more top stories »

Carbon Sequestration

— Environment

Eggshells could be used to fight global warming

By - October 29, 2010 1 Picture
Carbon capture and sequestration (CCS) is a hot area of research in the effort to fight global warming through the process of removing carbon from the atmosphere and ferreting it away within carbon soaking materials, a team from the University of Calcutta has found an unexpected (or should that be uneggspected) material that could trap carbon from the atmosphere in the form of eggshells. The team has demonstrated that the membrane that lines an eggshell can absorb almost seven times its own weight of carbon dioxide from the atmosphere, allowing the gas to be stored until environmentally friendly methods of disposing, or even using it, can be found. Read More
— Good Thinking

'Dry water' could be used to store carbon dioxide

By - August 25, 2010 1 Picture
You know, I’m pretty sure I remember a Far Side cartoon or something, where someone was selling powdered water – “Just add water!” Well, dry water isn’t quite the same thing. It’s 95 percent liquid water, but that water takes the form of tiny droplets each encased in a tiny globe of silica. The resultant substance is dry and granular. It first came to light in 1968, and was used in cosmetics. More recently, a University of Liverpool research team has been looking into other potential uses for the substance. They have found several, but most interesting is its ability to store gases such as carbon dioxide. Read More
— Environment

Sequestering smokestack carbon into cash

By - June 10, 2010 2 Pictures
Last week, Texas-based Skyonic Corporation was granted a U.S. patent on its SkyMine technology, which is said to remove CO2 from smoke stack emissions by mineralizing it into sodium bicarbonate. That bicarbonate (also known as baking soda) can then be sold for use in glass manufacturing, algae biofuel production, and other areas. Skyonic claims that not only will its process remove carbon and other harmful substances from flue gases, but also that companies using SkyMine will financially profit from the sale of bicarbonates. Read More
— Environment

New materials could soak up carbon emissions

By - June 1, 2010 3 Pictures
Imagine a material that appears to be the size of a sugar cube, but when you unfold it, you discover it has the surface area of a football field. Besides its unbelievable surface area, this substance can also be tweaked to absorb specific molecules. Such materials are called metal-organic frameworks, and could be ideal candidates for filtering the carbon out of smoke stack emissions. With that end in mind, a team of California chemists are now racing to create a metal-organic framework that can be used in an industrial carbon sponge. Because there are millions of possible molecular variations, the team is using development techniques that are up to 100 times faster than conventional methods. Read More
— Environment

Haircare ingredients could hold key to reducing CO2 emissions

By - March 24, 2010 1 Picture
New York-based scientists believe that materials closely resembling ingredients found in hair-conditioning shampoos and fabric softeners might be used to “scrub” carbon dioxide (CO2) from coal-burning emissions. These aminosilicones show potential as a less expensive and more efficient alternative to current technologies with tests resulting in removal of up more than 90 percent of CO2 from simulated flue gas. Read More
— Environment

The next step for carbon sequestration?

By - March 11, 2009 1 Picture
The debate about the benefits of using Carbon Capture and Sequestration (CCS) to fight against climate change is ongoing. One one hand there are reservations regarding suitable sequestration sites that provide sufficient security to store CO2 for centuries as well as the cost of implementing such a system, which could draw important funds away from the development of renewable energy technologies. On the other, we are still heavily reliant on burning fossil fuels to produce energy and this infrastructure can't be replaced overnight. CCS is obviously attractive to existing power generation companies as it allows them to keep hold of their existing infrastructure and for this reason, it is more than likely that CSS schemes will continue to gather momentum. So where to we can CO2 be stored? Scientists at Columbia University’s Earth Institute and the U.S. Geological Survey have produced a new report that maps large rock formations in the United States that can also absorb CO2 and are exploring ways to speed up the CCS process. Read More
— Environment

Carbon Capture: a bridging technology too far?

By - August 7, 2008 4 Pictures
Carbon capture and storage is a climate change mitigation technology characterized by sporadic and unreliable government support and plagued with accusations that it will worsen the environmental disaster it seeks to address. Yet, despite the negative stigma, CCS has been labeled by the IPCC and the Stern Report as an essential measure in reducing the impact of fossil fuels. Gizmag's Kyle Sherer takes a closer look. Read More
— Environment

Experts warn ecosystem changes will continue to worsen

By - March 29, 2005 4 Pictures
March 30, 2005 A landmark study released today reveals that approximately 60 percent of the ecosystem services that support life on Earth -- such as fresh water, capture fisheries, air and water regulation, and the regulation of regional climate, natural hazards and pests -- are being degraded or used unsustainably. Scientists warn that the harmful consequences of this degradation could grow significantly worse in the next 50 years. The Powerpoint presentation of this report makes compelling reading - it should be downloaded by every school, every office and every human being with an interest in seeking positive change. Show it to all those who will listen. It can be downloaded here. Read More

Subscribe to Gizmag's email newsletter