◄Previous: 4.2 Ocean fertilisation

# 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 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.

This browser does not support video playback.

Video 2 More proposed CDR methods
Transcript
◄Contents►Next: 5 End-of-session quiz

OpenLearn - Could we control our climate?
Except for third party materials and otherwise, this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence, full copyright detail can be found in the acknowledgements section. Please see full copyright statement for details.