Process for removing one or more components from a mixture of gases and vapors by passing it upward and usually countercurrent to and in immediate contact with a stream of descending liquid, the latter being chosen so as to dissolve the desired components and not others. The gas or vapor may be broken into fine bubbles upon entering a tower filled with liquid, but more frequently the tower is filled with coke, broken stone, or other packing, over which the liquid flows while exposing a relatively large surface to the rising gas or vapor.
[Hawley's Condensed Chemical Dictionary]

Still, I wonder if there is a word translating abattre as opposed to laver which, TTBOMK, corresponds to scrubbing, potentially a more sophisticated process ...

I mean, if I have an "empty" spray can, i.e. one no longer containing my favourite hair spray or wall-tagging paint, and decide to empty it of its gas, I could hold the nozzle under stream of tap water or in a bucket of water. This might constitute abattage without being as sophisticated as "scrubbing".