Skip to main content

About this free course

Download this course

Share this free course

Could we control our climate?
Could we control our climate?

Start this free course now. Just create an account and sign in. Enrol and complete the course for a free statement of participation or digital badge if available.

4.3 Other possibilities

A further suggested method using the biosphere is to plant trees, then prevent them from decomposing by turning them into charcoal or biochar (Figure 12). This has a co-benefit of improving soil quality.

The technological equivalent uses artificial trees and other direct air capture (DAC) methods (Figure 12) to ‘scrub’ CO2 from the air with chemical methods; the CO2 can then be sequestered with CCS.

Figure 12 shows a photograph of 2 hands holding a pile of black charcoal pellets. Figure 12 shows a photograph of an array of large fans in a desert region making up a DAC plant. The arrays are stacked in long rows 4 high. A car is shown for scale, it's length is approximately twice the diameter of a fan.
Figure 12 Low-tech and high-tech methods of CDR. (a) A handful of biochar. (b) An example design of a DAC plant by Carbon Engineering.

Watch the video below to learn of some other suggested methods for carbon dioxide removal.

Download this video clip.Video player: Video 2 More proposed CDR methods
Copy this transcript to the clipboard
Print this transcript
Show transcript|Hide transcript
Video 2 More proposed CDR methods
Interactive feature not available in single page view (see it in standard view).