1) Disappear 2) Go away 3) Remove chemically 4) Vanish 
(de-sorb´) to remove a substance from the state of absorption or adsorption.
[v] - go away from the surface to which it is adsorbed, of a substance 2. [v] - remove from a surface on which it is adsorbed
desorb To remove (a substance, etc.) from the surface upon which it is adsorbed.
verb go away from the surface to which (a substance) is adsorbed
to remove an absorbate or adsorbate from (an absorbent or adsorbent).