Chemists capture carbon dioxide from air more efficiently

September 24, 2018 |

In Tennessee, chemists at the U.S. Department of Energy’s Oak Ridge National Laboratory demonstrated a practical, energy-efficient method of capturing carbon dioxide directly from air. If deployed at large scale and coupled to geologic storage, the technique may bolster the portfolio of responses to global climate change.

“Negative emissions technologies—for net removal of greenhouse gases from the atmosphere—are now considered essential for stabilizing the climate,” said Radu Custelcean of ORNL, who conceived and led the study. “Our direct-air-capture approach provides the basis for an energy-sustainable negative emissions technology,” he added.

The accomplishment builds on a proof-of-principle study the chemists conducted last year, which was improved through a two-cycle process that dramatically enhanced the speed and capacity of CO2 absorption and that completely recycles both the amino acid sorbent and the guanidine compound. ORNL’s bench-scale process currently can capture as much as 100 grams of CO2 in 24 hours.

For the next stage, they seek an industrial partner to scale up the process from benchtop demo to pilot plant and, eventually, full-scale industrial plant.

Print Friendly, PDF & Email

Tags: , ,

Category: Research

Thank you for visting the Digest.