0
$\begingroup$

Is there a nonliving (wood does not count) substance or process that accretes a solid material by withdrawing carbon from the air, in a manner analogous to calcium carbonate being accreted from seawater in biorock/seacrete?

$\endgroup$
1
  • 1
    $\begingroup$ The alteration of concrete is an example. $\endgroup$
    – Karl
    Commented Sep 25, 2022 at 20:02

1 Answer 1

2
$\begingroup$

There is no carbon in the air. Air contains some carbon dioxide, but carbon is not carbon dioxide. Carbon is a solid stuff. Carbon dioxide is a gas. Carbon dioxide can be removed from air by bubbling in a suspension of (insoluble) calcium carbonate in water. The reaction occurs according to the equation : $$\ce{CaCO3 + CO2 + H2O -> Ca^{2+} + 2 HCO3^-}$$

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.