Researchers set record for carbon dioxide capture

A new record has been set for carbon dioxide capture and storage. The technology used makes it possible to store, separate, release or protect valuable commodities, enabling companies to develop high value products. 

Using a Metal Organic Frameworks (MOFs) nanocomposite that can be regenerated with remarkable speed and low energy cost, researchers have developed sponge-like technology that can capture carbon dioxide from a number of sources, even directly from air, announced a statement.

The magnetic sponge is used to remove carbon dioxide using the same techniques as induction cooktops using one-third of the energy than any other reported method.

In the study, the researchers designed a unique adsorbent material called M-74 CPT@PTMSP that delivered a record low energy cost of just 1.29 MJ kg-1CO2 , 45 per cent below commercially deployed materials, and the best CCS efficiency recorded, according to the statement.

MOFs are a class of compounds consisting of metal ions that form a crystalline material with the largest surface area of any material known. They are so porous that they can fit the entire surface of a football field in a teaspoon.

“Global concerns on the rising level of greenhouse gas emissions and the associated environmental impact has led to renewed calls for emissions reduction and the development of green and renewable alternative energy sources,” Associate Professor Matthew Hill said.

“Our research shows the lowest reported regeneration energy calculated for any solid porous adsorbent, including monoethanolamine, piperazine and other amines. This makes it a cheap method that can be paired with renewable solar energy to capture excess carbon dioxide from the atmosphere.”

The stability of M-74 CPT@PTMSP was evaluated by estimating the amount of CO2 and H2O captured and released via the researchers’ magnetic induction swing adsorption (MISA) process over 20 consecutive cycles, explained the statement.

The regeneration energy calculated for M-74 CPT@PTMSP is the lowest reported for any solid porous adsorbent. At magnetic fields of 14 and 15 mT, the regeneration energy calculated for M-74 CPT was 1.29 and 1.44 MJ kg CO2-1.

Photo credit: Flickr Creative Commons

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