Scientists study the properties of clay to capture carbon dioxide from the air

Inspenet, February 16, 2023

Tuan Ho and Susan Rempe’s team, scientists at Sandia National Laboratories in the United States, are investigating the properties of clays to capture carbon dioxide from the air.

Carbon capture and sequestration is the process of extracting carbon dioxide from the Earth’s atmosphere and storing it underground in order to reduce the effects of climate change.

Clay is an abundant, economical and very stable material. In addition, it has a large surface area, thanks to the fact that it is composed of many microscopic particles that themselves have cracks and crevices, about a hundred thousand times smaller than the diameter of a human hair.

Using powerful computer models and laboratory experiments, Ho and his colleagues have determined how a type of clay can absorb carbon dioxide and store it, with remarkable efficiency.

“Clay is very cheap and abundant in nature. That should allow us to significantly reduce the cost of capturing carbon directly from the air,” Ho argues.

The investigated clay could be used in sponge-like devices to absorb carbon dioxide, and then simply “squeeze” the sponges and pump the extracted carbon dioxide deep underground.

Ho and his colleagues report the technical details of their research in The Journal of Physical Chemistry Letters, under the title “Hydrophobic Nanoconfinement Enhances CO 2 Conversion to H 2 CO 3 .” (Source: NCYT from Amazings)

Amazings NCYT Source:

Photo : Craig Fritz/Sandia National Laboratories. Susan Rempe (left) and Tuan Ho look at an artist’s rendering of the chemical structure of a type of clay.

Don’t miss the Inspenet News at: