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Carbon Sequestration

Environment

EU project to demonstrate 'cheaper, easier' method of CO2 capture

If there’s one big environmental concern surrounding power plants that burn material such as coal in order to produce power, it’s the amount of carbon dioxide that they release into the atmosphere. Various experimental technologies have been developed for removing most or all of the CO2 from smokestack effluents, although no one system appears to have been universally accepted as of yet. One technology that shows some promise, and that could perhaps be used in conjunction with other systems, is called Chemical Looping Combustion (CLC). Norwegian research group SINTEF is now building a special new type of CLC system, for use in the DemoCLOCK pilot project, to be installed at Spain’s Elcogas Puertollano power plant.Read More

Environment

CO2 scrubber turns carbon emissions into building materials

Students at Michigan Technological University have designed and constructed their own mini-smokestack to showcase a new method for scrubbing carbon dioxide from emissions. The approach is similar to SkyMine technology, but instead of producing sodium bicarbonate as a byproduct, it turns captured carbon into a solid material that could have applications as a construction material. Read More

Environment

i-Tree software puts economic value on trees

Trees make a huge contribution to the green infrastructure of our towns and cities, both in carbon sequestration and aesthetics, yet the economical value of them is often forgotten leading them to be undervalued or seen as a nuisance. The i-Tree tool aims to change the way people see trees – it is a freely available software suite from the US Forest Service which provides analysis, benefit-calculations and assessment tools to quantify the contribution made by trees in the urban environment to allow communities to understand the economic benefit of protecting our urban forests. Read More

Environment

The house made of hemp

America's first house made primarily of hemp has been built. Using a product known as Hemcrete – a mix of industrial hemp, lime and water – a team of 40 volunteers, sub-contractors and designers have recently completed construction of the hemp house in Asheville, North Carolina. Eco-friendly design and construction company Push Design has gained the support of community members and local officials alike and now plans to build more of these houses, which offer exceptional strength and longevity, breathability, unsurpassed indoor air quality and two-pronged carbon sequestration attributes. Read More

Architecture

'Living' carbon-negative material could be used to protect buildings

Architects have been looking at ways to improve city buildings with living walls and living roofs that add some much needed greenery and help remove carbon from the atmosphere. Now researchers are looking at using a different sort of “living “ material created from protocells – bubbles of oil in an aqueous fluid sensitive to light or different chemicals – to create a coral-like skin that could be used to clad city buildings, build carbon-negative architecture and even "grow" reefs to stabilize the city of Venice.Read More

Environment

Eggshells could be used to fight global warming

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
Environment

Oil field brine proposed to treat Hungary's red sludge spill

It might sound like fighting fire with fire, but geologist Chen Zhu proposes the application of another industrial waste to the Hungarian bauxite residue spill, with the aim of reducing toxicity via a technique called carbon sequestration. While he says it wouldn't render the residue completely harmless, it would at least minimize the environmental damage. Read More

Good Thinking

'Dry water' could be used to store carbon dioxide

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

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

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

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