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MIT CO2 removal device works at any concentration

Carbon dioxide, or CO2, is a greenhouse gas that causes pollution all around the world. Removing pollution from the air is a key area of ​​research around the world. Engineers from MIT have announced that they have developed a new way of removing carbon dioxide from a stream of air.

MIT says that the system can work on almost any concentration level, even as low as 400 parts per million. The fossil fuel-burning power plants.

The team notes that their new method is less energy-intensive and less expensive than other methods. The process is based on passing a stack of charged electrochemical plates. The device is a large, specialized battery that absorbs carbon dioxide from the air or other gas stream.

As it is being discharged, it releases the gas. In operation, the device would alternate between charging and discharging the system. The surface of the electrodes are coated with a compound called polyanthraquinone composited with carbon nanotubes.

When the device is discharged, it can be used for the whole system to operate and ejects a stream of pure carbon. The system operates at room temperature and normal air pressure. The team says that the carbon dioxide can be used by greenhouses or carbonated drink bottling plants. It could also be injected underground for long term storage.

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