy in pancreatic cancer

Growing solar: Optimizing agrivoltaic systems for crops and clean energy

Scientists discover how to reactivate cancer’s molecular “kill switch”

YouTube influencers: gaming’s best friend or worst enemy?

uOttawa scientists use light to unlock secret of atoms

NJIT mathematician to help map Earth's last frontier with Navy grant

NASA atmospheric wave-studying mission releases data from first 3,000 orbits

‘Microlightning’ in water droplets may have sparked life on Earth

Smoke from wildland-urban interface fires more deadly than remote wildfires

What’s your body really worth? New AI model reveals your true biological age from 5 drops of blood

Protein accidentally lassos itself, helping explain unusual refolding behavior

With bird flu in raw milk, many in U.S. still do not know risks of consuming it

University of Minnesota research team awarded $3.8 million grant to develop cell therapy to combat Alzheimer’s disease

UConn uncovers new clue on what is leading to neurodegenerative diseases like Alzheimer’s and ALS

Resuscitation in out-of-hospital cardiac arrest – it’s how quickly it is done, rather than who does it

A closer look at biomolecular ‘silly putty’

Oxytocin system of breastfeeding affected in mothers with postnatal depression

Liquid metal-enabled synergetic cooling and charging: a leap forward for electric vehicles

[Press-News.org] Scientists develop CO2 sequestration technique