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The US laboratory develops a new carbon capture technology using sodium lime – Xinhua



WASHINGTON, January 31 (Xinhua) – American scientists have developed a technique that can eliminate carbon dioxide from carbon energy emissions, as they were inspired by the diving equipment.

The study published on Thursday in Chem magazine showed a kind of solid sorbent as soda used in scuba and water repellents to prevent poisonous accumulation of carbon dioxide gas could be used to treat the carbon-rich combustion gas released by thermal power stations.

This carbon dioxide debugger requires 24 percent less energy than the industrial reference solution, according to researchers at the Oak Ridge National Laboratory (ORNL) under the United States Department of Energy.

The researchers found a class of organic compounds called BIGs that can capture carbon as the smoke gas bubbles through the aqueous BIG solution, which causes carbon dioxide molecules to adhere to the sorbent and crystallize into a species of organic limestone

The limestone can be filtered and heated to 120 degrees Celsius to release carbon dioxide so that it can be stored permanently. The sorbent can be reused.

"The least energy needed for regeneration is expected to significantly reduce the cost of carbon capture, which is critical given that billions of tons of carbon dioxide should be captured each year to achieve a measurable impact on the climate," he said. said lead author Radu Custelcean, scientific researcher at ORNL.

However, the technique has a relatively low carbon capacity and absorption rate at the moment, so the researchers combine with traditional sorbents like amino acids.

"We are also adjusting the process so that it can be applied to the separation of carbon dioxide directly from the atmosphere in an efficient and profitable way," said Custelcean.


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