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by oasisbob
4720 days ago
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It's chemically inert [...] so it works as a mechanical filter that adsorbs [...] Because adsorption is a consequence of surface energy and weak bonding, I believe it's considered to be a chemical process, not a mechanical one. |
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Adsorption is due to weak bonds that form between molecules of a surface and a fluid. AFAIK this bond is not a 'new' chemical bond since it does not break / replace existing chemical bonds in both the adsorbed molecule and surface molecules.
Rather, in the case of carbon at least, the 'bonds' are the van der Waals forces.